Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Formation and properties of BaxFe3-xO4 with spinel structure by mechanochemical reaction of alpha-Fe2O3 and BaCO3 | |
其他题名 | 论文其他题名 |
He Q.; Wang H. Z.; Wen G. H.; Sun Y.; Yao B. | |
2009 | |
发表期刊 | Journal of Alloys and Compounds |
ISSN | 0925-8388 |
卷号 | 486期号:1—2页码:246-249 |
摘要 | Magnetic BaxFe3-xO4 (x similar to 0.23) with spinel structure was fabricated by ball milling of mixture of BaCO3 and nonmagnetic alpha-Fe2O3 powders, and the molar ratio of BaCO3 and alpha-Fe2O3 is 1:6. In the milling process, a mechanochemical reaction took place between BaCO3 and alpha-Fe2O3 and Ba cation incorporated into alpha-Fe2O3 with rhombohedral structure to form a alpha-(Fe,Ba)(2)O-3 solid solution. The Ba content in the alpha-(Fe,Ba)(2)O-3 increased with increasing milling time, when the Ba content exceeded a limited solubility, the alpha-(Fe,Ba)(2)O-3 transformed into a phase of BaxFe3-xO4 with spinel structure, where the Ba cation occupied an octahedral site or tetrahedral site. The product obtained in the balling process was different from that prepared in the annealing process at atmospheric pressure, which was BaFe2O4 with orthorhombic structure. Accompanying the crystal structure transition from alpha-(Fe,Ba)(2)O-3 to BaxFe3-xO4, the magnetic properties also changed from nonmagnetism into ferromagnetism. The saturation magnetization was 53.3 emu/g and coercivity was 113.7 Oe. The mechanism of transitions of the crystal structure was discussed in the present work. (C) 2009 Elsevier B.V. All rights reserved. |
收录类别 | SCI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/24801 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | He Q.,Wang H. Z.,Wen G. H.,et al. Formation and properties of BaxFe3-xO4 with spinel structure by mechanochemical reaction of alpha-Fe2O3 and BaCO3[J]. Journal of Alloys and Compounds,2009,486(1—2):246-249. |
APA | He Q.,Wang H. Z.,Wen G. H.,Sun Y.,&Yao B..(2009).Formation and properties of BaxFe3-xO4 with spinel structure by mechanochemical reaction of alpha-Fe2O3 and BaCO3.Journal of Alloys and Compounds,486(1—2),246-249. |
MLA | He Q.,et al."Formation and properties of BaxFe3-xO4 with spinel structure by mechanochemical reaction of alpha-Fe2O3 and BaCO3".Journal of Alloys and Compounds 486.1—2(2009):246-249. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
He-2009-Formation an(451KB) | 开放获取 | -- | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论