| 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 |
Ni_1Co_2複合酸化物の電気抵抗と結晶構造 |
| 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 |
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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 |
The Resistivity and Crystal Structure of Binary Oxide Ni_1Co_2 |
| 著者 |
坂田, 君子
坂田, 民雄
木越, 邦彦
SAKATA, Kimiko
SAKATA, Tamio
KIGOSHI, Kunihiko
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| 著者所属 |
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東京大学理工学研究所 |
| 著者所属 |
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大倉電気株式会社 |
| 著者所属 |
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学習院大学化学教室 |
| 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 8,
号 2,
p. 39-48,
発行日 1954-03-23
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| 抄録（英） |
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内容記述タイプ |
Other |
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内容記述 |
In our preliminary experiment it was found that in binary oxide system Ni-Co, remarkable decrease in resistivity and activation energy occurs at the composition of Ni_1Co_2. In the present experiment, attention was concentrated solely to the study of the oxide having this composition. In order to investigate the transition of the crystal structure, specimens that were quenched from various temperatures were examined by X-ray diffraction. In the course of the heat treatment, resistivity measurememt was made simultaneously, and it was found that this provided a convenient measure of the degree of oxidation, and also served as an indication of the transition that occurred. One series of experiment was made, starting from the oxide, prepared by prefiring mixed carbonate at about 300℃. The results are tabulated in Table I. It was recognized that specimens quenched from temperatures higher than 750℃, were of definite composition [MeO(Me=Ni_1Co_2)] and structure (NaCl-type), having almost constant lattice parameter (a=4.23_5). In the Second series of experiment, this state was chosen as a starting point, and the temperature dependency of the resistivity and the crystal structure were closely investigated. The result of this experiment is given in Table II. A slight decrease of the lattice parameter of MeO accompanied by decrease in resistivity at room temperature is observed in specimens Nos.1,2 and 3. Presumably this is due to increase in the number of lattice defects in metal sites in MeO that occurs as the results of the oxidation. Further oxidation causes the transition from NaCl-type to spinel type structure (Nos. 4,5,6 and 7) accompanied by increase in resistivity at room temperature of the quenched sample. |
| 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 |
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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: SA2410198000 |
SA2410198.pdf (973.1 kB)
