Structure and Magnetic Properties of Co-Ni Spinel Ferrite Particles Synthesized via Co-Precipitation and Hydrothermal Treatment at Different Temperatures
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- Kishimoto Mikio
- Institute of Applied Physics, University of Tsukuba
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- Latiff Hawa
- Institute of Applied Physics, University of Tsukuba
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- Kita Eiji
- Institute of Applied Physics, University of Tsukuba
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- Yanagihara Hideto
- Institute of Applied Physics, University of Tsukuba
Bibliographic Information
- Other Title
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- 共沈後異なる温度での水熱処理により合成したCo-Niスピネルフェライト粒子の構造と磁気特性
- キョウチン ゴ コトナル オンド デ ノ スイネツ ショリ ニ ヨリ ゴウセイ シタ Co-Ni スピネルフェライト リュウシ ノ コウゾウ ト ジキ トクセイ
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Abstract
<p>Co-Ni spinel ferrite particles were synthesized via chemical co-precipitation and subsequently performed hydrothermal treatment at different temperatures. Fine particles of size with a few nanometers and spherical or cubic particles of size approximately 30 nm, which are responsible for magnetic properties, were obtained. The crystallite size obtained using the Scherrer equation was 24-27 nm and showed no dependency on the hydrothermal treatment temperature unlike the apparent particle size observed using transmission electron microscopy. The coercive force showed a remarkable increase with the decrease in the hydrothermal treatment temperature from 141 kA/m at 240℃ to 400 kA/m at 100-120℃, in contrast to the decrease in magnetization from 60.0 Am2/kg at 240℃ to 37.2 Am2/kg at 100℃. The specific composition of the Co-Ni spinel ferrite particles is expected to affect the high coercive force and the remarkable dependency of the coercive force on the hydrothermal treatment temperature.</p>
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 83 (6), 207-211, 2019-06-01
The Japan Institute of Metals and Materials
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Keywords
Details 詳細情報について
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- CRID
- 1390845713070155776
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- NII Article ID
- 130007653140
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 029770051
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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