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Title: Magnetic properties of Sr-La system M-type ferrite fine particles prepared by controlling the chemical coprecipitation method

Abstract

Single phase Sr-La M-type ferrite fine particles were prepared by the chemical coprecipitation and subsequent heat-treatment methods. Optimum magnetic properties were achieved with materials of composition Sr{sub 0.794}{sup 2+}La{sub 0.172}{sup 3+}Fe{sub 0.335}{sup 2+}Fe{sub 11.74}{sup 3+}O{sub 19}, and heat-treatment of 950 C x 2h in air. The magnetic and physical properties are {sigma}{sub s} = 90.5 x 10{sup {minus}6} Wb {center{underscore}dot} m/kg (72.0emu/g), H{sub cJ} = 505.3 kA/m (6.35 kOe), Tc = 454.4 C, the lattice constants a = 0.5882nm, c = 2.303nm, the activation energy = 230.9kJ/mol(55.2kcal/mol), and the average particle size = 0.3{micro}m.

Authors:
;
Publication Date:
Research Org.:
Meiji Univ., Kawasaki (JP)
OSTI Identifier:
20000754
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; STRONTIUM OXIDES; LANTHANUM OXIDES; IRON OXIDES; FABRICATION; MAGNETIC PROPERTIES; CHEMICAL COMPOSITION

Citation Formats

Yamamoto, Hiroshi, and Seki, Hirota. Magnetic properties of Sr-La system M-type ferrite fine particles prepared by controlling the chemical coprecipitation method. United States: N. p., 1999. Web. doi:10.1109/20.800497.
Yamamoto, Hiroshi, & Seki, Hirota. Magnetic properties of Sr-La system M-type ferrite fine particles prepared by controlling the chemical coprecipitation method. United States. doi:10.1109/20.800497.
Yamamoto, Hiroshi, and Seki, Hirota. Wed . "Magnetic properties of Sr-La system M-type ferrite fine particles prepared by controlling the chemical coprecipitation method". United States. doi:10.1109/20.800497.
@article{osti_20000754,
title = {Magnetic properties of Sr-La system M-type ferrite fine particles prepared by controlling the chemical coprecipitation method},
author = {Yamamoto, Hiroshi and Seki, Hirota},
abstractNote = {Single phase Sr-La M-type ferrite fine particles were prepared by the chemical coprecipitation and subsequent heat-treatment methods. Optimum magnetic properties were achieved with materials of composition Sr{sub 0.794}{sup 2+}La{sub 0.172}{sup 3+}Fe{sub 0.335}{sup 2+}Fe{sub 11.74}{sup 3+}O{sub 19}, and heat-treatment of 950 C x 2h in air. The magnetic and physical properties are {sigma}{sub s} = 90.5 x 10{sup {minus}6} Wb {center{underscore}dot} m/kg (72.0emu/g), H{sub cJ} = 505.3 kA/m (6.35 kOe), Tc = 454.4 C, the lattice constants a = 0.5882nm, c = 2.303nm, the activation energy = 230.9kJ/mol(55.2kcal/mol), and the average particle size = 0.3{micro}m.},
doi = {10.1109/20.800497},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}