| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2015-03-26 |
| タイトル |
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タイトル |
酸化タングステンの強電性の研究 : II.高温に於ける熱的性質 |
| 言語 |
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言語 |
jpn |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| その他のタイトル（英） |
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その他のタイトル |
Study on the Ferroelectricity of Tungsten Oxide. : II. Thermal Properties at High Temperatures. |
| 著者 |
澤田, 正三
安藤, 林次郎
SAWADA, Shozo
ANDO, Rinjiro
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| 著者所属 |
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東京大學理工學研究所 |
| 著者所属 |
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東京大學理工學研究所 |
| 著者所属（英） |
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en |
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THE INSTITUTE OF SCIENCE AND TECHNOLOGY, UNIVERSITY OF TOKYO |
| 著者所属（英） |
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en |
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THE INSTITUTE OF SCIENCE AND TECHNOLOGY, UNIVERSITY OF TOKYO |
| 出版者 |
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出版者 |
東京大学理工学研究所 |
| 書誌情報 |
東京大學理工學研究所報告
巻 5,
号 5,
p. 143-148,
発行日 1951-11-30
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| 抄録（英） |
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内容記述タイプ |
Other |
|
内容記述 |
Thermal expansion and specific heat of tungsten oxide were observed-quantitatively in the neighborhood of 710℃, which temperature, as reported in the previous paper, seems to be the Curie point where the spontaneous polarization of this substance vanishes. The thermal expansion coefficient becomes almost infinitely negative at 755℃ and the amount of the contraction is about 0.12%. The specific heat, on the other hand, shows a peak at 728℃ and the amount of the anomalous heat capacity is about 450 cal/mol. These results are similar with those observed for barium titanate at the 120℃ transition. The above mentioned values of the transition temperature are a little higher than reported previously, perhaps owing to the high purity of the present sample. Although a distinct expansion is observed near 330℃, any anomaly of the specific heat is not observed near this temperature. (Received September 10, 1951) |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0371-6090 |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN00162611 |
| 資料番号 |
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内容記述タイプ |
Other |
|
内容記述 |
資料番号: SA2410090000 |
SA2410090.pdf (622.7 kB)
