Influence of CaCO3 and SiO2 additives on magnetic properties of M-type Sr ferrites

Ching Chien Huang; Ai Hua Jiang; Yung Hsiung Hung; Ching Hsuan Liou; Yi Chen Wang; Chi Ping Lee; Tong Yin Hung; Chun Chung Shaw; Ming Feng Kuo; Chun Hu Cheng

doi:10.1016/j.jmmm.2017.09.070

Influence of CaCO₃ and SiO₂ additives on magnetic properties of M-type Sr ferrites

Ching Chien Huang^*, Ai Hua Jiang, Yung Hsiung Hung, Ching Hsuan Liou, Yi Chen Wang, Chi Ping Lee, Tong Yin Hung, Chun Chung Shaw, Ming Feng Kuo, Chun Hu Cheng

^*Corresponding author for this work

Department of Mechatronic Engineering

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

An experiment was carried out to investigate the influence of CaCO₃ and SiO₂ additives on the magnetic and physical properties of M-type Sr ferrites by changing experimental parameters such as the additive composition and Ca/Si ratio. Specimens were prepared by conventional ceramic techniques. It was found that the magnetic properties (B_r = 4.42 kG, iH_c = 3.32 kOe and (BH)_max = 4.863 MGOe) were considerably improved upon adding CaCO₃ = 1.1% and SiO₂ = 0.4 wt% together with Co₃O₄, and the mechanical properties thereof were acceptable for motor applications. It was revealed that CaCO₃ and SiO₂ additives led to an upswing in the magnetic properties via the enhancement of uniform grain growth, particle alignment, and the densification of Sr ferrite.

Original language	English
Pages (from-to)	288-294
Number of pages	7
Journal	Journal of Magnetism and Magnetic Materials
Volume	451
DOIs	https://doi.org/10.1016/j.jmmm.2017.09.070
Publication status	Published - 2018 Apr 1

Keywords

Additives
Hard magnet
M-type
Microstructure
Sr ferrites

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2017.09.070

Cite this

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title = "Influence of CaCO3 and SiO2 additives on magnetic properties of M-type Sr ferrites",

abstract = "An experiment was carried out to investigate the influence of CaCO3 and SiO2 additives on the magnetic and physical properties of M-type Sr ferrites by changing experimental parameters such as the additive composition and Ca/Si ratio. Specimens were prepared by conventional ceramic techniques. It was found that the magnetic properties (Br = 4.42 kG, iHc = 3.32 kOe and (BH)max = 4.863 MGOe) were considerably improved upon adding CaCO3 = 1.1% and SiO2 = 0.4 wt% together with Co3O4, and the mechanical properties thereof were acceptable for motor applications. It was revealed that CaCO3 and SiO2 additives led to an upswing in the magnetic properties via the enhancement of uniform grain growth, particle alignment, and the densification of Sr ferrite.",

keywords = "Additives, Hard magnet, M-type, Microstructure, Sr ferrites",

author = "Huang, {Ching Chien} and Jiang, {Ai Hua} and Hung, {Yung Hsiung} and Liou, {Ching Hsuan} and Wang, {Yi Chen} and Lee, {Chi Ping} and Hung, {Tong Yin} and Shaw, {Chun Chung} and Kuo, {Ming Feng} and Cheng, {Chun Hu}",

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doi = "10.1016/j.jmmm.2017.09.070",

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T1 - Influence of CaCO3 and SiO2 additives on magnetic properties of M-type Sr ferrites

AU - Huang, Ching Chien

AU - Jiang, Ai Hua

AU - Hung, Yung Hsiung

AU - Liou, Ching Hsuan

AU - Wang, Yi Chen

AU - Lee, Chi Ping

AU - Hung, Tong Yin

AU - Shaw, Chun Chung

AU - Kuo, Ming Feng

AU - Cheng, Chun Hu

PY - 2018/4/1

Y1 - 2018/4/1

N2 - An experiment was carried out to investigate the influence of CaCO3 and SiO2 additives on the magnetic and physical properties of M-type Sr ferrites by changing experimental parameters such as the additive composition and Ca/Si ratio. Specimens were prepared by conventional ceramic techniques. It was found that the magnetic properties (Br = 4.42 kG, iHc = 3.32 kOe and (BH)max = 4.863 MGOe) were considerably improved upon adding CaCO3 = 1.1% and SiO2 = 0.4 wt% together with Co3O4, and the mechanical properties thereof were acceptable for motor applications. It was revealed that CaCO3 and SiO2 additives led to an upswing in the magnetic properties via the enhancement of uniform grain growth, particle alignment, and the densification of Sr ferrite.

AB - An experiment was carried out to investigate the influence of CaCO3 and SiO2 additives on the magnetic and physical properties of M-type Sr ferrites by changing experimental parameters such as the additive composition and Ca/Si ratio. Specimens were prepared by conventional ceramic techniques. It was found that the magnetic properties (Br = 4.42 kG, iHc = 3.32 kOe and (BH)max = 4.863 MGOe) were considerably improved upon adding CaCO3 = 1.1% and SiO2 = 0.4 wt% together with Co3O4, and the mechanical properties thereof were acceptable for motor applications. It was revealed that CaCO3 and SiO2 additives led to an upswing in the magnetic properties via the enhancement of uniform grain growth, particle alignment, and the densification of Sr ferrite.

KW - Additives

KW - Hard magnet

KW - M-type

KW - Microstructure

KW - Sr ferrites

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