Constructing phase boundary in AgNbO3 antiferroelectrics: pathway simultaneously achieving high energy density and efficiency

N Luo, K Han, MJ Cabral, X Liao, S Zhang… - Nature …, 2020 - nature.com
Dielectric capacitors with high energy storage density (W rec) and efficiency (η) are in great
demand for high/pulsed power electronic systems, but the state-of-the-art lead-free dielectric …

Perspective on emerging views on microscopic origin of relaxor behavior

A Pramanick, S Nayak - Journal of Materials Research, 2021 - Springer
Relaxors are complex oxide ferroelectrics that are of interest because of their attractive
dielectric and electromechanical properties. A broad frequency-dependent dielectric …

Local structural mechanism for phase transition and ferroelectric polarization in the mixed oxide

J Kong, J Liu, F Marlton, MRV Jørgensen, A Pramanick - Physical Review B, 2021 - APS
(K x Na 1− x) NbO 3 (KNN) and its solid solutions are considered as potential alternatives to
traditional Pb-based piezoelectric materials. Recent investigations indicated that the local …

Dynamical origins of weakly coupled relaxor behavior in Sn-doped

A Pramanick, S Nayak, T Egami, W Dmowski… - Physical Review B, 2021 - APS
The peculiar characteristics of relaxors, viz., a frequency-dependent dielectric permittivity
peak and good functional properties (dielectric, electromechanical, electrocaloric, etc.), are …

Enhanced dielectric, thermal stability, and energy storage properties in compositionally engineered lead-free ceramics at morphotropic phase boundary

RL Nayak, SS Dash, Y Zhang, MPK Sahoo - Ceramics International, 2021 - Elsevier
Structural inhomogeneity at morphotropic phase boundary (MPB) offers a novel paradigm to
explore and modulate the physical properties of dielectric materials to design next …

Morphotropic phase boundary evolution with synergistic effect of sintering temperature to improve electrocaloric and energy storage performances of lead-free Ba0 …

S Sharma, R Nandan, P Malhotra, S Kumar… - Journal of Energy …, 2024 - Elsevier
The designing of lead-free ferroelectric ceramics for application in environment-friendly
efficient electrocaloric cooling and energy storage devices is still challenging and need to be …

Yocto Energy Assisted Ternary Ferroelectric Barium Tin Calcium Titanate for Energy Applications

V Khade, AB Thirumalasetty, VL Mathe… - Sensors and Actuators A …, 2024 - Elsevier
Piezoelectric materials and its flexible composite have garnered interest owing to their
straightforward synthesis, mechanical flexibility, and ease of customization, hence can be for …

Broad Distribution of Local Polar States Generates Large Electrothermal Properties in Pb-Free Relaxor Ferroelectrics

FP Marlton, S Nayak, S Venkateshwarlu… - Chemistry of …, 2021 - ACS Publications
Electrothermal energy conversion provides attractive solutions for global energy
management, such as energy harvesting from waste heat using pyroelectric energy …

Large electrocaloric effect and wide working area in the transition from ferroelectric to nanodomains

H Feng, M Hao, G Wu, Y Zheng, L Yang… - Journal of the …, 2024 - Wiley Online Library
A large adiabatic temperature change along with a wide operating temperature region is
usually required for the electrocaloric materials to fulfill their refrigeration function. In …

Influence of Grain-Growth Inhibitors on Modified (Ba,Sr)(Sn,Ti)O3 for Electrocaloric Application

Z Li, C Molin, SE Gebhardt - Materials, 2024 - mdpi.com
The paper reports on effect of grain-growth inhibitors MgO, Y2O3 and MnCO3 as well as Ca
modification on the microstructure, dielectric, ferroelectric and electrocaloric (EC) properties …