Temperature-Pressure Phase Diagram of Relaxor Ferroelectric Pb(Mg1/3Nb2/3)O3

被引：1

作者：

Deguchi, Kiyoshi ^{[1
]}

Hiroshima, Mika ^{[1
]}

Kasatani, Hirofumi ^{[1
]}

Ohwa, Hidehiro ^{[2
]}

Nakamoto, Yuki ^{[3
]}

Ahart, Muhtar ^{[4
]}

Yamanaka, Takamitsu ^{[3
,4
]}

机构：

[1] Shizuoka Inst Sci & Technol, Fac Sci & Technol, Dept Mat & Life Sci, Shizuoka 4370032, Japan

[2] Gifu Univ, Fac Engn, Dept Elect Elect & Comp Engn, Gifu 5011193, Japan

[3] Osaka Univ, Grad Sch Engn Sci, Ctr Sci & Technol Extreme Condit, KYOKUGEN, Toyonaka, Osaka 5608531, Japan

[4] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2016年 / 85卷 / 01期

关键词：

BEHAVIOR;

D O I：

10.7566/JPSJ.85.014701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effects of hydrostatic pressure of up to 2.7 GPa on the dielectric constant and pyroelectric charge of Pb(Mg1/3Nb2/3)O-3 single crystal were investigated. In addition to the broad and frequency-dependent dielectric anomaly of the relaxor state, a distinct secondary dielectric anomaly was found at pressures higher than approximately 0.7 GPa. This new dielectric anomaly was confirmed consistently by isothermal and isobaric measurements. The pressure dependences of the peak temperature of the dielectric constant, the freezing temperature, and the temperature at which the secondary dielectric anomaly disappeared (T-a) were investigated. The Ta line in the temperature-pressure phase diagram represents the phase boundary of the pressure-induced structural phase transition.

引用

页数：5

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