Effects of Hydrostatic Pressure on the Phase Transition Points of Ferroelectric NH4LiSO4

Hiroyasu Shimizu; Akio Oguri; Naohiko Yasuda; Sanji Fujimoto

doi:10.1143/JPSJ.43.349

Journal of the Physical Society of Japan

Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015

Effects of Hydrostatic Pressure on the Phase Transition Points of Ferroelectric NH₄LiSO₄

Hiroyasu Shimizu, Akio Oguri, Naohiko Yasuda, Sanji Fujimoto

著者情報

ジャーナル認証あり

1977 年 43 巻 1 号 p. 349-350

DOI https://doi.org/10.1143/JPSJ.43.349

詳細

抄録

Effects of hydrostatic pressure on the phase transition points of ferroelectric NH₄LiSO₄ were studied by dielectric measurements at 1 kHz over a temperature range of 0∼210°C and a pressure range up to 2 kbar. The observed pressure coefficients of I–II and II–III phase transition temperatures (186.5°C and 10°C at 1 atm, respectively) were 9.8 deg/kbar and −3.3 deg/kbar, respectively.