Holds a Ph.D. in Physics from UFSM (2007). Currently a Full Professor at the Federal University of Rio Grande do Norte (UFRN). Leads the Magnetic and Semiconductor Nanostructures Group (GNMS) and the Laboratory of Physical Properties of Ceramic Materials (LaPFiMC), both at UFRN. Collaborates with the Smart Surfaces Group at the University of Minho (Portugal). Supervises master's and doctoral students in the Graduate Programs in Physics and Materials Science and Engineering at UFRN. Coordinates and participates in national and international research projects. Has expertise in Experimental Physics and ceramic materials, focusing on Magnetic Materials, Magnetic and Electrical Properties, with emphasis on topics such as thermomagnetic effects, magnetization dynamics, magnetic multilayers, FMR, GMI, magnetic thin films, magnetron sputtering, electrical properties of ceramics, and low-damping parameter systems. ResearchID: E-1510-2013. Experience in Supervision: 2 Post-docs, 9 PhD concluded;
RESEARCH, TEACHING, or OTHER INTERESTS
Condensed Matter Physics, Materials Science
166
Scopus Publications
2632
Scholar Citations
27
Scholar h-index
71
Scholar i10-index
Scopus Publications
A Novel Approach to Brewery Effluent Treatment: Adsorption, Electrochemical Oxidation, and in Situ Regeneration for Efficient Nitrogenous Pollutants Removal Romuald Teguia Doumbi, Koutou Allahossem, Djonga Weldi Gnowe, Lys Carelle Motue Waffo, Ebio Nko’o Guillaume, Jean Marie Dikdim Dangwang, Tinda Domga, Benguene Ngobtchok, Eric Noubissié, Guy Bertrand Noumi, Marcio Assolin Correa Water Air and Soil Pollution, 2026 Nitrogenous pollutants from wastewater pose a serious environmental concern and have to be managed by an efficient treatment technique. In this context, the main objective of this study was to remove nitrogenous pollutants (NH 4 + , NO 3 − , and NO 2 − ) from real brewery effluent using an adsorption (AD) process and to regenerate the saturated adsorbent through a direct anodic oxidation (DAO) process. The regeneration aimed at enabling the reuse of the adsorbent for additional applications. The experiments were conducted on brewery effluent sampled in N’Djamena (Chad). Adsorption tests were performed in batch mode by mixing a volume of effluent with a specific amount of activated carbon (AC) prepared from the core shell of Balanites Aegyptiaca . Based on the characterization results, the activated carbon exhibited an amorphous graphitic structure with the main functional groups (O–H, C-O, C = O), and a micro- and mesoporous structure showing a specific surface area of 153 m 2 g −1 . DAO was employed to enhance adsorption efficiency and to regenerate the active sites of the AC that had been previously saturated with pollutants. The maximum adsorption capacities for NH 4 + , NO 3 − , and NO 2 − ions were 40.16, 34.13, and 28.82 mg/g, respectively. The adsorption kinetics followed a pseudo-second-order model. Thermodynamic analysis revealed that the adsorption is endothermic with low enthalpy values (ΔH° = 3.40—9.02 kJ/mol), confirming that the adsorption mechanism is predominantly governed by physisorption involving Van der Waals forces and electrostatic interactions. The regeneration efficiency of saturated activated carbon via the DAO process was 84.29%, 88.57%, and 40.83% for NH 4 + , NO 2 − , and NO 3 − ions, respectively. Based on these findings, coupling AD and DAO processes is a viable method for treating effluents containing nitrogenous pollutants and effectively regenerates AC.
La2O3-Doped ZrO2 Tapes for Enhanced Thermomagnetic Conversion in CoFeB Heterostructures Marcio A. Correa, Nivia L. C. Siqueira, Juliano C. Denardin, Romuald T. Doumbi, Artur de Morais, Rodolfo B. da Silva, Maurício R. D. Bomio, Fabiana V. Motta, Danniel F. de Oliveira, Wilson Acchar, Kaline P. Furlan, Dachamir Hotza Journal of the American Ceramic Society, 2026 This work investigates the thermomagnetic response of La 2 O 3 ‐doped ZrO 2 /CoFeB heterostructures for energy harvesting applications. La 2 O 3 ‐doped ZrO 2 ceramic tapes were fabricated via tape casting, followed by the deposition of CoFeB ferromagnetic thin films using magnetron sputtering. This combined approach enabled the realization of hybrid systems exhibiting enhanced thermoelectric performance driven by the anomalous Nernst effect (ANE). Structural characterization by scanning electron microscopy and X‐ray diffraction confirmed the formation of La 2 O 3 ‐related phases in the ceramic matrix. Surface polishing improved the ceramic–ferromagnet interface, promoting the growth of soft magnetic CoFeB layers. The thermomagnetic response was evaluated by measuring the ANE under varying thermal gradients and external magnetic fields. The heterostructure with 2% La 2 O 3 doping exhibited the highest performance, with an effective coefficient of . These results demonstrate the potential of La 2 O 3 ‐doped ZrO 2 /CoFeB heterostructures for thermomagnetic energy harvesting and highlight the effectiveness of this fabrication route for achieving tunable thermomagnetic responses.
Zero-Field Skyrmions in Confined Pt/Co/Ta Multilayer Nanodisks for Spintronic Devices Yoav Urbina Elgueta, Nicolas Tasso, Simón Oyarzún, Guillermo Herrera, Juan Escrig, Denilson Toneto, Juan Palma, Marcio Correa, Juliano Denardin ACS Applied Nano Materials, 2026 Magnetic skyrmions in heavy-metal/ferromagnet multilayers are promising building blocks for low-power spintronic devices; however, achieving thermally robust and field-free stability at room temperature remains a key challenge. Here, we present a combined experimental and micromagnetic investigation of confined skyrmions in Pt/Co/Ta multilayer nanodisks, with diameters ranging from 200 to 1000 nm, focusing on their switching behavior and numerical layer-resolved topological properties. Using polar magneto-optical Kerr effect, magnetic force microscopy, and micromagnetic simulations based on experimentally determined magnetic parameters, we show that lateral confinement strongly governs magnetization reversal and skyrmion stability. While continuous films exhibit labyrinthine stripe domains due to competing interfacial Dzyaloshinskii–Moriya interaction, exchange, and dipolar energies, nanodisks display pronounced size-dependent behavior: large disks remain multidomain, intermediate sizes favor skyrmion-mediated reversal, and sub-250 nm disks approach single-domain states. Notably, 400 nm nanodisks stabilize isolated Néel-type skyrmions at zero magnetic field and room temperature. Simulations reproduce the experimental hysteresis and reveal that confinement lowers the demagnetizing energy, stabilizing the skyrmion state. Layer-resolved topological analysis further uncovers two distinct remanent three-dimensional skyrmion configurations, selectable via modest fields (∼60 mT), with different chirality profiles and total topological charge. This controllable bistability provides a natural binary encoding scheme and, in a magnetic tunnel junction geometry, would enable nonvolatile memory operation through distinct resistance states.
Microscopic Energy Dissipation and Thermal Response in Magnetic Hyperthermia Provide Complementary Frameworks for Specific Loss Power J. C. R. Araújo, Carlos A. De Moraes Iglesias, Jayson Xavier, Rômulo O. Pinto, Yasir Abbas, Paulo C. Albuquerque, Rodolfo B. Silva, João M. Soares, Davor Lopes Mariano, Magno A. V. Heringer, E. M. Baggio-Saitovitch, Cristiani C. Plá Cid, Suzana N. Medeiros, Marco A. Morales, Edimilson F. Silva, Marcio Assolin Correa, Armando Ferreira, Filipe Vaz, Daniel Munteanu, Juliano C. Denardin, Felipe Bohn ACS Applied Nano Materials, 2026
Magnetoimpedance Effect in Y5Fe3O12/SnTe/Ag and Y5Fe3O12/Ag/Ag heterostructures A. de Morais, J.G.S. Santos, E.C. Souza, J.M.D. Neto, J.C. R. Araújo, R.T. Doumbi, A. Ferreira, F. Vaz, C. Lopes, D. Munteanu, M.A. Correa Journal of Alloys and Compounds, 2026 The magnetization dynamics of Yttrium iron garnet (YIG)/ SnTe thin film heterostructure were investigated using the Magnetoimpedance effect. The oriented growth of the YIG layer on a (111) Gadolinium Gallium Garnet substrate was confirmed using X-ray Diffraction and the static magnetic properties were verified through Vibrating Sample Magnetometer (VSM). The magnetoimpedance response was used to evaluate the effect of the SnTe layer on the mechanisms behind the spin-pumping of two distinct YIG thicknesses, when compared to a reference sample of YIG/Ag. The results indicated that the SnTe successfully modified the effective damping parameter ( α eff ), as observed through peak broadening in the MI response and the related ferromagnetic resonance (FMR) parameters. The discussion is based on the different contributions to the FMR linewidth ( Δ H ). To elucidate the mechanisms underlying the modifications in the magnetoimpedance response, a theoretical approach is proposed, based on changes in two-magnon scattering and spin pumping, with YIG thickness as a variable to expand the simulations. Simulated results agree well with the experimental data. • Yttrium Iron Garnet heterostructures • Magnetoimpedance for FMR studies • Tin Telluride thin films for spin-pumping enhancement • Magnetron Sputtering for multistructure deposition
Highly efficient graphene-supported transition metal carbides as multifunctional material for the adsorption and oxygen evolution reaction applications R.T. Doumbi, D.W. Gnowe, L.C.M. Waffo, G.E. Nko'o, S.M. Fonou, J.M.D. Dangwang, Domga, R.B. da Silva, E. Noubissié, G.B. Noumi, F. Bohn, C.A. Martínez-Huitle, M.A. Correa Ceramics International, 2026 Developing highly efficient and stable electrocatalysts for electrochemical water splitting remains a significant challenge. In this work, a high-performance catalyst based on ceramic materials (titanium and tungsten carbides (G)) supported by graphene (C) (G/C) was prepared, characterized, and applied for removing an organic model compound (methylene blue (MB) dye) and the generation of oxygen gas. Scanning electron microscopy coupled with energy-dispersive spectroscopy revealed details of the material. The structural properties demonstrated that the synthesized nanocomposite consists of graphene, titanium carbide, and tungsten carbide phases. The application of the material for removing MB dye from textile effluent exhibited a maximum adsorption capacity of 175.44 mg/g at ≈ pH 5.5, with an adsorbent mass of 0.015 g and an operation time of 20 min. Meanwhile, when the material was used as an electrocatalyst for promoting the oxygen evolution reaction (OER), its catalytic activity was found to be remarkably efficient with good durability in strong alkaline media. However, the G/C nanocomposite exhibited an OER overvoltage of about 266 mV at a current density ( j ) of 10 mA cm -2 , remaining stable during 30 h. These significant results could be attributed to the strong link between the graphene support and the transitional metal-based carbides, as well as to the mesoporous structure, which provides more active adsorption sites, facilitates oxygen bubble release, and enhances mass transfer during OER kinetics. The synthesis of the G/C nanocomposite in this work paves the way for future large-scale treatment applications and energy-saving production.
Sol–Gel Synthesis of SnO2/Zn2–SnO4Heterostructure for the Photocatalytic Degradation of Malachite Green Paulino V. M. Muguirrima, Romuald T. Doumbi, Mario A. M. Castro, Camila Louyse Oliveira da Rocha, Armando Monte Mendes, Theresa B. O. Nunes, Mauricio R. D. Bomio, Fabiana V. Motta, Marcio A. Correa, Carlos Alberto Paskocimas, Antonio Eduardo Martinelli ACS Omega, 2026 High Resolution Image Download MS PowerPoint Slide The discharge of contaminated effluents containing organic dyes is a persistent environmental issue due to their toxicity, stability, and resistance to biodegradation. Among these dyes, malachite green (MG) is particularly concerning because of its widespread industrial use and severe ecological and health impacts. To address this problem, SnO 2 /Zn 2 –SnO 4 heterostructures were synthesized via sol–gel and evaluated for MG degradation under ultraviolet irradiation. The SnO 2 /Zn 2 –SnO 4 catalyst has been characterized by X-ray diffraction (XRD), photoluminescence (PL), field-emission scanning electron microscopy coupled with energy-dispersive spectroscopy (FE-SEM-EDS), ultraviolet–visible (UV–vis) spectroscopy, Brunauer–Emmett–Teller method, and electrochemical impedance spectroscopy (EIS). Structural properties revealed that the catalyst presents a polycrystalline structure and crystallite sizes in the range of 11–25 nm. The band gap energy of the Sn:Zn (1:2) catalyst was 2.88 eV, which was lower than that of pure SnO 2 (3.33 eV), indicating enhanced light absorption. MG photocatalysis degradation tests were conducted under ultraviolet irradiation. The ZnSn 1:2 sample achieved a degradation efficiency of approximately 96% after 100 min, while the pure SnO 2, ZnSn 1:4, and ZnSn 1:6 samples reached only 81%, 88%, and 92%, respectively. This could be due to the presence of h + and • OH species, which were identified as the most active radicals during the photocatalytic process. Furthermore, the 1:2 ZnSn photocatalyst demonstrated good stability and maintained its photocatalytic performance after five successive degradation cycles. These results indicate that the Zn/Sn 1:2 ratio results in the highest photocatalytic efficiency, confirming the superior effect of Zn 2 –SnO 4 structure in enhancing charge separation and accelerating the degradation of malachite green compared with the other compositions.
Study of the Combined Effect of the Electrolyte and Ultrasound on Hydrogen Production in a Proton Exchange Membrane Electrolysis Cell Romuald T. Doumbi, Jade O. P. Rodriguez, Nivia. L. C. Siqueira, Amanda S. Albuquerque, Mauricio R. D. Bomio, Serge M. Fonou, Felipe Bohn, Marcio A. Correa Fuel Cells, 2026 The proton exchange membrane electrolysis cell (PEMEC) is a practical approach for sustainable hydrogen production. To date, several studies have aimed to improve hydrogen production efficiency. This work examined the impact of electrolyte type and ultrasonics on hydrogen generation under static mode using a PEMEC. Therefore, the effects of three electrolytes (water, sulfuric acid, and phosphoric acid) were studied. The influence of electrolysis time, voltage, electrolyte concentration, and current intensity was optimized. Using the optimized parameters, the sono‐electrochemical process under indirect sonolysis was explored to improve the enhancement of hydrogen production efficiency. The results showed that electrolysis time and voltage significantly affect hydrogen generation in the PEMEC. Hydrogen production was highest with sulfuric acid at a concentration of 0.15 M, and a more concentrated solution negatively affected the mass transfer. Ultrasonic‐assisted electrochemistry also helped reduce electrolysis time from 30 to 10 min while increasing hydrogen efficiency. When using sulfuric acid 0.15 M, low electrolysis time (10 min), a current intensity of 55.0 mA, and a potential of 1.9 V, the maximum hydrogen efficiency was 92.9%. On the other hand, these parameters combined with the ultrasound effect allow reaching the maximum hydrogen efficiency of 99.9% at only 10 min of electrolysis. At the same time, the energy efficiency under sono‐electrolysis was increased from 24.2% to 32.8%. Our findings highlight the potential of the sono‐electrochemical process with PEMEC as a promising, efficient, and low‐time method for green hydrogen production compared to traditional hydrogen production methods.
Colloidal stability improvement of cobalt ferrite encapsulated in carboxymethylated cashew gum Maria K.S.O. Abreu, Maria A.S. Silva, Dieric S. Abreu, Ana R. Richter, Regina C.M. de Paula, Vera R.L. Constantino, Igor F. Vasconcelos, Francisco G.S. de Oliveira, Acácio S. de Melo, Marcio A. Correa, Izaura C.N. Diógenes Colloids and Surfaces A Physicochemical and Engineering Aspects, 2023
Experimental evidence of exchange forces between nanoparticles in a superparamagnetic system João Carlos Rocha de Araújo, Carlos Augusto de Moraes Iglesias, Rodolfo Bezerra da Silva, Suzana Araujo Barbosa, Jayson Xavier, Ernani Dias da Silva Filho, José Luis Cardozo Fonseca, Paloma Boeck Souza, Cristiani Campos Plá Cid, Fernando Luis de Araujo Machado, Edimilson Félix da Silva, Matheus Gamino, Suzana Nóbrega de Medeiros, Marcio Assolin Correa, Felipe Bohn Journal of Physics D Applied Physics, 2022
Magnetic nanoparticles hyperthermia in a non-adiabatic and radiating process C. A. M. Iglesias, J. C. R. de Araújo, J. Xavier, R. L. Anders, J. M. de Araújo, R. B. da Silva, J. M. Soares, E. L. Brito, L. Streck, J. L. C. Fonseca, C. C. Plá Cid, M. Gamino, E. F. Silva, C. Chesman, M. A. Correa, S. N. de Medeiros, F. Bohn Scientific Reports, 2021
Improving the thermomechanical and magnetic properties of CuMnAl Heusler alloy by TiB doping Fabiana Kelly de Medeiros, Danniel Ferreira de Oliveira, Marcio Assolin Correa, Felipe Bohn, J. G. S Santos, Bruno Alessandro Silva Guedes de Lima, Tiberio Andrade dos Passos, Ramon Alves Torquato, Rodinei Medeiros Gomes Journal of Materials Science Materials in Electronics, 2021
Waiting-time statistics in magnetic systems Ivandson Praeiro de Sousa, Gustavo Zampier dos Santos Lima, Marcio Assolin Correa, Rubem Luis Sommer, Gilberto Corso, Felipe Bohn Scientific Reports, 2020
Effect of photobiomodulation and exercise on early remodeling of the Achilles tendon in streptozotocin-induced diabetic rats Anderson Rodrigues de Oliveira, Flávio Santos da Silva, Raul Hernandes Bortolin, Dáfiny Emanuele da Silva Marques, Gracielle Vieira Ramos, Rita C. Marqueti, Naisandra Bezerra da Silva, Karina Carla de Paula Medeiros, Márcio Assolin Corrêa, João Paulo Matos Santos Lima, Adriana Augusto de Rezende, Paul W. Ackermann, Bento J. Abreu, Wouber Hérickson de Brito Vieira Plos One, 2019
Impact of interfacial coupling on the structural, magnetic, and dielectric properties of CoFe2O4/NiO nanocomposites RAO Pinto, JCR Araújo, RB Silva, ALR Souza, A Ferreira, Y Abbas, ... Journal of Physics and Chemistry of Solids, 113195 , 2026 2026 Citations: 2
A Novel Approach to Brewery Effluent Treatment: Adsorption, Electrochemical Oxidation, and in Situ Regeneration for Efficient Nitrogenous Pollutants Removal RT Doumbi, K Allahossem, DW Gnowe, LCM Waffo, EN Guillaume, ... Water, Air, & Soil Pollution 237 (12), 706 , 2026 2026
Zero-Field Skyrmions in Confined Pt/Co/Ta Multilayer Nanodisks for Spintronic Devices Y Urbina Elgueta, N Tasso, S Oyarzún, G Herrera, J Escrig, D Toneto, ... ACS Applied Nano Materials , 2026 2026
Microscopic Energy Dissipation and Thermal Response in Magnetic Hyperthermia Provide Complementary Frameworks for Specific Loss Power JCR Araújo, CA De Moraes Iglesias, J Xavier, RO Pinto, Y Abbas, ... ACS Applied Nano Materials , 2026 2026
Magnetoimpedance Effect in Y5Fe3O12/SnTe/Ag and Y5Fe3O12/Ag/Ag heterostructures A de Morais, JGS Santos, EC Souza, JMD Neto, JCR Araújo, RT Doumbi, ... Journal of Alloys and Compounds 1064, 187916 , 2026 2026
Sol–Gel Synthesis of SnO 2 /Zn 2 –SnO 4 Heterostructure for the Photocatalytic Degradation of Malachite Green PVM Muguirrima, RT Doumbi, MAM Castro, CLO Rocha, AM Mendes, ... ACS omega 11 (9), 15494-15507 , 2026 2026
Study of the Combined Effect of the Electrolyte and Ultrasound on Hydrogen Production in a Proton Exchange Membrane Electrolysis Cell RT Doumbi, JOP Rodriguez, NLC Siqueira, AS Albuquerque, MRD Bomio, ... Fuel Cells 26 (1), e70054 , 2026 2026
Standing wave shift magnetoimpedance in Cu/YIG/Cu cylindrical system at microwave frequencies CAM Iglesias, SM Rezende, J Xavier, JHR Lima, JDM de Lima, ... Journal of Magnetism and Magnetic Materials, 173784 , 2026 2026 Citations: 1
Highly efficient graphene-supported transition metal carbides as multifunctional material for the adsorption and oxygen evolution reaction applications RT Doumbi, DW Gnowe, LCM Waffo, GE Nko’o, SM Fonou, ... Ceramics International , 2026 2026 Citations: 1
Chromium nitride thin films and their prospects for piezoresistive sensing applications C Spârchez, J Rodrigues, A Souza, C Lopes, C Gabor, MA Correa, ... Surfaces and Interfaces, 108499 , 2026 2026
Experimental and theoretical approaches for thermomagnetic properties of CoFe-based flexible amorphous ribbons: shape anisotropy contribution SA de Oliveria, RT Doumbi, A de Morais, JMD Neto, EC Souza, F Bohn, ... Journal of Magnetism and Magnetic Materials, 173738 , 2026 2026
Visible-light-driven piezophotocatalytic degradation of congo red using Bi2MoO6/Nb2O5 heterostructures RA Oliveira, MAM Castro, LM Costa, MD Teodoro, MA Correa, ... Ceramics International , 2026 2026 Citations: 2
Magnetic behavior and EMI shielding properties of PCL/PBAT composites containing cobalt ferrite nanoparticles PH Pessoa, BA Passos, AR dos Santos, AR Rodrigues, EC Souza, ... Journal of Magnetism and Magnetic Materials, 173731 , 2026 2026
Flexible ferromagnetic composites based-Ni44Mn44Sn9Cu3 Heusler alloy and PDMS: characterization and properties CC Soares, MJB Cardoso, MA Correa, F Bohn, A de Morais, IF Leite, ... Materials Letters, 139332 , 2026 2026
High Efficiency of the Graphene-Decorated Boron Nitride for Dye Removal from Aqueous Solution: Modeling and Optimization Process Designed for Textile Wastewater Treatment RT Doumbi, PVM Muguirrima, A de Morais, F Bohn, CA Martínez-Huitle, ... ACS omega 10 (43), 51686-51699 , 2025 2025 Citations: 5
Optimization of the production of mesoporous carbons from chicken bones and cashew nut shells for the oxygen evolution reaction RT Doumbi, JMD Neto, PH Chibério¹, MRD Bomio, FV Motta, F Bohn, ... Emergent Materials, 1-14 , 2025 2025
Facile Sol–Gel Synthesis of Graphene-Supported FeNi Nanocatalysts for Enhanced Oxygen Evolution Reaction RT Doumbi, JMD Neto, A Morais, AMD Freitas, F Bohn, KP Furlan, ... ACS omega 10 (42), 50431-50444 , 2025 2025 Citations: 2
The effect of iron oxide synergism on the structural and magnetic properties of iron-doped ZnO AF dos Santos, AM da Silva, TK de Lima, NO Dantas, MA Correa, ... Next Materials 9, 101047 , 2025 2025 Citations: 2
Constant-Q model can reproduce the frequency-dependent dispersion of GPR signals in sedimentary rocks EB Santos, RRS Dantas, MMX Junior, WE Medeiros, FL Santana, ... Journal of Applied Geophysics, 105945 , 2025 2025
Impact of magnetic alignment on the structural, morphological and magnetic properties of anisotropic MnFe2O4-SiO2 composites derived from minerals ÁP da Silva, MM de Góis, J Xavier, MA Correa, MA Morales, VPS Caldeira, ... Journal of Alloys and Compounds, 183351 , 2025 2025
MOST CITED SCHOLAR PUBLICATIONS
Novel nanohybrid biocatalyst: application in the kinetic resolution of secondary alcohols WS Galvão, BB Pinheiro, LRB Golçalves, MC De Mattos, TS Fonseca, ... Journal of Materials Science 53 (20), 14121-14137 , 2018 2018 Citations: 146
A new heterofunctional support for enzyme immobilization: PEI functionalized Fe3O4 MNPs activated with divinyl sulfone. Application in the immobilization of lipase from … RM Bezerra, RRC Monteiro, DMA Neto, FFM da Silva, RCM de Paula, ... Enzyme and microbial technology 138, 109560 , 2020 2020 Citations: 101
Tailoring the magnetoimpedance effect of NiFe/Ag multilayer MA Corrêa, F Bohn, C Chesman, RB Da Silva, ADC Viegas, RL Sommer Journal of Physics D: Applied Physics 43 (29), 295004 , 2010 2010 Citations: 99
Design of a lipase-nano particle biocatalysts and its use in the kinetic resolution of medicament precursors RM Bezerra, DMA Neto, WS Galvão, NS Rios, ACLM Carvalho, ... Biochemical Engineering Journal 125, 104-115 , 2017 2017 Citations: 97
Further stabilization of lipase from Pseudomonas fluorescens immobilized on octyl coated nanoparticles via chemical modification with bifunctional agents NS Rios, EG Morais, W dos Santos Galvão, DMA Neto, JCS Dos Santos, ... International Journal of Biological Macromolecules 141, 313-324 , 2019 2019 Citations: 82
Tuning structural, magnetic, electrical, and dielectric properties of MgFe2O4 synthesized by sol-gel followed by heat treatment JCR Araújo, S Araujo-Barbosa, ALR Souza, CAM Iglesias, J Xavier, ... Journal of Physics and Chemistry of Solids 154, 110051 , 2021 2021 Citations: 75
Quantitative scaling of magnetic avalanches G Durin, F Bohn, MA Corrêa, RL Sommer, P Le Doussal, KJ Wiese Physical review letters 117 (8), 087201 , 2016 2016 Citations: 75
Playing with universality classes of Barkhausen avalanches F Bohn, G Durin, MA Correa, NR Machado, RD Della Pace, C Chesman, ... Scientific reports 8 (1), 11294 , 2018 2018 Citations: 67
Magnetic nanoparticles hyperthermia in a non-adiabatic and radiating process CAM Iglesias, JCR De Araújo, J Xavier, RL Anders, JM De Araújo, ... Scientific Reports 11 (1), 11867 , 2021 2021 Citations: 54
Thickness dependence of the high-frequency magnetic permeability in amorphous Fe73. 5Cu1Nb3Si13. 5B9 thin films ADC Viegas, MA Corrêa, L Santi, RB Da Silva, F Bohn, M Carara, ... Journal of applied physics 101 (3) , 2007 2007 Citations: 52
Characterization and photocatalytic application of Ce4+, Co2+, Mn2+ and Ni2+ doped Fe3O4 magnetic nanoparticles obtained by the co-precipitation method NFA Neto, LE Nascimento, M Correa, F Bohn, MRD Bomio, FV Motta Materials Chemistry and Physics 242, 122489 , 2020 2020 Citations: 51
Thickness dependence of the magnetic anisotropy and dynamic magnetic response of ferromagnetic NiFe films EF Silva, MA Corrêa, RD Della Pace, CC Plá Cid, PR Kern, M Carara, ... Journal of Physics D: Applied Physics 50 (18), 185001 , 2017 2017 Citations: 50
Dynamic magnetic behavior in non-magnetostrictive multilayered films grown on glass and flexible substrates K Agra, TJA Mori, LS Dorneles, VM Escobar, UC Silva, C Chesman, ... Journal of magnetism and magnetic materials 355, 136-141 , 2014 2014 Citations: 49
Angular dependence of asymmetric magnetoimpedance in exchange biased NiFe/IrMn multilayers RB Da Silva, MA Corrêa, EF Silva, TJA Mori, RD Della Pace, R Dutra, ... Applied Physics Letters 104 (10) , 2014 2014 Citations: 44
High frequency magnetoimpedance in Ni81Fe19/Fe50Mn50 exchange biased multilayer RB Da Silva, ADC Viegas, VP Nascimento, MA Corrêa, LF Schelp, ... Applied Physics Letters 94 (4) , 2009 2009 Citations: 43
Disclosing the Structural, Electronic, Magnetic, and Morphological Properties of CuMnO 2 : A Unified Experimental and Theoretical Approach AAG Santiago, RL Tranquilin, MC Oliveira, RAP Ribeiro, SR de Lazaro, ... The Journal of Physical Chemistry C 124 (9), 5378-5388 , 2020 2020 Citations: 42
Universal temporal characteristics and vanishing of multifractality in Barkhausen avalanches GZDS Lima, G Corso, MA Correa, RL Sommer, PC Ivanov, F Bohn Physical Review E 96 (2), 022159 , 2017 2017 Citations: 40
Magnetoimpedance effect at the high frequency range for the thin film geometry: Numerical calculation and experiment MA Corrêa, F Bohn, RB Da Silva, RL Sommer Journal of Applied Physics 116 (24) , 2014 2014 Citations: 39
Magnetoimpedance of single and multilayered FeCuNbSiB films in frequencies up to 1.8 GHz MA Corrêa, ADC Viegas, RB Da Silva, AMH De Andrade, RL Sommer Journal of applied physics 101 (4) , 2007 2007 Citations: 39
Tunable asymmetric magnetoimpedance effect in ferromagnetic NiFe/Cu/Co films EF Silva, M Gamino, AMH De Andrade, MA Corrêa, M Vázquez, F Bohn Applied Physics Letters 105 (10) , 2014 2014 Citations: 37