Aging-induced dielectric relaxation in barium titanate ceramics
Aging-induced dielectric relaxation in barium titanate ceramics
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DOI：
10.1063/1.2713178
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发表时间：
2007-03
影响因子：
4
通讯作者：
M. M. Ahmad-M.;Koji Yamada;P. Meuffels;R. Waser
中科院分区：
文献类型：
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作者：
M. M. Ahmad-M.;Koji Yamada;P. Meuffels;R. Waser
本文报道了1mol%Mn掺杂BaTiO_3陶瓷的相变和介电性能的时效效应。在铁电状态下老化陶瓷刺激正交-四方和四方-立方相变的电阻，这导致四方相在更宽的温度范围内稳定。老化样品的介电常数表现出色散，与介电损耗弛豫峰附近的100 kHz的频率区域，在对比未老化的。目前的结果进行了讨论，在现有的模型铁电畴稳定。
In this letter the authors report on the aging effect on the phase transitions and dielectric properties of 1mol% Mn-doped BaTiO3 ceramics. Aging the ceramics in the ferroelectric state stimulates a resistance for the orthorhombic-tetragonal and tetragonal-cubic phase transitions, which leads to stabilization of the tetragonal phase over a wider temperature range. The dielectric constant of the aged sample shows dispersion, associated with a dielectric loss relaxation peak near the 100kHz frequency region, in contrast to the unaged one. The present results are discussed in light of the existing models for ferroelectric domain stabilization.