Dielectric and pyroelectric studies on the Ba1-3aBi2aTiO3 classical and relaxor ferroelectric ceramics
Dielectric and pyroelectric studies on the Ba1-3aBi2aTiO3 classical and relaxor ferroelectric ceramics
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DOI：
10.1016/s1293-2558(03)00180-8
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发表时间：
2003-09-01
影响因子：
3.5
通讯作者：
Ravez, J
中科院分区：
文献类型：
--
作者：
Bahri, F;Khemakhem, H;Ravez, J
对 BaTiO3、Ba1-3aBi2aTiO3（0 < a < 0.117）衍生的固溶体进行了 80-500 K 温度范围内的低频介电研究。相对介电常数实部的温度和频率变化表现出两种不同的行为，具体取决于替代率。在大约从 0 到 0.03 的范围内观察到经典的铁电行为。然而，对于较高的 a 值，会出现松弛行为。 A 位点中 Ba2+ 被 Bi3+ 取代后，T-C 显着降低。介电研究通过热释电研究得到证实。 (C) 2003 年由科学与医学版 Elsevier SAS 出版。
Low frequency dielectric studies in the temperature range 80-500 K were performed on the solid solution derived from BaTiO3, Ba1-3aBi2aTiO3 with 0 < a < 0.117. The temperature and frequency variations of the real part of the relative permittivity show two different behaviors, depending upon the substitution rate. A classical ferroelectric behavior was observed for a varying approximately from 0 to 0.03. However, a relaxor behavior appears for higher values of a. The replacement of Ba2+ by Bi3+ in the A site shows a remarkable decrease of T-C. The dielectric studies were confirmed by pyroelectric study. (C) 2003 Published by Editions scientifiques et medicales Elsevier SAS.