Dielectric Dispersion, Diffuse Phase Transition, and Electrical Properties of BCT–BZT Ceramics Sintered at a Low-Temperature

2015 ◽  
Vol 44 (8) ◽  
pp. 2890-2897 ◽  
Author(s):  
Yongshang Tian ◽  
Yansheng Gong ◽  
Dawei Meng ◽  
Yuanjian Li ◽  
Boya Kuang
Keyword(s):  
Phase Transition ◽  
Electrical Properties ◽  
Low Temperature ◽  
Diffuse Phase Transition ◽  
Dielectric Dispersion ◽  
Diffuse Phase

Structure and Electrical Properties of Pb(Ni1/3Nb2/3)O3-Pb(Zr/Ti)O3 Relaxors

2007 ◽  
Vol 336-338 ◽  
pp. 30-32
Author(s):  
Jin Song Pan ◽  
Xiao Wen Zhang
Keyword(s):  
Phase Transition ◽  
Electrical Properties ◽  
Mixed Oxide ◽  
Diffuse Phase Transition ◽  
Ferroelectric Properties ◽  
Frequency Dispersion ◽  
Diffuse Phase

Ceramics with the type of 0.50Pb(Ni1/3Nb2/3)O3-0.15PbZrO3-0.35PbTiO3 were synthesized by conventional mixed-oxide technique. The dielectric and ferroelectric properties of this composition were investigated in detail. Frequency dispersion and diffuse phase transition were observed in the dielectric behaviors. The revealed electrical properties are εm = 22388, Pr = 21.449 μC/cm2 and Ec = 5.191 kV/cm. XRD experiments demonstrate that this composition is within the MPB region, which may help to explain the super electrical properties discussed in this study.

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 Effects of sintering temperature on structure and electrical properties of (Na0.48k0.473Li0.04Sr0.007)(Nb0.883Ta0.05Sb0.06Ti0.007)O3 piezoelectric ceramics

2021 ◽  
Vol 15 (1) ◽  
pp. 79-86
Author(s):  
Cheng-Shong Hong ◽  
Yi-Tian Hong
Keyword(s):  
Phase Transition ◽  
Electrical Properties ◽  
Diffuse Phase Transition ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Piezoelectric Ceramics ◽  
Polymorphic Phase Transition ◽  
Dielectric And Piezoelectric Properties ◽  
Diffuse Phase

In this study, the effects of sintering temperature on microstructure, dielectric and piezoelectric properties are investigated for the non-stoichiometric (Na0.48K0.473Li0.04Sr0.007)(Nb0.883Ta0.05Sb0.06Ti0.007)O3 (NKLNTSST) piezoelectric ceramics. The results suggest that the piezoelectric properties are enhanced owing to the more normal ferroelectric characteristics, higher density, more uniform grains and presence of polymorphic phase transition regions, which are observed with an increase in the sintering temperature up to 1080?C. The piezoelectric properties are weakened owing to the larger degree of diffuse phase transition and more cationoxygen-vacancy pairs with an increase in the sintering temperature above 1080?C. The best piezoelectric properties including kp = 40%, d33 = 288 pC/N, ?max = 72.12, loss = 2.57%, Ec = 13.45 kV/cm and Pr = 10.23 ?C/cm2 are obtained at the sintering temperature of 1080?C.

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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