Synthesis and characterization of NiFe2O4 nanopowders via spray pyrolysis
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- JUNG Dae Soo
- Department of Chemical Engineering, Konkuk University
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- JANG Hee Chan
- Department of Chemical Engineering, Konkuk University
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- LEE Man-Jong
- Department of Advanced Technology Fusion, Konkuk University
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- JUNG Kyeong Youl
- Department of Chemical Engineering, Kongju National University
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- KANG Yun Chan
- Department of Chemical Engineering, Konkuk University
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Abstract
NiFe2O4 powders with large-sized, hollow, and thin wall structures were directly prepared by spray pyrolysis from a spray solution containing citric acid. These as-prepared powders converted into nanosized NiFe2O4 powders after post-treatment at high temperatures between 600 and 1000°C. Phase-pure NiFe2O4 powders were obtained at post-treatment temperatures between 700 and 1000°C. When the post-treatment temperatures were increased from 700 to 1000°C, the BET surface areas of the NiFe2O4 powders decreased from 23.4 to 11.8 m2/g and their mean sizes increased from 47.8 to 94.7 nm, respectively. The saturation magnetizations of the powders changed from 32 to 44 emu/g according to changes in the post-treatment temperatures. The coercivities of the powders post-treated at temperatures of 700 and 800°C were 118 and 130 Oe, respectively.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 117 (1370), 1069-1073, 2009
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390001205282534016
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- NII Article ID
- 130000304922
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- NII Book ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 10374125
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed