Low-Temperature Dielectric Response of Relaxor Ferroelectrics and Related Disordered Materials

2004 ◽  
Vol 302 (1) ◽  
pp. 241-245
Author(s):  
STANISLAV KAMBA ◽  
VIKTOR BOVTUN ◽  
VICTOR POROKHONSKYY ◽  
ALEXEJ PASHKIN ◽  
MAXIM SAVINOV ◽  
...  
Keyword(s):  
Low Temperature ◽  
Dielectric Response ◽  
Relaxor Ferroelectrics ◽  
Disordered Materials

Phase Evolution and Dielectric Characterization of Lead Nickel Niobate–lead Zirconate Ceramics Prepared from the Hydrothermally Derived Precursors

1999 ◽  
Vol 14 (4) ◽  
pp. 1364-1370 ◽  
Author(s):  
Chung-Hsin Lu ◽  
Wen-Jeng Hwang
Keyword(s):  
Dielectric Response ◽  
Pyrochlore Phase ◽  
Phase Evolution ◽  
Intermediate Compound ◽  
Lead Zirconate ◽  
Relaxor Ferroelectrics ◽  
Dielectric Characterization ◽  
Lead Nickel ◽  
Rich Side

The perovskite compounds with the composition of (1 – x) Pb(Ni1/3Nb2/3)O3 –xPbZrO3 have been successfully prepared from hydrothermally treated precursors. During calcination, the primary intermediate compound is pyrochlore phase in the Pb(Ni1/3Nb2/3)O3-rich composition, while it is PbZrO3 on the PbZrO3-rich side. On calcination at 800 °C, all precursors convert into perovskite phases. In the formed solid solutions, increasing PbZrO3 content results in a rise in the apparent Curie temperature as well as the maximum dielectric permittivity. The Pb(Ni1/3Nb2/3)O3-rich perovskites (x < 0.8) possess the characteristics of relaxor ferroelectrics. With increasing PbZrO3 content, the dielectric response gradually becomes less diffuse and dispersive, reflecting a reduction in the relaxor characteristics of the formed perovskites.

Anisotropic dielectric response of lead zirconate crystals in the terahertz and infrared range at low temperature

2014 ◽  
Vol 87 (10-11) ◽  
pp. 1129-1137 ◽  
Author(s):  
Tetyana Ostapchuk ◽  
Christelle Kadlec ◽  
Petr Kuzel ◽  
Jan Kroupa ◽  
Vladimir Zelezny ◽  
...  
Keyword(s):  
Low Temperature ◽  
Dielectric Response ◽  
Lead Zirconate ◽  
Infrared Range ◽  
Anisotropic Dielectric

Microwave and infrared dielectric response in BaTiO3 based relaxor ferroelectrics

2011 ◽  
Vol 208 (12) ◽  
pp. 2853-2860 ◽  
Author(s):  
Jingji Zhang ◽  
Jiwei Zhai ◽  
Yewen Zhang
Keyword(s):  
Dielectric Response ◽  
Relaxor Ferroelectrics

Low-temperature microwave and THz dielectric response in novel microwave ceramics

2006 ◽  
Vol 26 (10-11) ◽  
pp. 1845-1851 ◽  
Author(s):  
S. Kamba ◽  
D. Noujni ◽  
A. Pashkin ◽  
J. Petzelt ◽  
R.C. Pullar ◽  
...  
Keyword(s):  
Low Temperature ◽  
Dielectric Response ◽  
Microwave Ceramics

Crossover from Glassy to Inhomogeneous-Ferroelectric Nonlinear Dielectric Response in Relaxor Ferroelectrics

2000 ◽  
Vol 84 (25) ◽  
pp. 5892-5895 ◽  
Author(s):  
Vid Bobnar ◽  
Zdravko Kutnjak ◽  
Ras̆a Pirc ◽  
Robert Blinc ◽  
Adrijan Levstik
Keyword(s):  
Dielectric Response ◽  
Relaxor Ferroelectrics ◽  
Nonlinear Dielectric

Investigation of Polarization Mechanism of Relaxor Ferroelectrics

1996 ◽  
Vol 453 ◽  
Author(s):  
Z. -Y. Cheng ◽  
R. S. Katiyar ◽  
Yao Xi
Keyword(s):  
Dielectric Constant ◽  
Low Temperature ◽  
Temperature Dependence ◽  
High Precision ◽  
Relaxor Ferroelectrics ◽  
Dielectric Behavior ◽  
Polar Regions ◽  
Thermally Activated ◽  
Polarization Mechanism ◽  
Constant Maximum

AbstractAddition to thermally activated flips of polar regions in relaxor ferroelectrics, a new polarization mechanism, which originates from the vibrations (breathing) of surface of polar regions, is introduced to explain the dielectric behavior of relaxor ferroelectrics. This new mechanism plays an important role in the dielectric behavior of such materials at low temperature. Based on the above assumption and general dielectric theory, a formula is given to characterize the temperature dependence of the dielectric constant. The correctness of the formula is verified by using it to fit the experimental results of the two typical relaxors. The fitted results show that the method is of high precision and that the temperature of the dielectric constant maximum is decided by the two polarization behavior. It also indicates that the new polarization is a resonance polarization.

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