File | |
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
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Title |
Study of Phase Transition on Rochelle Salt Using Acoustic Emission
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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
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Creator |
Masuda Shiro
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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
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Volume | 30 |
Start Page | 43 |
End Page | 51 |
Journal Identifire |
ISSN 05869943
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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
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