Magnetic properties of Sr-ferrites synthesized in molten (NaCl + KCl) flux

Si Dong Kim; Jung Sik Kim

doi:10.1016/j.jmmm.2006.04.019

Magnetic properties of Sr-ferrites synthesized in molten (NaCl + KCl) flux

Si Dong Kim, Jung Sik Kim

Department of Materials Science and Engineering

University of Seoul

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

40 Scopus citations

Abstract

The Sr-ferrite powders, SrFe₁₂ O₁₉, were synthesized by the molten salt method using (NaCl + KCl) mixture. Particle morphology was homogeneous and hexagonal platelet like. Both particle size and thickness increased as the reaction temperature and time increased. The sintering density of Sr-ferrite magnet prepared with powders by the molten salt method showed the maximum value at the sintering temperature of 1200 ^{{ring operator}} C. The magnetic properties of the Sr-ferrite magnet were investigated with various sintering temperatures. The maximum values of remanent magnetization (σ_r, 45 emu/g) and coercivity field (_jH_c, 298 kA/m) occurred at the sintering temperatures of 1150-1200 ^{{ring operator}} C. The Sr-ferrite magnet by a molten salt method showed higher remanent magnetization and coercivity field than those of the Sr-ferrite magnet prepared with the same starting materials by a conventional ceramic process.

Original language	English
Pages (from-to)	295-300
Number of pages	6
Journal	Journal of Magnetism and Magnetic Materials
Volume	307
Issue number	2
DOIs	https://doi.org/10.1016/j.jmmm.2006.04.019
State	Published - Dec 2006

Keywords

Hexagonal ferrite
Magnetic properties
Molten salt method
Sr-ferrite

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10.1016/j.jmmm.2006.04.019

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title = "Magnetic properties of Sr-ferrites synthesized in molten (NaCl + KCl) flux",

abstract = "The Sr-ferrite powders, SrFe12 O19, were synthesized by the molten salt method using (NaCl + KCl) mixture. Particle morphology was homogeneous and hexagonal platelet like. Both particle size and thickness increased as the reaction temperature and time increased. The sintering density of Sr-ferrite magnet prepared with powders by the molten salt method showed the maximum value at the sintering temperature of 1200 {ring operator} C. The magnetic properties of the Sr-ferrite magnet were investigated with various sintering temperatures. The maximum values of remanent magnetization (σr, 45 emu/g) and coercivity field (jHc, 298 kA/m) occurred at the sintering temperatures of 1150-1200 {ring operator} C. The Sr-ferrite magnet by a molten salt method showed higher remanent magnetization and coercivity field than those of the Sr-ferrite magnet prepared with the same starting materials by a conventional ceramic process.",

keywords = "Hexagonal ferrite, Magnetic properties, Molten salt method, Sr-ferrite",

author = "Kim, {Si Dong} and Kim, {Jung Sik}",

year = "2006",

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T1 - Magnetic properties of Sr-ferrites synthesized in molten (NaCl + KCl) flux

AU - Kim, Si Dong

AU - Kim, Jung Sik

PY - 2006/12

Y1 - 2006/12

N2 - The Sr-ferrite powders, SrFe12 O19, were synthesized by the molten salt method using (NaCl + KCl) mixture. Particle morphology was homogeneous and hexagonal platelet like. Both particle size and thickness increased as the reaction temperature and time increased. The sintering density of Sr-ferrite magnet prepared with powders by the molten salt method showed the maximum value at the sintering temperature of 1200 {ring operator} C. The magnetic properties of the Sr-ferrite magnet were investigated with various sintering temperatures. The maximum values of remanent magnetization (σr, 45 emu/g) and coercivity field (jHc, 298 kA/m) occurred at the sintering temperatures of 1150-1200 {ring operator} C. The Sr-ferrite magnet by a molten salt method showed higher remanent magnetization and coercivity field than those of the Sr-ferrite magnet prepared with the same starting materials by a conventional ceramic process.

AB - The Sr-ferrite powders, SrFe12 O19, were synthesized by the molten salt method using (NaCl + KCl) mixture. Particle morphology was homogeneous and hexagonal platelet like. Both particle size and thickness increased as the reaction temperature and time increased. The sintering density of Sr-ferrite magnet prepared with powders by the molten salt method showed the maximum value at the sintering temperature of 1200 {ring operator} C. The magnetic properties of the Sr-ferrite magnet were investigated with various sintering temperatures. The maximum values of remanent magnetization (σr, 45 emu/g) and coercivity field (jHc, 298 kA/m) occurred at the sintering temperatures of 1150-1200 {ring operator} C. The Sr-ferrite magnet by a molten salt method showed higher remanent magnetization and coercivity field than those of the Sr-ferrite magnet prepared with the same starting materials by a conventional ceramic process.

KW - Hexagonal ferrite

KW - Magnetic properties

KW - Molten salt method

KW - Sr-ferrite

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Magnetic properties of Sr-ferrites synthesized in molten (NaCl + KCl) flux

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Keywords

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