甚高频用超低饱和磁化强度In∶BiCaVIG晶体生长及磁特性研究

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (1): 32-37.

甚高频用超低饱和磁化强度In∶BiCaVIG晶体生长及磁特性研究

魏占涛, 游斌, 姜帆, 张平川, 蓝江河

西南应用磁学研究所,绵阳 621000

收稿日期:2020-09-10 出版日期:2021-01-15 发布日期:2021-03-01
通讯作者: 张平川,高级工程师。E-mail:tao15892598081@qq.com
作者简介:魏占涛(1989—),男,河南省人,工程师。E-mail:642954173@qq.com

Growth and Magnetic Properties Study of Ultra-Low Saturation Magnetization In∶BiCaVIG Crystal for VHF Applications

WEI Zhantao, YOU Bin, JIANG Fan, ZHANG Pingchuan, LAN Jianghe

Southwest Institute of Applied Magnetics, Mianyang 621000, China

Received:2020-09-10 Online:2021-01-15 Published:2021-03-01

摘要/Abstract

摘要： 利用加速坩埚转动技术制备了超低饱和磁化强度(M_s)石榴石型In∶BiCaVIG单晶铁氧体材料,系统研究了单晶样品的晶体结构、微观形貌及磁学性能。结果表明:In∶BiCaVIG单晶样品结晶良好,具有体心立方结构;样品的居里温度为104 ℃,饱和磁化强度为60 G,饱和磁化强度偏差达到±20 G, 略优于美国Microphere公司同类型材料产品。经过抛光处理后的球形样品线宽明显减小,最小线宽为5.8 Oe,这是因为化学抛光处理可以均匀腐蚀加工应力层,导致线宽减小。另外,与未掺杂BiCaVIG单晶相比,超低饱和磁化强度样品的线宽明显要大,这主要跟样品的饱和磁化强度大小有关。

关键词: In∶BiCaVIG, 单晶铁氧体, 超低饱和磁化强度, 甚高频

Abstract: The ultra-low saturation magnetization(M_s) ferrite garnet In∶BiCaVIG single crystal was successfully grown by the accelerated crucible rotation technique. Crystal structure, micro morphology, magnetic properties were systematic investigated. The results show that the In∶BiCaVIG crystal are well crystallized and belong to body-centered cubic structure. The Curie temperature of sample is 104 ℃, the 4πM_s is 60 G and the M_s deviation is±20 G, which are slightly better than similar products of the US Microsphere company. The linewidth(ΔH) of sphere samples reduces obviously by chemical polishing and the minimum ΔH can be up to 5.8 Oe.The behaviour of ΔH is related to the uniform corrosion of the stree layer caused by chemical polishing, which reduces the ΔH value.In addition,the linewidth of ultra-low M_s samples are obviously larger than that of undoped BiCaVIG samples which is mainly related to the contribution of the M_s.

Key words: In∶BiCaVIG, single crystal ferrite, ultra-low saturation magnetization, VHF

中图分类号:

O737

魏占涛, 游斌, 姜帆, 张平川, 蓝江河. 甚高频用超低饱和磁化强度In∶BiCaVIG晶体生长及磁特性研究[J]. 人工晶体学报, 2021, 50(1): 32-37.

WEI Zhantao, YOU Bin, JIANG Fan, ZHANG Pingchuan, LAN Jianghe. Growth and Magnetic Properties Study of Ultra-Low Saturation Magnetization In∶BiCaVIG Crystal for VHF Applications[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(1): 32-37.

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