A5053115159- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- Advanced Condensed Matter Physics
- Ferroelectric and Piezoelectric Materials
- X-ray Diffraction in Crystallography
- Physics of Superconductivity and Magnetism
- Crystallization and Solubility Studies
- High Entropy Alloys Studies
- Solid-state spectroscopy and crystallography
- Magnetic properties of thin films
- High-Temperature Coating Behaviors
- Dielectric properties of ceramics
- Topological Materials and Phenomena
- Graphene research and applications
- Superconducting Materials and Applications
- Nonlinear Optical Materials Research
- Crystallography and molecular interactions
- Thermal Expansion and Ionic Conductivity
- Advanced materials and composites
- Nuclear materials and radiation effects
- Quantum and electron transport phenomena
- High-pressure geophysics and materials
- Electronic and Structural Properties of Oxides
- Solidification and crystal growth phenomena
- Theoretical and Computational Physics
Thapar Institute of Engineering & Technology
2022-2024
Indian Institute of Science Bangalore
2016-2022
Max Planck Institute for Chemical Physics of Solids
2021-2022
Institute for Basic Science
2019
Jadavpur University
2008
Magnetic and dielectric properties of the double perovskite Ho2NiMnO6 are reported. The compound is synthesized by nitrate route found to crystallize in monoclinic P21/n space group. Lattice parameters obtained refining powder x-ray diffraction data are; a = 5.218(2) Å, b 5.543(2) c 7.480(3) Å angle [Formula: see text](4). A phase transition observed at text] K temperature-dependent magnetization curve, M(T). inverse magnetic susceptibility, (1/[Formula: text]) fits reasonably well with...
The results of a single-crystal x-ray-diffraction study the evolution crystal structures $\mathrm{V}{\mathrm{I}}_{3}$ with temperature an emphasis on phase transitions are presented. Some related specific-heat and magnetization data included. existence room-temperature trigonal structure $R\overline{3}$ (148) has been confirmed. Upon cooling, undergoes structural transition to monoclinic at ${T}_{\mathrm{s}}\ensuremath{\sim}79\phantom{\rule{0.16em}{0ex}}\mathrm{K}$. ${T}_{\mathrm{s}}$ is...
Magnetic topological insulators provide an important platform for realizing several exotic quantum phenomena, such as the axion insulating state and anomalous Hall effect, owing to interplay between topology magnetism. MnBi4Te7 is a two-dimensional Z2 antiferromagnetic (AFM) insulator with Néel temperature of ∼13 K. In AFM materials, effect (THE) observed existence nontrivial spin structures. A material noncollinearity that develops in phase rather than at onset order particularly important....
We have carried out dielectric and transport measurements in NdFe1-xMnxO3 (0 ≤ x 1) series of compounds studied the variation activation energy due to a change Mn concentration. Despite similar ionic radii Mn(3+) Fe(3+), large is observed lattice parameters crossover from dynamic static Jahn-Teller distortion discernible. The Fe/Mn-O-Fe/Mn bond angle on ab plane shows an anomalous with doping. With increase content, decreases until = 0.6; beyond this, it starts rising 0.8 again falls after...
The advent of unique high-entropy oxides has sparked substantial research interest due to their exceptional functional properties, which often surpass the mere sum constituent elements' characteristics. This paper introduces a complex spinel oxide with composition (Ni0.2Mg0.2Co0.2Cu0.2Zn0.2)(Mn0.66Fe0.66Cr0.66)O4. We performed comprehensive structural (x-ray and neutron diffraction), microstructural, magnetic, local electronic structure investigations on this material. Despite material's...
Oxide materials exhibit several structural, magnetic, and electronic properties. Their stability under ambient conditions, easy synthesis, high transition temperatures provide such systems with an ideal ground for realizing topological properties real-life technological applications. However, experimental evidence of states in oxide is rare. In this paper, we have synthesized single crystals double perovskite ${\mathrm{Sr}}_{2}{\mathrm{FeMoO}}_{6}$ revealed its nature by investigating We...
Traditionally, lead and heavy metal containing inorganic oxides dominate the area of ferroelectricity. Although, recently, lightweight non-toxic organic ferroelectrics have emerged as excellent alternatives, achieving higher temperature up to which ferroelectric phase can persist has remained a challenge. Moreover, only few those are single-component molecular were discovered upon revisiting their crystal structures. Here we report novel phenanthroimidazole derivative, not displays notable...
The critical behavior at the ferromagnetic to paramagnetic phase transition of a Griffiths ferromagnet, Ho2NiMnO6, is studied using modified Arrott plot, Kouvel-Fisher, and isotherm analysis. Here, we report second-order conclude from estimated exponents that it unusual do not belong conventional universality classes. However, they obey scaling relationships, which indicates renormalization interactions around temperature. presence in system accounts for observed.
In insulators, the longitudinal resistivity becomes infinitely large at zero temperature. For classic Hall conductivity same time. However, there are special systems, such as two-dimensional quantum isolators, in which a more complex scenario is observed high magnetic fields. Here, we report experimental evidence for quasi-quantized insulator limit of three-dimensional semimetal SrSi2. Our measurements reveal field-range, diverges with decreasing temperature, while approaches value that...
Abstract In this study, we investigated the magnetic ordering and underlying mechanism of Griffiths phase, observed in Ho 2 NiMnO 6 through AC susceptibility measurements. Our results indicate that transition around 86 K corresponds to a paramagnetic ferromagnetic characterized by classical ordering. Notably, nonlinear measurements revealed existence clusters within background well above temperature, establishing as origin Griffiths-like phase Ni/Mn sublattice . study on system provides...