Magnetic Co3O4 nanowires, preparation and properties

The Co3O4 nanowires have been successfully synthesized via modified template method.The as-prepared products have been characterized by EDS,TEM and HRTEM analysis.The magnetic behavior of it is investigated by a magnetic property measurement system.The nanowires exhibit some novel magnetic propertie...

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Bibliographic Details
Published in:Chinese chemical letters 2012-07, Vol.23 (7), p.851-854
Main Authors: Ma, Mai Xia, Chen, Wei Meng, Guo, Lin, Li, Jing Hong, Chen, Chin Ping, Yang, Shi He
Format: Article
Language:English
Subjects:
Magnetic properties
Nanostructures
Oxides
TEM表征
制备
四氧化三钴
性能
温度依赖性
磁性质
纳米线
透射电子显微镜分析
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Summary:The Co3O4 nanowires have been successfully synthesized via modified template method.The as-prepared products have been characterized by EDS,TEM and HRTEM analysis.The magnetic behavior of it is investigated by a magnetic property measurement system.The nanowires exhibit some novel magnetic properties,which are different from its bulk material.The temperature dependence curves of magnetization in zero-field-cooling and field-cooling exhibit two peaks of antiferromagnetic at blocking temperature of～23 K and～31 K,respectively.The field dependent M（H） curves of the Co_3O_4 nanowires at T = 5 and 300 K both exhibit PM properties.Moreover,the diameter of nanowires is hence determined according to the finite size effect as approximately 7-11 nm,in consistent with the characterizations by HRTEM.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2012.05.013