Dielectric Critical Slowing-Down in Ferroelectric (CH3NHCH2COOH)3·CaCl2
Dielectric Critical Slowing-Down in Ferroelectric (CH3NHCH2COOH)3·CaCl2
复制标题
铁电材料的介电临界减速 (CH3NHCH2COOH)3·CaCl2
DOI：
10.1143/jpsj.52.1897
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发表时间：
1983
影响因子：
1.7
通讯作者：
Kuninobu Tanaka
中科院分区：
文献类型：
--
作者：
K. Deguchi;Noriari Aramaki;E. Nakamura;Kuninobu Tanaka
测定了（CH3NHCH2COOH）3 ·CaCl2和（CH3NDCH2COOD）3 ·CaCl2的复介电常数.在居里温度范围内，在104 Hz和109 Hz之间。没有明显的同位素效应被发现在复杂的介电常数以及居里温度。在约100 MHz以上观察到德拜型的介电色散，其显示出临界慢化。讨论了所观察到的临界慢化与先前报道的光学声子软化之间的关系。
Complex dielectric constants of (CH 3 NHCH 2 COOH) 3 ·CaCl 2 and (CH 3 NDCH 2 COOD) 3 ·CaCl 2 have been measured. between 10 4 Hz and 10 9 Hz in the Curie temperature region. No appreciable isotope effect was found in the complex dielectric constants as well as in the Curie temperature. Dielectric dispersion of the Debye type which showed a critical slowing-down was observed above about 100 MHz. Discussion was made of the relation between the observed critical slowing-down and the softening of the optical phonon reported previously.