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

Abstract

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

CLC Number:

O737

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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