Semiconducting SnO2 nanoparticles for surface-enhanced Raman scattering applications P. Surya Lakshmi, B. Mohanarao, P. Babuji, P. V. Prakash Madduri, L. Jyothi, G. Krishna Podagatlapalli, K. H. Chae, G. S. Chang, V. Saikiran Rsc Advances, 2026 This study reports the synthesis of SnO 2 nanoparticles using a sol–gel method and thermal annealing at 800 and 900 °C to optimise their structural and surface properties for non-plasmonic semiconductor-based SERS applications.
Low-temperature XRD study of ferroelectric phase transition and enhanced magnetodielectric effect in Tb1−xInxMnO3 Sh. Soumya, Sattibabu Bhumireddi, K. Ugendar, Durga Rao Tadisetti, Manish K. Niranjan, Arvind Kumar Yogi, Vadavalli Saikiran, R. J. Choudhary Journal of Applied Physics, 2025 This study investigates the structural, dielectric, and magnetodielectric properties of indium-doped TbMnO3 (Tb1−xInxMnO3, x = 0.00, 0.05, 0.075) synthesized via the solid-state method. Low-temperature x-ray diffraction (XRD) measurements reveal a temperature-driven phase transition from the centrosymmetric orthorhombic Pnma space group at 300 K to the non-centrosymmetric Pna21 space group at 11 K, indicative of ferroelectric behavior. Below the transition temperature, sudden changes in lattice parameters, unit cell volume, Mn–O bond lengths, and Mn–O–Mn bond angles with varying temperature may be associated with spin–lattice coupling that underlies magnetoelectric behavior. The optical bandgap, as estimated from UV–visible absorption spectra, slightly decreases with In3+ substitution. This experimental observation is well supported by DFT + U calculations. Dielectric and magnetodielectric measurements confirm ferroelectric transitions at ∼22 ± 0.5, 20 ± 0.5, and 20 ± 0.5 K for x = 0.00, 0.05, and 0.075, respectively. An enhanced magnetodielectric effect is observed with In doping, peaking at 3.49% for x = 0.05 under a 5 T magnetic field. The findings highlight the role of non-magnetic A-site doping in tuning the multiferroic behavior of TbMnO3, making it a promising candidate for multifunctional device applications.
1D and 3D photonic crystal structures towards field enhancement, sers and optical limiting studies Advances in Applied Spectroscopy Concepts and Techniques, 2017
Femtosecond laser direct writing of sub-wavelength surface structures on metal and semiconductor materials International Conference on Fibre Optics and Photonics 2014, 2014
Influence of solvent on the optical and structural properties of Germanium nanoparticles synthesized by nanosecond laser ablation in liquids International Conference on Fibre Optics and Photonics 2014, 2014
Femtosecond laser direct writing of sub-wavelength surface structures on metal and semiconductor materials Proceedings 12th International Conference on Fiber Optics and Photonics Photonics 2014, 2014
Influence of solvent on the optical and structural properties of Germanium nanoparticles synthesized by nanosecond laser ablation in liquids Proceedings 12th International Conference on Fiber Optics and Photonics Photonics 2014, 2014
Electronic excitation induced modifications in the structural, optical and enhancement in SERS activity of nanostructured SnO2 thin films V Saikiran, B Mohanarao, PS Lakshmi, P Babuji, AP Pathak, L Jyothi, ... Materials Science and Engineering: B 328, 119352 , 2026 2026 Citations: 1
Semiconducting SnO 2 nanoparticles for surface-enhanced Raman scattering applications PS Lakshmi, B Mohanarao, P Babuji, PVP Madduri, L Jyothi, ... RSC advances 16 (24), 21740-21755 , 2026 2026 Citations: 1
Low-temperature XRD study of ferroelectric phase transition and enhanced magnetodielectric effect in Tb1− xInxMnO3 S Soumya, S Bhumireddi, K Ugendar, DR Tadisetti, MK Niranjan, AK Yogi, ... Journal of Applied Physics 138 (16) , 2025 2025
Plasmon mediated modifications in photoluminescence and surface enhanced Raman scattering from Au-ZnO hybrid nanostructured films B Mohanarao, P Babuji, M Venkaiah, V Saikiran Applied Physics A 131 (9), 679 , 2025 2025 Citations: 1
Silver nanoparticle thin films fabricated by DC sputtering for surface enhanced Raman scattering applications P Babuji, V Saikiran AIP Conference Proceedings 3198 (1), 020063 , 2025 2025
5áMeV Si ion irradiation effects on structural and morphological properties of multiwalled carbon nanotubes TVS Suresh, V Saikiran, AP Pathak Nuclear Instruments and Methods in Physics Research Section B: Beam … , 2024 2024 Citations: 2
Crystallization of Germanium-SiO2 composite films via nanosecond laser pulse irradiation G Neelima, P Babuji, AP Pathak, DN Rao, PG Krishna, V Saikiran Thin Solid Films 796, 140331 , 2024 2024
Surface-Enhanced Raman Scattering Studies of Au-Ag Bimetallic Nanoparticles with a Tunable Surface Plasmon Resonance Wavelength Synthesized by Picosecond Laser Irradiation P Babuji, MA Taher, MH Dar, DN Rao, PG Krishna, V Saikiran Photonics 10 (12), 1345 , 2023 2023 Citations: 6
Ion Beam Synthesis of Germanium Nanocrystals—A Fluence Dependence Study V Saikiran, G Neelima, NS Rao, AP Pathak International Conference on Transportation Infrastructure Projects … , 2022 2022
Ion irradiation-induced effects on optical and structural properties of Ge nanoparticles synthesized by laser ablation G Neelima, T Mahesh, N Manikanthababu, AP Pathak, V Saikiran Physica B: Condensed Matter 634, 413805 , 2022 2022 Citations: 3
Optical, structural and morphological studies of nanostructures fabricated on silicon surface by femtosecond laser irradiation R Kuladeep, L Jyothi, C Sahoo, D Narayana Rao, V Saikiran Journal of Materials Science 57 (3), 1863-1880 , 2022 2022 Citations: 9
Novel synthesis and study of nonlinear absorption and surface-enhanced Raman scattering of carbon nanotubes decorated with silver nanoparticles NA Saad, E Ramya, V Saikiran, SRG Naraharisetty, DN Rao Chemical Physics 533, 110703 , 2020 2020 Citations: 8
Approach-to-magnetic saturation of Fe nanoparticle/nanorod encapsulated multi-walled carbon nanotubes under heavy ion irradiation PVP Madduri, N Manikanthababu, I Sameera, R Bhatia, AP Pathak, ... Physica B: Condensed Matter 577, 411773 , 2020 2020 Citations: 5
Effects of ion irradiation on the structural and electrical properties of HfO2/SiON/Si p-metal oxide semiconductor capacitors N Manikanthababu, V Saikiran, T Basu, K Prajna, S Vajandar, AP Pathak, ... Thin Solid Films 682, 156-162 , 2019 2019 Citations: 12
Strategies in laser-induced synthesis of nanomaterials V Saikiran, MH Dar, R Kuladeep, L Jyothi, DN Rao Nanomaterials Synthesis, 149-199 , 2019 2019 Citations: 4
Morphology Effect on SERS Activity of Embedded Silver Nanostructures RR Juluri, S Ravulapalli, S Vadavlli, SV Parlapalli physica status solidi (a) 215 (24), 1800533 , 2018 2018 Citations: 3
Electronic excitation induced modifications in elongated iron nanoparticle encapsulated multiwalled carbon nanotubes under ion irradiation V Saikiran, P Bazylewski, I Sameera, R Bhatia, AP Pathak, V Prasad, ... Applied Surface Science 439, 823-832 , 2018 2018 Citations: 10
Femtosecond laser induced nanostructuring of graphite for the fabrication of quasi-periodic nanogratings and novel carbon nanostructures V Saikiran, MH Dar, DN Rao Applied surface science 428, 177-185 , 2018 2018 Citations: 13
Ion induced intermixing and consequent effects on the leakage currents in HfO 2 /SiO 2 /Si systems N Manikanthababu, TK Chan, S Vajandar, V Saikiran, AP Pathak, ... Applied Physics A 123 (5), 303 , 2017 2017 Citations: 22
1D and 3D photonic crystal structures towards field enhancement, sers and optical limiting studies D Narayana Rao, V Sreeramulu, S Guddala, V Saikiran, K Shadak Alee, ... Advances in Applied Spectroscopy: Concepts and Techniques, 89-126 , 2017 2017
MOST CITED SCHOLAR PUBLICATIONS
Femtosecond laser nanostructuring of titanium metal towards fabrication of low-reflective surfaces over broad wavelength range DNR Mudasir H. Dar, R. Kuladeep, V. Saikiran Applied Surface Science 371, 479-487 , 2016 2016 Citations: 78
Optical properties of germanium nanoparticles synthesized by pulsed laser ablation in acetone S Vadavalli, S Valligatla, B Neelamraju, MH Dar, A Chiasera, M Ferrari, ... Frontiers in Physics 2, 57 , 2014 2014 Citations: 67
Synthesis of ultra-small silicon nanoparticles by femtosecond laser ablation of porous silicon VS Vendamani, S Hamad, V Saikiran, AP Pathak, S Venugopal Rao, ... Journal of materials science 50 (4), 1666-1672 , 2015 2015 Citations: 45
Synthesis, characterization and radiation damage studies of high-k dielectric (HfO2) films for MOS device applications N Manikanthababu, N Arun, M Dhanunjaya, V Saikiran, ... Radiation Effects and Defects in Solids 170 (3), 207-217 , 2015 2015 Citations: 27
Ion induced intermixing and consequent effects on the leakage currents in HfO 2 /SiO 2 /Si systems N Manikanthababu, TK Chan, S Vajandar, V Saikiran, AP Pathak, ... Applied Physics A 123 (5), 303 , 2017 2017 Citations: 22
Formation of Ge nanocrystals from ion-irradiated GeO2 nanocrystals by swift Ni ion beam V Saikiran, NS Rao, G Devaraju, GS Chang, AP Pathak Nuclear Instruments and Methods in Physics Research Section B: Beam … , 2013 2013 Citations: 18
Synthesis of Ge nanocrystals by atom beam sputtering and subsequent rapid thermal annealing NS Rao, AP Pathak, N Sathish, G Devaraju, V Saikiran, PK Kulriya, ... Solid state communications 150 (43-44), 2122-2126 , 2010 2010 Citations: 17
SHI irradiation fluence and energyloss dependence effects on Ge NCs with different initial sizes embedded in SiO2 V Saikiran, NS Rao, G Devaraju, AP Pathak Nuclear Instruments and Methods in Physics Research Section B: Beam … , 2014 2014 Citations: 15
Ultrafast laser induced subwavelength periodic surface structures on semiconductors/metals and application to SERS studies V Saikiran, MH Dar, R Kuladeep, NR Desai MRS Advances 1 (49), 3317-3327 , 2016 2016 Citations: 14
Femtosecond laser induced nanostructuring of graphite for the fabrication of quasi-periodic nanogratings and novel carbon nanostructures V Saikiran, MH Dar, DN Rao Applied surface science 428, 177-185 , 2018 2018 Citations: 13
Growth and characterization of nc-Ge prepared by microwave annealing NS Rao, AP Pathak, G Devaraju, V Saikiran Vacuum 85 (10), 927-931 , 2011 2011 Citations: 13
Effects of ion irradiation on the structural and electrical properties of HfO2/SiON/Si p-metal oxide semiconductor capacitors N Manikanthababu, V Saikiran, T Basu, K Prajna, S Vajandar, AP Pathak, ... Thin Solid Films 682, 156-162 , 2019 2019 Citations: 12
150áMeV Au ion induced modification of Si nanoparticles prepared by laser ablation V Saikiran, VS Vendamani, S Hamad, SVSN Rao, SV Rao, AP Pathak Nuclear Instruments and Methods in Physics Research Section B: Beam … , 2014 2014 Citations: 12
Electronic excitation induced modifications in elongated iron nanoparticle encapsulated multiwalled carbon nanotubes under ion irradiation V Saikiran, P Bazylewski, I Sameera, R Bhatia, AP Pathak, V Prasad, ... Applied Surface Science 439, 823-832 , 2018 2018 Citations: 10
Ion beam irradiation effects on Ge nanocrystals synthesized by using RF sputtering followed by RTA V Saikiran, NS Rao, G Devaraju, GS Chang, AP Pathak Nuclear Instruments and Methods in Physics Research Section B: Beam … , 2013 2013 Citations: 10
Optical, structural and morphological studies of nanostructures fabricated on silicon surface by femtosecond laser irradiation R Kuladeep, L Jyothi, C Sahoo, D Narayana Rao, V Saikiran Journal of Materials Science 57 (3), 1863-1880 , 2022 2022 Citations: 9
Synthesis and tailoring of GaN nanocrystals at room temperature by RF magnetron sputtering G Devaraju, AP Pathak, N Srinivasa Rao, V Saikiran, ... Radiation Effects and Defects in Solids 167 (9), 659-665 , 2012 2012 Citations: 9
Ion beam-mixing effects in nearly lattice-matched AlInN/GaN heterostructures by swift heavy ion irradiation G Devaraju, SVS Nageswara Rao, NS Rao, V Saikiran, TK Chan, ... Radiation Effects and Defects in Solids 167 (7), 506-511 , 2012 2012 Citations: 9
Photoluminescence and photoluminescence excitation studies in 80 MeV Ni ion irradiated MOCVD grown GaN G Devaraju, AP Pathak, NS Rao, V Saikiran, F Enrichi, E Trave Nuclear Instruments and Methods in Physics Research Section B: Beam … , 2011 2011 Citations: 9
Novel synthesis and study of nonlinear absorption and surface-enhanced Raman scattering of carbon nanotubes decorated with silver nanoparticles NA Saad, E Ramya, V Saikiran, SRG Naraharisetty, DN Rao Chemical Physics 533, 110703 , 2020 2020 Citations: 8
