アコースティックエミッションによるロッシェル塩の相転移の研究

島根大学教育学部紀要. 自然科学 Volume 30 Page 43-51 published_at 1996-12-27
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Title
アコースティックエミッションによるロッシェル塩の相転移の研究
Title
Study of Phase Transition on Rochelle Salt Using Acoustic Emission
Title Transcription
アコースティック エミッション ニヨル ロッシェルエン ノ ソウテンイ ノ ケンキュウ
Creator
Masuda Shiro
Source Title
島根大学教育学部紀要. 自然科学
Memoirs of the Faculty of Education, Shimane University. Natural science
Volume 30
Start Page 43
End Page 51
Journal Identifire
ISSN 05869943
Descriptions
Acoustic emissions(AE)induced by eiectric fieids have been investigated in a temperature range of 240~310K on single crystals of ferroelectric Rochelle salts. AE count rate was measured under ac electric fieids of a wide frequency range of 0.0125Hz~10kHz, and it was simultaneously measured with dielectric constants or D-E hysteresis loops.In a weak electric feild, the AE count rate diverges at the two transition temperatures of Tci=255K and Tcu=297K; the behavior quite resenbles that of the dielectric constants. In a strong electric field, on the other hand, the AE count rate increases only in the ferroelectric phase just like the befavior of the spontaneous polarization. It is found that the AE method is a powerful tool for investigation of such ferroelectric phase transitions.
Keywords:Acoustic Emission(AE), Rochelle salt, Ferroelectrics, Phase transition.
Language
jpn
Resource Type departmental bulletin paper
Publisher
島根大学教育学部
The Faculty of Education Shimane University
Date of Issued 1996-12-27
Access Rights open access
Relation
[NCID] AN00107941