Antioxidant activity and cytotoxicity of greigite nanoparticles synthesized by hydrothermal technique Dalal Maseer Naser, Sadeq H. Lafta, Mustafa Shakir Hashim Biotechnology and Applied Biochemistry, 2024 The effects of 180, 210, and 230°C reaction temperatures on the structural and magnetic properties of synthesized iron sulfide nanoparticles were studied. The Rietveld refinement analysis result of the X‐ray diffraction data indicated that greigite was the dominant phase in all samples. The sample was prepared at 210°C for 18 h and had a greater wt% ratio of the greigite phase. The crystallite and particle sizes increased with increasing reaction temperatures. Scanning electron microscope images confirmed the presence of aggregation of synthesized rod‐shaped nanoparticles. The magnetic hysteresis curves of all samples showed ferromagnetic behavior at room temperature. The magnetic saturation of three samples increases with increased reaction temperature, but the coercive force has the opposite behavior. Antioxidant activity and cytotoxicity of the sample synthesized at 210°C were investigated. This sample killed cancer cells at relatively moderate and high concentrations with high viability of normal cells, demonstrating the sample's suitability for use in killing cancer cells while avoiding normal cells.
Study the Effect of Ion Doping on ZnO Nanostructures for Room Temperature NH3 Gas Sensor Ahmed M. Hussein, Hasanain S. Azeez, Roaa A. Abdalrahman, Mukhlis M. Ismail, Sadeq H. Lafta Ecs Journal of Solid State Science and Technology, 2024 We investigated the impact of doping ion type on the performance of a ZnO-based ammonia gas sensor to show the capability of these ions to achieve high-performance gas sensing at room temperature. A sol-gel method was used to synthesize both doped and undoped ZnO nanostructures, while the gas sensor device was made by casting ZnO onto a glass substrate for a uniform thin film. Then Al electrodes were attached to the film. The characterization was carried out via field-emission scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, UV–vis, Pl luminescence, Brunnauer-Emmett-Teller, I-V characteristic, and gas sensor setup device. PL measurement shows an increase in green emission spectra with Ba ion shifting the peaks from VO to VO+ and VO+ to VO++ states. The gas sensor test at room temperature greatly enhances performance for certain ions. The Ba ions greatly influence gas sensor performance, increasing the response to 24 compared to 5 for undoped ZnO. The room-temperature enhancement achieved by the Ba ions could open the way to investigate more effective dopants for NH3 gas sensors.
Implementation of An Optical Gauss Meter Based on Ferrite and Hematite Ferrofluids Sadeq H. Lafta, Hussein T. Salloom, Furqan S. Hashim Iraqi Journal of Science, 2024 Three compositions Ni0.5Fe2.5O4, Ni0.7Fe2.3O4, and Fe2O3 were prepared by the co-precipitation method and checked by XDR, SEM, and VSM. The nanoparticles show a good match with the XRD standards. The particle sizes were 25, 32, and 18nm for the above compositions, respectively. The first composition showed the highest magnetization saturation. Suspensions containing the mentioned nanoparticles were prepared with two carrier fluids, distilled water, and dimethylsulphoxide (DMSO). A transmission to ultraviolet-visible light was tested and showed good transparency of more than 60 % in the red light region. The transparency to 623nm laser light under different magnetic fields of the six suspensions was tested. A simple device was fabricated to perform this test. The water suspension in water Ni0.5Fe2.5O4 has a larger variation in the transmitted power. The suspension of hematite shows no sensible change in the transmitted power. The magnetic properties of the nanoparticles and the dispersion property of the carrier fluid were behind the explanation of the suspension behaviors under the influence of the magnetic field.
Nanostructural, mechanical, dielectric, and morphological measurements of (BT) BaTiO3 and (BCT) BaCaTiO3 for energy storage applications KR Gbashi, A Bahari, SH Lafta Journal of Materials Science: Materials in Electronics 37 (10), 751 , 2026 2026
Multi-layer ceramics based on Ba (CaTi) O3 capacitors and investigation of their temperature stability performance and characteristics KR Gbashi, A Bahari, SH Lafta Ceramics International , 2026 2026
Effect of Thermal Treatment of Kaolin on the Mechanical Properties of Epoxy–Kaolin Composite RH Hilal, RA Nassif, WK Khalef, RM Salih, SH Lafta, NJ Shukur Petroleum Chemistry 65 (9), 1038-1045 , 2025 2025
Structural, morphological and electrical properties of α-Fe2O3 nanoparticles prepared by chemical route AT Salih, SH Lafta, AA Najim, NB Mahmood, GK Salman Ceramics International 51 (18), 25250-25257 , 2025 2025 Citations: 3
Magnetorheological properties of iron, chromium, and ferrite pawders in cactus oil MH Tareq, SH Lafta, WA Hussain AIP Conference Proceedings 3282 (1), 030002 , 2025 2025
Lightweight deep learning model-based UAVs visual detection SA Mahmood, FA Abdulmunem, SH Lafta Multimedia Tools and Applications 84 (12), 9881-9902 , 2025 2025 Citations: 6
A chaos-based encryption algorithm for database system EA Albahrani, SH Lafta, NH Ghayad Journal of Cyber Security and Mobility 12 (1), 25-53 , 2025 2025 Citations: 7
Implementation of An Optical Gauss Meter Based on Ferrite and Hematite Ferrofluids SH Lafta, HT Salloom, FS Hashim Iraqi Journal of Science, 5055-5066 , 2024 2024
Study the effect of ion doping on ZnO nanostructures for room temperature NH3 gas sensor AM Hussein, HS Azeez, RA Abdalrahman, MM Ismail, SH Lafta ECS Journal of Solid State Science and Technology 13 (8), 087001 , 2024 2024 Citations: 4
Antioxidant activity and cytotoxicity of greigite nanoparticles synthesized by hydrothermal technique DM Naser, SH Lafta, MS Hashim Biotechnology and Applied Biochemistry 71 (4), 960-973 , 2024 2024 Citations: 4
Comparison of field sweep and frequency sweep evaluations of Co–Ni ferrite nanoparticles in the short circuit FMR method SH Lafta Kuwait Journal of Science 51 (2), 100199 , 2024 2024 Citations: 5
Fabrication of a Simple Computerized High Power Supply for Magnetic Measurements SH Lafta, EA Albahrani Int. J. Electr. Eng. Comput. Sci 6, 76-85 , 2024 2024 Citations: 1
Investigation the magnetic properties of CsyCo1-0.5 yFe2O4 nanoparticles at low molar ratio variation MH Tareq, SH Lafta, WA Hussain Eurasian Physical Technical Journal 20 (4), 46 , 2023 2023 Citations: 6
New secure and efficient substitution and permutation method for audio encryption algorithm EA Albahrani, TK Alshekly, SH Lafta The journal of Supercomputing 79 (15), 16616-16646 , 2023 2023 Citations: 19
Efficient and secure chaotic PRNG for color image encryption MM Al-Mhadawi, EA Albahrani, SH Lafta Microprocessors and Microsystems 101, 104911 , 2023 2023 Citations: 27
Effect of Reinforcing PMMA Denture Base Material by Stainless Steel 316L Wires on Flexural Strength WAH Sarmad A. Ibrahim*, Sadeq H. Laftah Journal of Applied Sciences and Nanotechnology 3 (2), 51-58 , 2023 2023 Citations: 4
Magnetic properties of Ba ferrite substituted by low fraction of Ni cations LH Abdel-Mohsen, MS Hashim Kuwait Journal of Science 50 (3A) , 2023 2023 Citations: 4
Thin films for nano-electronics applications based on BaCaTiO 3 –SrZnTiO 3 perovskite with Au electrodes KR Gbashi, A Bahari, SH Lafta Applied Physics A 129 (5), 350 , 2023 2023 Citations: 20
Investigation of static shear stress in a suspension of Co0. 2Ni0. 8Fe2O4 nanoparticles in sesame oil SH Lafta Український фізичний журнал, 413-424 , 2023 2023 Citations: 3
Comparing the role of NaOH and NH4OH on structural and magnetic properties of spinel Ba ferrite synthesized by autocombustion method LH Abdel-Mohsen, SH Lafta, MS Hashim Journal of Physics: Conference Series 2322 (1), 012081 , 2022 2022 Citations: 9
MOST CITED SCHOLAR PUBLICATIONS
A review on audio encryption algorithms using chaos maps-based techniques EA Albahrani, TK Alshekly, SH Lafta Journal of Cyber Security and Mobility, 53–82-53–82 , 2022 2022 Citations: 52
Effect of pH on Structural, Magnetic and FMR Properties of Hydrothermally Prepared Nano Ni Ferrite SH Lafta Open Chemistry 15, 53-60 , 2017 2017 Citations: 46
Block image encryption based on modified playfair and chaotic system EA Albahrani, AA Maryoosh, SH Lafta Journal of Information Security and Applications 51, 102445 , 2020 2020 Citations: 38
Efficient and secure chaotic PRNG for color image encryption MM Al-Mhadawi, EA Albahrani, SH Lafta Microprocessors and Microsystems 101, 104911 , 2023 2023 Citations: 27
Thin films for nano-electronics applications based on BaCaTiO 3 –SrZnTiO 3 perovskite with Au electrodes KR Gbashi, A Bahari, SH Lafta Applied Physics A 129 (5), 350 , 2023 2023 Citations: 20
New secure and efficient substitution and permutation method for audio encryption algorithm EA Albahrani, TK Alshekly, SH Lafta The journal of Supercomputing 79 (15), 16616-16646 , 2023 2023 Citations: 19
Evaluation of hematite nanoparticles weak ferromagnetism SH Lafta Journal of Superconductivity and Novel Magnetism 33 (12), 3765-3772 , 2020 2020 Citations: 19
4d chaotic system as random substitution-box TK Alshekly, EA Albahrani, SH Lafta Multimedia Tools and Applications 81 (11), 15793-15814 , 2022 2022 Citations: 15
The Relation of Crystallite Size and Ni2+ Content to Ferromagnetic Resonance Properties of Nano Nickel Ferrites SH Lafta Journal of Magnetics 22 (2), 188-195 , 2017 2017 Citations: 14
HYDROTHERMAL TEMPERATURE INFLUENCE ON MAGNETIC AND FMR PROPERTIES OF HEMATITE NANOPARTICLES SH Lafta Surface Review and Letters 29 (7), 2250096 , 2022 2022 Citations: 11
Impact strength of surface treated SS316L wires reinforced PMMA SHLWAH Sarmad A. Ibrahim Journal of the Mechanical Behavior of Materials 30 (1) , 2021 2021 Citations: 10
The FMR Behaviour of Li–Ni Ferrite Prepared by Hydrothermal Method EK Al-Shakarchi, SH Lafta, A Musa, M Farle, R Salikhov Journal of Superconductivity and Novel Magnetism 30, 2575-2579 , 2017 2017 Citations: 10
Effect of Ni content on structural and magnetic properties of Li-Ni ferrites nanostructure prepared by hydrothermal method EK Al-Shakarchi, SH Lafta, AM Musa, M Farle, R Salikov Journal of Superconductivity and Novel Magnetism 29 (4), 923-929 , 2016 2016 Citations: 10
Comparing the role of NaOH and NH4OH on structural and magnetic properties of spinel Ba ferrite synthesized by autocombustion method LH Abdel-Mohsen, SH Lafta, MS Hashim Journal of Physics: Conference Series 2322 (1), 012081 , 2022 2022 Citations: 9
Biocompatibility study of α-fe2o3 nanoparticles prepared by hydrothermal method SH Lafta, AA Taha, MM Farhan, SY Abdulfattah Surface Review and Letters 26 (09), 1950058 , 2019 2019 Citations: 8
A chaos-based encryption algorithm for database system EA Albahrani, SH Lafta, NH Ghayad Journal of Cyber Security and Mobility 12 (1), 25-53 , 2025 2025 Citations: 7
Anomaly Event Detection and Localization of Video Clips Using Global and Local Outliers SHL Sawsen Abdulhadi Mahmood, Azal Monshed Abid Indonesian Journal of Electrical Engineering and Computer Science 24 (No. 2 … , 2021 2021 Citations: 7
Broadband ferromagnetic resonance of non-stoichiometric nano Nickle ferrite with different Ni 2+ content SH Lafta Materials Research Express 6 (4), 046103 , 2019 2019 Citations: 7
Impact of Ni²⁺ Content on Broadband Ferromagnetic Resonance of Superparamagnetic Ni Ferrite (Having Fe²⁺-Epoxy Composite SH Lafta IEEE Transaction on Magnetics , 2018 2018 Citations: 7
