A5050634873- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- Magnetic and transport properties of perovskites and related materials
- Microwave Dielectric Ceramics Synthesis
- Magnetic Properties and Synthesis of Ferrites
- Dielectric properties of ceramics
- Glass properties and applications
- ZnO doping and properties
- Electromagnetic wave absorption materials
- Gas Sensing Nanomaterials and Sensors
- Luminescence Properties of Advanced Materials
- Copper-based nanomaterials and applications
- Acoustic Wave Resonator Technologies
- Magneto-Optical Properties and Applications
- Electronic and Structural Properties of Oxides
- Quantum Dots Synthesis And Properties
- Transition Metal Oxide Nanomaterials
- Chalcogenide Semiconductor Thin Films
- Advancements in Solid Oxide Fuel Cells
- Phase-change materials and chalcogenides
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Iron oxide chemistry and applications
- Nanoparticle-Based Drug Delivery
- Perovskite Materials and Applications
Guru Nanak Dev University
2016-2025
Indian Institute of Management Amritsar
2016-2020
Jawaharlal Nehru University
2008-2012
Indian Institute of Technology Delhi
2005-2012
Bhabha Atomic Research Centre
2012
Thapar Institute of Engineering & Technology
2010
The presence of superlattice reflections and detailed analysis the powder neutron x-ray diffraction data reveals that La rich BLF-PT (BFO0.50–LF0.50)0.50–(PT)0.50 has a ferroelectric rhombohedral crystal structure with space group R3c at ambient condition. Impedance spectroscopy, dielectric spectroscopy is subset impedance ac conductivity measurements were performed in temperature range 483 K ≤ T 573 to probe origin large remnant polarization frequency dependent broad transitions constant...
The glass samples with composition (70B2O3-29Li2O-1Dy2O3)-xBT; x = 0, 10 and 20 weight percent, have been prepared by conventional melt quench technique. dielectric measurements as a function of temperature carried out on these in the frequency range 1 Hz-10 MHz. relaxation characteristics studied analyzing spectroscopy, loss, electric modulus formulation electrical conductivity spectroscopy. It is found that permittivity increases an increase BT content. dependent ac has analyzed using...
Nd1−xPbxFeO3 (x = 0.1–0.3) solid solutions were prepared by aliovalent substitution of Pb2+ at the Nd3+ site using conventional solid-state reaction route. The structural, magnetic and dielectric properties hopping mechanism these are reported. XRD data shows that all samples possessed orthorhombic crystal structures. No impurity phase was found, indicating well within its solubility limit. All exhibited ordering with Mr value decreasing from 2.42 emu/g for x 0.1 sample to 1.79 0.3 sample....
Phase evolution in BaFe10ZnZrO19 (BZFO) and BaFe12O19 (BFO) samples calcined for six hours between 900 °C – 1200 has been studied using Rietveld refinement. The refinement data reveals that BZFO exhibit higher phase complexity comprising a maximum of five Zn-Zr doped BFO, ZnFe2O4, ZrO2, BaZrO3 BaFeO3 phases at 1100 °C. 2 values various vary 1.53 -1.57. co-doped BFO is the dominant these its fractional percentage increases from 63.67 to 75.67 In contrast, lesser only Fe2O3 phases. value...
Magnetoelectric coupling coefficient (α) values of 0.88mV∕cm∕Oe at 200Oe and magnetocapacitive effects are reported in solid-solution BF–LF–PT with large La substitution (50:50 BF). Enhancement magnetic, dielectric, ferroelectric properties is also observed. The solid solution shows relaxor behavior permittivity (∼30000), remnant polarization (∼61μC∕cm2), symmetric but nonsaturating M-H loop Mr∼0.25emu∕g.
Coexistence of both typically ferroelectric (Tc1∼434 K) and frequency dependent broad transitions (650 K≤Tc2≤800 in έ versus T is demonstrated a multiferroic candidate [(Pb0.8La0.2)(Ti0.8Fe0.2)O3]. The sample shows spontaneous magnetization enhancement on electrical poling. We demonstrate clearly that although the transition has no origin ferroelectricity instead driven by corresponding magnetic ordering at ∼650 K, solid solution magnetoelectric coupling due to its pure behavior below 434 K.
This paper deals with a study of Ba0.85Ca0.15−xSrxTi0.9Zr0.1O3 (BCT-BZT-Sr) (x = 0%, 5%, 10% and 15%) polycrystalline ceramics for thermal energy conversion applications using the Olsen cycle. A maximum density 108 kJ/m3 was observed in pristine BCT-BZT cycle operating at 30–90 °C 0–20 kV/cm. Moreover, samples Sr contents (x) 15% display an 179 kJ/m3, 149 200 respectively. The addition almost double over sample under similar conditions. Also, temperature (T)-dependent dynamic hysteresis...
Temperature-dependent ferroelectric behavior in Ba0.85Ca0.15Ti0.9−xFexZr0.1O3 (BCT-BZT-Fe) (x = 0%, 0.5%, 1%) has been investigated. Olsen cycle is used to estimate the thermal energy conversion potential compositions under study. The maximum density of 305 kJ/m3 per obtained for BCT-BZT-Fe (0.5% Fe content) when operated between 30 and 110 °C an electric field 0–3 MV/m. very high small temperature gradient as compared other lead-free materials. A comparison table previously reported...