Hydrogen Bonding. Pressure Effect on Hydrogen-Bond Ferroelectrics KH2PO4 and KD2PO4.
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- ENDO Shoichi
- Research Center for Materials Science at Fxtreme Conditions, Osaka University
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- DEGUCHI Kiyoshi
- Department of Materials Science, Shizuoka Institute of Science and Technology
Bibliographic Information
- Other Title
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- 水素結合 水素結合型強誘電体KH2PO4とKD2PO4の圧力効果
- スイソ ケツゴウガタ キョウ ユウデンタイ KH2PO4 ト KD2PO4 ノ アツリョク コウカ
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Abstract
Temperature dependences of the dielectric constant along the ferroelectric c-axis have been measured at various pressures up to 7. 9 GPa in KH2PO4 and KD2PO4. The vanishing of the ferroelectric state has been observed at 1. 7 GPa in KH2PO4 and at 6. 3 GPa in KD2PO4. The Curie constant C of KH2PO4 is almost independent of pressure. On the other hand, that of KD2PO4 above 4 GPa decreases about three fourths of that at atmospheric pressure. The crossover of the order-disorder type to the displacive one under high pressure is discussed on the mechanism of phase transition to explain these experimental results of KD2PO4.
Journal
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- The Review of High Pressure Science and Technology
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The Review of High Pressure Science and Technology 10 (1), 12-17, 2000
The Japan Society of High Pressure Science and Technology
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Keywords
Details 詳細情報について
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- CRID
- 1390001204380938368
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- NII Article ID
- 10004668449
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- NII Book ID
- AN10452913
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- COI
- 1:CAS:528:DC%2BD3cXis1aisLo%3D
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- ISSN
- 13481940
- 0917639X
- http://id.crossref.org/issn/0917639X
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- NDL BIB ID
- 5285180
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed