A study of the magnetic domains of isolated fine particles of Ba ferrite

Osamu Kitakami; Kimiyoshi Goto; Tomoaki Sakurai

doi:10.1143/JJAP.27.2274

A study of the magnetic domains of isolated fine particles of Ba ferrite

Osamu Kitakami, Kimiyoshi Goto, Tomoaki Sakurai

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

8 Citations (Scopus)

Abstract

Isolated Ba ferrite particles are prepared by the conventional powder metallurgical method, and the magnetic domains of about 200 particles 0.5 to 5 μm in size are investigated by the colloid-SEM method (the Bitter method using a scanning electron microscope). The relationship between the three-dimensional sizes of Ba ferrite particles and their magnetic domain states is clarified. It is found that the critical size of isolated single-domain particles of Ba ferrite is somewhat larger than the value calculated using the magnetic domain theory.

Original language	English
Pages (from-to)	2274-2277
Number of pages	4
Journal	Japanese journal of applied physics
Volume	27
Issue number	12R
DOIs	https://doi.org/10.1143/JJAP.27.2274
Publication status	Published - 1988 Dec
Externally published	Yes

Keywords

Ba ferrite
Colloid-SEM method
Magnetic domain
Single-domain particle

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.27.2274

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author = "Osamu Kitakami and Kimiyoshi Goto and Tomoaki Sakurai",

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AU - Kitakami, Osamu

AU - Goto, Kimiyoshi

AU - Sakurai, Tomoaki

PY - 1988/12

Y1 - 1988/12

N2 - Isolated Ba ferrite particles are prepared by the conventional powder metallurgical method, and the magnetic domains of about 200 particles 0.5 to 5 μm in size are investigated by the colloid-SEM method (the Bitter method using a scanning electron microscope). The relationship between the three-dimensional sizes of Ba ferrite particles and their magnetic domain states is clarified. It is found that the critical size of isolated single-domain particles of Ba ferrite is somewhat larger than the value calculated using the magnetic domain theory.

AB - Isolated Ba ferrite particles are prepared by the conventional powder metallurgical method, and the magnetic domains of about 200 particles 0.5 to 5 μm in size are investigated by the colloid-SEM method (the Bitter method using a scanning electron microscope). The relationship between the three-dimensional sizes of Ba ferrite particles and their magnetic domain states is clarified. It is found that the critical size of isolated single-domain particles of Ba ferrite is somewhat larger than the value calculated using the magnetic domain theory.

KW - Ba ferrite

KW - Colloid-SEM method

KW - Magnetic domain

KW - Single-domain particle

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

IS - 12R

ER -

A study of the magnetic domains of isolated fine particles of Ba ferrite

Abstract

Keywords

ASJC Scopus subject areas

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