Quasi-static loops of the dielectric hysteresis for a photosensitive relaxor ferroelectric crystal in the temperature range of the diffuse phase transition

2007 ◽  
Vol 49 (5) ◽  
pp. 930-935
Author(s):  
V. V. Gladkiĭ ◽  
V. A. Kirikov ◽  
E. S. Ivanova ◽  
T. R. Volk
Keyword(s):  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Relaxor Ferroelectric ◽  
Ferroelectric Crystal ◽  
Temperature Range ◽  
Diffuse Phase

ELECTRICAL PROPERTIES OF (Na1/2Bi1/2)1-xCaxTiO3 CERAMICS

2002 ◽  
Vol 16 (27) ◽  
pp. 4175-4187 ◽  
Author(s):  
B. V. BAHUGUNA SARADHI ◽  
K. SRINIVAS ◽  
T. BHIMASANKARAM
Keyword(s):  
Phase Transition ◽  
Dielectric Constant ◽  
Electrical Properties ◽  
Diffuse Phase Transition ◽  
Calcium Concentration ◽  
Bismuth Titanate ◽  
Temperature Range ◽  
Impedance Data ◽  
Higher Temperature ◽  
Diffuse Phase

The frequency (100Hz–1MHz) and temperature (30–575°C) dependence of electrical properties of calcium doped (Ca = 0.01, 0.05, 0.1) sodium bismuth titanate (NBT) was investigated by impedance spectroscopy. The data is used to analyze the effect of calcium concentration on the electrical properties of NBT. The frequency explicit plots of Z′′ versus frequency at various temperatures shows peaks in the higher temperature range (>400°C). The relaxation peaks are affected by the doping. The AC conductivity values are computed from the impedance data. DC conductivity has been measured in the temperature range of 30–400°C. The activation energies have been evaluated from the data. From the studies of dielectric constant as a function of temperature, it is observed that diffuse phase transition (DPT) is exhibited in these samples.

scholarly journals Study of diffuse phase transition and relaxor ferroelectric behavior of Ba0.97Bi0.02Ti0.9Zr0.05Nb0.04O3 ceramic

RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2412-2425 ◽  
Author(s):  
Z. Raddaoui ◽  
S. El Kossi ◽  
J. Dhahri ◽  
N. Abdelmoula ◽  
K. Taibi
Keyword(s):  
Phase Transition ◽  
Molten Salt ◽  
Structural Property ◽  
Diffuse Phase Transition ◽  
Polycrystalline Sample ◽  
Relaxor Ferroelectric ◽  
Molten Salt Method ◽  
Ferroelectric Behavior ◽  
Diffuse Phase

In the present work, structural property of polycrystalline sample Ba0.97Bi0.02Ti0.9Zr0.05Nb0.04O3 (BBTZN) prepared by a molten-salt method were investigated.

Large electrocaloric effect over a wide temperature range in BaTiO3-modified lead-free ceramics

2019 ◽  
Vol 7 (5) ◽  
pp. 1353-1358 ◽  
Author(s):  
Luo Zhao ◽  
Xiaoqin Ke ◽  
Zhijian Zhou ◽  
Xiaoqi Liao ◽  
Junjie Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
Wide Temperature Range ◽  
Diffuse Phase Transition ◽  
Lead Free ◽  
Broad Temperature Range ◽  
Electrocaloric Effect ◽  
Temperature Range ◽  
Lead Free Ceramics ◽  
Diffuse Phase

BT-13CH exhibits a large electrocaloric effect over a broad temperature range because of multiphase coexistence (MPC) with diffuse phase transition (DPT) character.

Diffuse phase transition in Ba5YTi3−xZrxNb7O30 ferroelectrics

2002 ◽  
Vol 74 (2) ◽  
pp. 113-120 ◽  
Author(s):  
N.K. Singh ◽  
R.N.P. Choudhary ◽  
A. Panigrahi
Keyword(s):  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Diffuse Phase
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