A5101868887- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Magnetic properties of thin films
- Physics of Superconductivity and Magnetism
- Electronic and Structural Properties of Oxides
- Multiferroics and related materials
- Magnetic Properties of Alloys
- Nuclear materials and radiation effects
- Luminescence Properties of Advanced Materials
- Magnetic Properties and Applications
- Semiconductor materials and devices
- Magnetic Properties and Synthesis of Ferrites
- 2D Materials and Applications
- Ferroelectric and Negative Capacitance Devices
- ZnO doping and properties
- nanoparticles nucleation surface interactions
- MXene and MAX Phase Materials
- Theoretical and Computational Physics
- Ga2O3 and related materials
- Semiconductor materials and interfaces
- Mass Spectrometry Techniques and Applications
- Chalcogenide Semiconductor Thin Films
- Nuclear Materials and Properties
- Quantum Dots Synthesis And Properties
- Crystal Structures and Properties
Bhabha Atomic Research Centre
2016-2025
Homi Bhabha National Institute
2020-2025
Raja Ramanna Centre for Advanced Technology
2022-2024
UGC DAE Consortium for Scientific Research
2016-2024
Panjab University
2021
University of Delhi
2021
Rutherford Appleton Laboratory
2020
Leipzig University
2016
Development of hybrid magnetic nanoparticles as decorporating agents for uranyl ions and similar rare earth alkaline ions.
Yttrium doped hafnia (Y-doped HfO2) thin film based devices have recently shown their potential for advanced nanoelectronics applications. Here, we report the fabrication of device-grade Hf(1−x)YxO2 (x = 0, 0.10, and 0.20) films on both Si(100) platinized silicon substrates using an optimized Nd:YAG pulsed laser deposition system, wherein detailed structural compositional characterizations were carried out to establish a structural-dielectric property correlation. The capacitance-frequency...
Epitaxial NiO layers have been grown on GaN templates with the out-of-plane and in-plane epitaxial relationship of [111]NiO ǁ [0001]GaN [-110]NiO [-12-10]GaN, respectively. The layer is found to two domain structures oriented along [111] direction an rotation ∼60° respect each other. A type-II band alignment valence conduction offset values 1.4 ± 0.1 eV 1.9 eV, respectively, has obtained from photoemission spectroscopy. determined are helpful determine charge transport recombination...
Correlation of the interface structure and magnetization Gd/Co multilayers on annealing at 400 °C.
Using spin-dependent specular and off-specular polarized neutron reflectivity (PNR), we report the observation of a twisted helical magnetic structure with planar 2\ensuremath{\pi} domain walls (DWs) highly correlated domains in Gd/Co multilayer. Specular PNR polarization analysis reveals formation DWs below compensation temperature (${T}_{\mathrm{comp}}$), resulting negative exchange bias this system. Off-specular spin showed development inhomogeneities (increase roughness) for central part...
Abstract The experimental evidence of the exchange bias (EB) effect in epitaxial heterostructures ferromagnetic La 0.67 Sr 0.33 MnO 3 (LSMO) and paramagnetic LaNiO (LNO) grown on MgO(001) substrates is reported. macroscopic magnetization measurements show a clear indication EB LNO/LSMO LSMO/LNO/LSMO heterostructures. strength coupling rapidly reduces as temperature increased almost vanishes above 50 K. Using spin dependent polarized neutron reflectometry (PNR) detailed depth profiles are...
We have deposited LaNiO3 thin films on LaAlO3 (001), SrTiO3 and Si (001) substrates using the pulsed laser deposition technique. Depositions were carried out at various substrate temperatures ranging from 0 to 800 °C. The effects of lattice mismatch structural disorder transport properties different are reported. X-ray diffraction confirms a highly c-axis oriented growth all 600 °C, while lower amorphous. Emergence new Raman mode indicates symmetry lowering in crystalline films. Hardening...
The effect of the stacking sequence on magnetic and superconducting properties in La0.67Sr0.33MnO3 (LSMO)/YBa2Cu3O7-δ (YBCO) LSMO/SrTiO3/YBCO heterostructures, which consequently affected proximity (MPE), was investigated using spin-polarized neutron reflectivity experiments. results established intrinsic nature MPE its correlation with sequence-dependent these oxide heterostructure systems. We found an increase transition temperature (Tsc) magnetization for both heterostructures as compared...
Structural properties of Indian metamict single zircon crystals are studied by comparing their with those synthetic synthesized via solid‐state reaction method, which serves as the standard. X‐Ray diffraction (XRD) data reveal changes in lattice parameters and presence strain, metamictization, etc. It is found that degree crystallinity ≈63.8% indicating simultaneous crystalline disordered regions. These likely due to several radioactive/nonradioactive elements. The such elements observed...
The distortion of corner-sharing octahedra in isovalent perovskite transition-metal oxide interfaces have proven to be an excellent way tailor the electronic and magnetic properties their heterostructures. Combining depth-dependent characterization using polarized neutron reflectivity (PNR) theoretical calculations (density functional theory), we report interface-driven exchange interactions due modification octahedral rotations at...
The effect of strain on the metal-insulator transition (MIT) epitaxial NdNiO3 film c-axis oriented LaAlO3 single crystal, grown by pulsed laser deposition, has been investigated. Swift heavy ion irradiation was used to vary state deposited film. X-ray diffraction confirmed a systematic fluence dependent rise in in-plane compressive strain, while maintaining epitaxy This found reduce MIT temperature, which finally disappeared for highest irradiation. is also corroborated with Raman...
Rare-earth (RE)/transition metal (TM) ferromagnetic heterostructures with competing interfacial coupling and Zeeman energy provide a rich ground to study different phase states as function of magnetic field temperature. The interface morphology knob in these RE/TM provides an excellent opportunity engineer the macroscopic response by tuning dependent microscopic interactions between layers. We have investigated driven structure properties Gd/Co multilayer. multilayer was controlled annealing...
The effect of ion irradiation on the proximity in YBa2Cu3O7−δ/La0.67Sr0.33MnO3 and YBa2Cu3O7−δ/SrTiO3/La0.67Sr0.33MnO3 heterostructures has been investigated using spin-polarized neutron reflectivity experiments. We demonstrate that magnetization ferromagnetic (La0.67Sr0.33MnO3) layer at interface is correlated with suppression superconductivity YBa2Cu3O7−δ after irradiation, while structure remains intact. evolution interfacial studied as a function temperature for both irradiated shows...