A5061075415- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- Magnetic and transport properties of perovskites and related materials
- Dielectric properties of ceramics
- Luminescence Properties of Advanced Materials
- Advanced Condensed Matter Physics
- Transition Metal Oxide Nanomaterials
- Glass properties and applications
- Magnetic Properties and Synthesis of Ferrites
- Advanced Sensor and Energy Harvesting Materials
- Electronic and Structural Properties of Oxides
- Magnetic properties of thin films
- Solid State Laser Technologies
- Electromagnetic wave absorption materials
- Magneto-Optical Properties and Applications
- Solid-state spectroscopy and crystallography
- ZnO doping and properties
- Catalysis and Oxidation Reactions
- Luminescence and Fluorescent Materials
- Magnetic Properties and Applications
- Microwave Dielectric Ceramics Synthesis
- Perovskite Materials and Applications
- GaN-based semiconductor devices and materials
- Acoustic Wave Resonator Technologies
- Terahertz technology and applications
Sage (United Kingdom)
2025
UGC DAE Consortium for Scientific Research
2010-2024
Medi-Caps University
2024
Raja Ramanna Centre for Advanced Technology
2013-2022
Devi Ahilya Vishwavidyalaya
2014-2016
Abstract Nanoparticles, bulk and thin films of NiFe 2 O 4 compounds are studied by micro‐Raman spectroscopy. The effect varying the incident laser power up to 40 mW was in all forms samples. spectra showed a large magnitude red shift line broadening as result high power. It is shown that inverse spinel structure remains robust, no trace laser‐induced oxidation observed. low‐temperature study nanoparticles has also been carried out for elucidating thermal effects due rise temperature maximum...
SmFeO<sub>3</sub>/poly(vinylidene fluoride) composite films exhibit tunable magnetoelectric effects induced by strong strain interactions at the interfaces.
Utilisation of multiferroic BiFeO3 nanoparticles requires that these be embedded in a suitable matrix. We prepared BiFeO3/poly (methyl methacrylate) nanocomposite films with varying volume fraction and investigated their magnetic dielectric properties. The results obtained show exhibit superparamagnetic behaviour films. magnetization was observed to saturate beyond ∼13 kOe for 2.5% 5% BFO composite AC conductivity (∼10−12 Ohm−1cm−1) is also significantly reduced (by four order magnitude)...
Utilization of magnetoelectric effects in multiferroic materials hold great potential to fabricate nonvolatile memory devices with outstanding characteristics. In particular, organic thin memories are favorable because their environment friendly nature, mechanical flexibility, and low fabrication cost. this work, we have demonstrated a room temperature paradigm two level operation by exploiting the nonlinear flexible SmFeO3/P(VDF-TrFE) nanocomposite films using ferroelectric polymer...
The morphological and size distribution change of Nd:Y<sub>2</sub>O<sub>3</sub> nanoparticles due to calcination temperature influences the transparency ceramic pellets.
Tuning of the oxygen vacancy channels (OVCs) ordering is crucial to control ionic conduction, which has much promise in energy materials and memory devices. Brownmillerite (BM) oxides have been proven be an ideal playground for exploring modulation OVCs through external stimuli. In BM-SrCoO2.5 thin films, we observed that in-plane compressive strain promotes horizontal OVCs, while tensile facilitates vertical OVCs. The can also made electric biasing utilizing piezo-strain. selective...
Abstract Phase transitions in transition metal oxides, particularly those involving charge, orbital, and spin order, give rise to emergent electronic magnetic phenomena, making these materials critical the advancement of spintronics quantum technologies. SrRuO 3 (SRO) LaNiO (LNO) have distinct physical properties. SRO is characterized by its metallic conductivity, ferromagnetism, strong polarization, while LNO exhibits pronounced electron correlations sensitivity structural distortion....
We present our study of the effect substrate induced strain on La5/8 − yPryCa3/8MnO3 (y = 0.45) thin films grown LaAlO3, NdGaO3 and SrTiO3 substrates that show large scale phase separation. It is observed unstrained behave quite similarly to bulk material but strained melting insulating metallic at low temperatures. However, separation metastable glass-like state in all despite differences strain. The measurements resistivity as a function temperature under cooling heating unequal field...
In this letter, studies on structural transitions and the effect of electric field poling magnetoelectric (ME) properties in 0.65Pb (Mg1/3Nb2/3)O3-0.35PbTiO3 (PMN-PT)/NiFe2O4 (NFO) nanocomposites are reported. The composite illustrates dramatic changes NFO crystal structure across ferroelectric transition temperature [Curie (Tc) ∼ 450 K] PMN-PT, while pure does not exhibit any change range (300 K–650 K). Synchrotron based X-ray diffraction analysis revealed splitting peaks Tc PMN-PT...
The influence of La and Nd co‐substitution on structure, electric magnetic properties epitaxial thin films BiFeO 3 (BFO) was examined. We demonstrate structural phase transition in co‐doped BFO using Raman spectroscopy. Based group theoretical analysis the number symmetry lines, we provide strong experimental evidence that structure has been changed from rhombohedral to monoclinic due co‐doping BFO. change also reflected morphology these films. Room temperature hysteresis curves showed doped...
The coupling of phonon with spin in strain coupled magnetoelectric NiFe2O4 (NFO)/0.65Pb(Mg1/3Nb2/3)O3–0.35PbTiO3 (PMN-PT) composite was investigated by temperature-dependent Raman spectroscopy and magnetic measurements the range 30–350 °C. Pure NFO shows usual ferromagnetic behaviour this temperature while NFO/PMN-PT show dramatic change moment across ferroelectric transition (Tc ∼ 180 °C) PMN-PT. evolution spectra for significant anomalies T-site (Fe-O) O-site (Ni/Fe-O) modes at is...
Self-assembled epitaxial nanostructures of NiFe2O4 ferrimagnetic material were grown in the matrix CaCu3Ti4O12 dielectric by pulsed laser deposition. SEM and AFM studies showed self-assembly vertical columnar structures CaCu3Ti4O12. The substrate induced strain this nanocomposite system is insignificant on rods governs state. Further, state switched from tension to compression as a result geometry. A change magnetization composite film observed around 100 K where constant also sudden change.