Hot-pressed Mn-Zn-Ni and Mn-Zn-Co ferrites for magnetic recording heads

Hot-pressed Mn-Zn-Ni and Mn-Zn-Co ferrites for magnetic recording heads

Ni/sup 2+/ and Co/sup 2+/ substituted Mn-Zn ferrites have been developed as high-density magnetic recording materials by hot pressing using optimum sintering parameters. Ferrite series of the composition Mn/sub 0.6/Zn/sub 0.4-x/Ni/sub x/Fe/sub 2/O/sub 4/ and Mn/sub 0.6/Zn/sub 0.4-y/Co/sub y/Fe/sub 2...

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Veröffentlicht in:IEEE transactions on magnetics 1992-01, Vol.28 (1), p.21-26
Hauptverfasser: Babbar, V.K., Puri, R.K.
Format: Artikel
Sprache:eng
Schlagworte:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Ferrites
Grain size
Iron
Magnetic materials
Magnetic properties
Magnetic properties and materials
Magnetic recording
Permeability
Physics
Pressing
Saturation magnetization
Studies of specific magnetic materials
Zinc
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Beschreibung
Zusammenfassung:Ni/sup 2+/ and Co/sup 2+/ substituted Mn-Zn ferrites have been developed as high-density magnetic recording materials by hot pressing using optimum sintering parameters. Ferrite series of the composition Mn/sub 0.6/Zn/sub 0.4-x/Ni/sub x/Fe/sub 2/O/sub 4/ and Mn/sub 0.6/Zn/sub 0.4-y/Co/sub y/Fe/sub 2/O/sub 4/ were prepared by the hot-pressing technique wherein x and y varied from 0.0 to 0.4 in steps of 0.05. It yielded ferrites with improved magnetic properties having higher hardness (>or=650 Vickers units), low porosity (
ISSN:0018-9464
1941-0069
DOI:10.1109/20.119812