Phenomenological Approach to the Critical Slowing Down in Pyridinium Tetrafluoroborate Single Crystals

被引：1

作者：

Iwata, Makoto ^{[1
]}

Ninoseki, Kenta ^{[1
]}

Odani, Shunsuke ^{[1
]}

Takikawa, Yoshinori ^{[1
]}

机构：

[1] Nagoya Inst Technol, Grad Sch Engn, Dept Phys Sci & Engn, Nagoya, Aichi 4668555, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2018年 / 87卷 / 12期

关键词：

PHASE-TRANSITION; FERROELECTRIC PROPERTIES; DIELECTRIC-RELAXATION; LANDAU THEORY; HIGH-PRESSURE; DISPERSION; DYNAMICS;

D O I：

10.7566/JPSJ.87.124708

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dielectric dispersion in pyridinium tetrafluoroborate single crystals has been measured in the frequency range from 300 Hz to 10 MHz. In the vicinity of the paraelectrio-to-ferroelectric phase transition temperature T-cl, dielectric critical slowing down has been observed, where one Debye-type relaxation mode in the paraelectric phase splits into two Debye-type relaxation modes below T-cl. Our experimental data for the phase transition at T-cl were analyzed on the basis of the Landau-type phenomenology.

引用

页数：6

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