CaSi氧化物对Sr1-xLaxFe11.6-xCoxO19六角铁氧体晶粒形貌及磁性能影响研究

doi:10.3724/SP.J.1077.2014.13140

无机材料学报 ›› 2014, Vol. 29 ›› Issue (1): 81-84.DOI: 10.3724/SP.J.1077.2014.13140

CaSi氧化物对Sr_1-xLa_xFe_11.6-xCo_xO₁₉六角铁氧体晶粒形貌及磁性能影响研究

陈中艳¹, 冯则坤¹, 詹振华², 吴捷²

(1. 华中科技大学光学与电子信息学院, 武汉 430074; 2. 广东江粉磁材股份有限公司, 江门 529000)

收稿日期:2013-03-07 修回日期:2013-05-15 出版日期:2014-01-20 网络出版日期:2013-12-09
作者简介:陈中艳(1983-), 女, 博士研究生. E-mail:chenzhongyan88@163.com
基金资助:
广东省教育部产学研合作项目(20110905)

Influence of CaSi Oxide on Microstructure and Magnetic Properties of Sr_1-xLa_xFe_11.6-xCo_xO₁₉ Hexaferrite

CHEN Zhong-Yan¹, FENG Ze-Kun¹, ZHAN Zhen-Hua², WU Jie²

(1. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China; 2. JPMF GuangDong Co., Ltd., Jiangmen 529000, China)

Received:2013-03-07 Revised:2013-05-15 Published:2014-01-20 Online:2013-12-09
About author:CHEN Zhong-Yan. E-mail:chenzhongyan88@163.com
Supported by:
Guangdong Province and Ministry of Education Cooperation Projects(20110905)

摘要/Abstract

摘要： 基于传统陶瓷工艺制备Sr_1-xLa_xFe_11.6-xCo_xO₁₉样品, 重点研究CaSi氧化物对Sr_1-xLa_xFe_11.6-xCo_xO₁₉预烧料晶粒形貌及磁性能的影响。采用XRD、SEM和VSM分析样品的结构特征、微观形貌及磁特性。微观形貌分析的结果表明CaSi氧化物可以有效调控预烧料的晶粒形貌, 通过优化CaSi氧化物的含量, 能够得到理想的微观形貌及高的M_r/M_s。当掺杂量x=0.2时, 加入0.15wt% CaCO₃和0.2wt% SiO₂的添加剂, 饱和磁化强度(σ_s)和矫顽力(H_cJ)比未加入CaSi氧化物时分别提高4.76%和6.2%, 样品的M_r/M_s在掺杂范围内均有所提高。

关键词: CaSi氧化物, 六角铁氧体, 微观形貌, 磁性能

Abstract: Based on the standard ceramic preparation process, the effects of CaSi oxide on the microstructure and magnetic properties of Sr_1-xLa_xFe_11.6-xCo_xO₁₉ were studied. The microstructural, morphology and magnetic properties of the samples were characterized by XRD, SEM and VSM. The SEM results show that the morphology of calcined samples are effective controled by CaSi oxide. So the ideal microstructure and enhanced M_r/M_s can be obtained by optimizing the amount of CaSi oxide. With x=0.2, 0.15wt% CaCO₃ and 0.2wt% SiO₂ were added to the Sr_1-xLa_xFe_11.6-x Co_xO₁₉ and the measured σ_s and H_cJwere enhanced by 4.76% and 6.2%, respectively, when compared with non-doped sample. Meanwhile, the Mr/Ms was improved as well in the above mentioned doping range.

Key words: CaSi oxide, hexaferrite, microstructure, magnetic properties

中图分类号:

TQ174

陈中艳, 冯则坤, 詹振华, 吴捷. CaSi氧化物对Sr_1-xLa_xFe_11.6-xCo_xO₁₉六角铁氧体晶粒形貌及磁性能影响研究[J]. 无机材料学报, 2014, 29(1): 81-84.

CHEN Zhong-Yan, FENG Ze-Kun, ZHAN Zhen-Hua, WU Jie. Influence of CaSi Oxide on Microstructure and Magnetic Properties of Sr_1-xLa_xFe_11.6-xCo_xO₁₉ Hexaferrite[J]. Journal of Inorganic Materials, 2014, 29(1): 81-84.

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CaSi氧化物对Sr_1-xLa_xFe_11.6-xCo_xO₁₉六角铁氧体晶粒形貌及磁性能影响研究

Influence of CaSi Oxide on Microstructure and Magnetic Properties of Sr_1-xLa_xFe_11.6-xCo_xO₁₉ Hexaferrite

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