Magnetic properties of ultrafine particles and bulk material of cadmium ferrite

M. Yokoyama; Eiji Ohta; T. Sato; T. Sato

doi:10.1016/S0304-8853(97)01073-1

Magnetic properties of ultrafine particles and bulk material of cadmium ferrite

M. Yokoyama, Eiji Ohta, T. Sato, T. Sato

Department of Applied Physics and Physico-Informatics

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

42 Citations (Scopus)

Abstract

We studied the magnetic properties of ultrafine cadmium ferrite particles that had been prepared by the coprecipita-tion method and bulk material by the generally used ceramic method. The ultrafine particles showed ferromagnetic behavior, while the bulk material had no spontaneous magnetization. We evaluated a large anisotropy constant K (3.6 x 10⁶ erg/cm³) in the ultrafine cadmium ferrite particles. The enhanced magnetic nature of the ultrafine particles can be explained based on an idea of cluster formation which is relevant to cation distribution.

Original language	English
Pages (from-to)	173-180
Number of pages	8
Journal	Journal of Magnetism and Magnetic Materials
Volume	183
Issue number	1-2
DOIs	https://doi.org/10.1016/S0304-8853(97)01073-1
Publication status	Published - 1998 Mar 7

Keywords

Cation distribution
Fine particle
Magnetic anisotropy
Normal spinel ferrite
Spontaneous magnetization

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "We studied the magnetic properties of ultrafine cadmium ferrite particles that had been prepared by the coprecipita-tion method and bulk material by the generally used ceramic method. The ultrafine particles showed ferromagnetic behavior, while the bulk material had no spontaneous magnetization. We evaluated a large anisotropy constant K (3.6 x 106 erg/cm3) in the ultrafine cadmium ferrite particles. The enhanced magnetic nature of the ultrafine particles can be explained based on an idea of cluster formation which is relevant to cation distribution.",

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AU - Yokoyama, M.

AU - Ohta, Eiji

AU - Sato, T.

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Y1 - 1998/3/7

N2 - We studied the magnetic properties of ultrafine cadmium ferrite particles that had been prepared by the coprecipita-tion method and bulk material by the generally used ceramic method. The ultrafine particles showed ferromagnetic behavior, while the bulk material had no spontaneous magnetization. We evaluated a large anisotropy constant K (3.6 x 106 erg/cm3) in the ultrafine cadmium ferrite particles. The enhanced magnetic nature of the ultrafine particles can be explained based on an idea of cluster formation which is relevant to cation distribution.

AB - We studied the magnetic properties of ultrafine cadmium ferrite particles that had been prepared by the coprecipita-tion method and bulk material by the generally used ceramic method. The ultrafine particles showed ferromagnetic behavior, while the bulk material had no spontaneous magnetization. We evaluated a large anisotropy constant K (3.6 x 106 erg/cm3) in the ultrafine cadmium ferrite particles. The enhanced magnetic nature of the ultrafine particles can be explained based on an idea of cluster formation which is relevant to cation distribution.

KW - Cation distribution

KW - Fine particle

KW - Magnetic anisotropy

KW - Normal spinel ferrite

KW - Spontaneous magnetization

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