Development of optimum preparation conditions of Fe-deficient M-type Ca-Sr-La System hexagonal ferrite Magnet

Ching Chien Huang; Shih Hao Lin; Chin Chieh Mo; Tsung Han Hsiao; Yen Hua Tai; Yung Hsiung Hung; Chun Hao Chiu; Hsiao Hsuan Hsu; Chun Hu Cheng

doi:10.1109/TMAG.2020.3042095

Development of optimum preparation conditions of Fe-deficient M-type Ca-Sr-La System hexagonal ferrite Magnet

Ching Chien Huang, Shih Hao Lin, Chin Chieh Mo, Tsung Han Hsiao, Yen Hua Tai, Yung Hsiung Hung, Chun Hao Chiu, Hsiao Hsuan Hsu, Chun Hu Cheng

Department of Mechartronic Engineering

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

Abstract

In this work, an experiment was carried out to investigate the preparation condition of anosotropic Fe-deficient M-type Ca-Sr-La system ferrire with optimum magnetic and physical properties using the raw material Fe2O3 from steel industrial iron oxide waste. The compositions of the calcined ferrites were chosen according to the stoichiometry Ca1-x-yLaxSryFe10.9CozO19, where M-type singlephase calcined powder was synthesized with a composition of x = 0.45, y = 0.18 and z = 0. The effect of CaO, SiO2 and Co3O4 inter-additives on the Ca-Sr-La system ferrite was also discussed in order to obtain low-temperature sintered magnets. The magnetic properties of Br = 4570Gauss, bHc = 4320 Oe, iHc =5260 Oe and (BH)max = 5.16 MGOe were obtained for Ca-Sr-La system hard magnets with low cobalt content at 1.85wt%. The magnetic properties greats exceeds that of traditional Sr-La-Co M-type ferrite, which has been the highest grade M-type hard ferrite. The unremarkable steel industrial iron oxide waste Fe2O3 is recycled produce high-end permanent magnets under output power < 1kW, which will eventually be used in high-efficiency motors.

Original language	English
Journal	IEEE Transactions on Magnetics
DOIs	https://doi.org/10.1109/TMAG.2020.3042095
Publication status	Accepted/In press - 2020

Keywords

by-product
Calcination
circular economy
Cobalt
Ferrites
hard ferrite
Iron
iron oxide powder
magnet
Magnetic properties
motor
Powders
Saturation magnetization

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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Development of optimum preparation conditions of Fe-deficient M-type Ca-Sr-La System hexagonal ferrite Magnet. / Huang, Ching Chien; Lin, Shih Hao; Mo, Chin Chieh; Hsiao, Tsung Han; Tai, Yen Hua; Hung, Yung Hsiung; Chiu, Chun Hao; Hsu, Hsiao Hsuan; Cheng, Chun Hu.

In: IEEE Transactions on Magnetics, 2020.

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

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abstract = "In this work, an experiment was carried out to investigate the preparation condition of anosotropic Fe-deficient M-type Ca-Sr-La system ferrire with optimum magnetic and physical properties using the raw material Fe2O3 from steel industrial iron oxide waste. The compositions of the calcined ferrites were chosen according to the stoichiometry Ca1-x-yLaxSryFe10.9CozO19, where M-type singlephase calcined powder was synthesized with a composition of x = 0.45, y = 0.18 and z = 0. The effect of CaO, SiO2 and Co3O4 inter-additives on the Ca-Sr-La system ferrite was also discussed in order to obtain low-temperature sintered magnets. The magnetic properties of Br = 4570Gauss, bHc = 4320 Oe, iHc =5260 Oe and (BH)max = 5.16 MGOe were obtained for Ca-Sr-La system hard magnets with low cobalt content at 1.85wt%. The magnetic properties greats exceeds that of traditional Sr-La-Co M-type ferrite, which has been the highest grade M-type hard ferrite. The unremarkable steel industrial iron oxide waste Fe2O3 is recycled produce high-end permanent magnets under output power < 1kW, which will eventually be used in high-efficiency motors.",

keywords = "by-product, Calcination, circular economy, Cobalt, Ferrites, hard ferrite, Iron, iron oxide powder, magnet, Magnetic properties, motor, Powders, Saturation magnetization",

author = "Huang, {Ching Chien} and Lin, {Shih Hao} and Mo, {Chin Chieh} and Hsiao, {Tsung Han} and Tai, {Yen Hua} and Hung, {Yung Hsiung} and Chiu, {Chun Hao} and Hsu, {Hsiao Hsuan} and Cheng, {Chun Hu}",

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AU - Huang, Ching Chien

AU - Lin, Shih Hao

AU - Mo, Chin Chieh

AU - Hsiao, Tsung Han

AU - Tai, Yen Hua

AU - Hung, Yung Hsiung

AU - Chiu, Chun Hao

AU - Hsu, Hsiao Hsuan

AU - Cheng, Chun Hu

PY - 2020

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AB - In this work, an experiment was carried out to investigate the preparation condition of anosotropic Fe-deficient M-type Ca-Sr-La system ferrire with optimum magnetic and physical properties using the raw material Fe2O3 from steel industrial iron oxide waste. The compositions of the calcined ferrites were chosen according to the stoichiometry Ca1-x-yLaxSryFe10.9CozO19, where M-type singlephase calcined powder was synthesized with a composition of x = 0.45, y = 0.18 and z = 0. The effect of CaO, SiO2 and Co3O4 inter-additives on the Ca-Sr-La system ferrite was also discussed in order to obtain low-temperature sintered magnets. The magnetic properties of Br = 4570Gauss, bHc = 4320 Oe, iHc =5260 Oe and (BH)max = 5.16 MGOe were obtained for Ca-Sr-La system hard magnets with low cobalt content at 1.85wt%. The magnetic properties greats exceeds that of traditional Sr-La-Co M-type ferrite, which has been the highest grade M-type hard ferrite. The unremarkable steel industrial iron oxide waste Fe2O3 is recycled produce high-end permanent magnets under output power < 1kW, which will eventually be used in high-efficiency motors.

KW - by-product

KW - Calcination

KW - circular economy

KW - Cobalt

KW - Ferrites

KW - hard ferrite

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KW - iron oxide powder

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KW - Saturation magnetization

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