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硫酸アンモニウムの相転移 : フェリ的強誘電性
| Title: | 硫酸アンモニウムの相転移 : フェリ的強誘電性 |
| Other Titles: | Phase transition in ammonium sulfate : ferrielectric nature |
| Authors: | 塩崎, 洋一1 Browse this author | | 小野寺, 彰2 Browse this author →KAKEN DB |
| Authors(alt): | SHIOZAKI, Yoichi1 | | ONODERA, Akira2 |
| Issue Date: | 1983 |
| Publisher: | 日本結晶学会 |
| Journal Title: | 日本結晶学会誌 |
| Volume: | 25 |
| Issue: | 4 |
| Start Page: | 203 |
| End Page: | 211 |
| Publisher DOI: | 10.5940/jcrsj.25.203 |
| Abstract: | Ferrielectric behaviour in ammonium sulfate has been studied by means of two methods. One of them is measurements of the temperature dependence of X-ray Bragg reflection intensities, and a qualitative interpretation of them was made. It is suggested that there are two kinds of independent order parameters. The other is crystal structure analyses of solid solutions (NH4) 2 (1-x) R 2x SO 4, R=K, Rb, Cs. Occupation parameters of the ammonium ions corresponding to the two kinds of the crystallographically independent cation sites were successfully obtained, which can explain the spontaneous polarizations of the solid solutions by using an expanded Kittel's antif erroelectric free energy. The improper f erroelectric-like free energy function previously proposed seems unnecessary. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/56968 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 塩崎 洋一
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