High dielectric permittivity in AFe1/2B1/2O3 nonferroelectric perovskite ceramics (A=Ba, Sr, Ca;: B=Nb, Ta, Sb)
High dielectric permittivity in AFe1/2B1/2O3 nonferroelectric perovskite ceramics (A=Ba, Sr, Ca;: B=Nb, Ta, Sb)
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DOI：
10.1063/1.1558205
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发表时间：
2003-04-01
影响因子：
3.2
通讯作者：
Jastrabik, L
中科院分区：
文献类型：
--
作者：
Raevski, IP;Prosandeev, SA;Jastrabik, L
合成了AFe（1/2）B（1/2）O（3）（A=Ba，Sr，Ca; B=Nb，Ta，Sb）陶瓷，测量了不同频率下的介电常数随温度的变化。所获得的实验数据表明，在很宽的温度区间内，介电常数非常高的值，这是所谓的高k材料所固有的。这些数据的分析建立了麦克斯韦-瓦格纳机制作为观察到的现象的主要来源。(C)2003年，美国物理学会。
AFe(1/2)B(1/2)O(3)(A=Ba, Sr, Ca; B=Nb, Ta, Sb) ceramics were synthesized and temperature dependences of dielectric permittivity were measured at different frequencies. The experimental data obtained show very high values of dielectric permittivity in a wide temperature interval that is inherent to so-called high-k materials. Analyses of these data establish a Maxwell-Wagner mechanism as a main source for the phenomenon observed. (C) 2003 American Institute of Physics.