NDLI: Distinctive characteristics of barium ferrite media

Content Provider	IEEE Xplore Digital Library
Author	Speliotis, D.
Copyright Year	1965
Abstract	Barium ferrite magnetic recording media have demonstrated the capability of achieving much higher recording densities than other particulate media. Even though the best performance is obtained with perpendicularly oriented media, longitudinally oriented and non-oriented Ba-ferrite media also exhibit exceptional recording characteristics. These media have very distinctive magnetic and switching field (SFD) characteristics, exhibiting very small SFD values, almost rectangular remanence loops (indicating no irreversible losses over a wide range of reverse fields), and minor loops very close to the major loop until the driving field becomes almost equal to the coercivity. These unique magnetic and switching field characteristics can explain the very low or negligible demagnetization losses (including recording demagnetization) which we observe in Ba-ferrite media and which result in their outstanding recording performance. The fundamental reasons for these unique magnetic and switching field properties are the predominant high uniaxial crystalline anisotropy of the platelets and their single domain character. On the negative side, the high anisotropy field is directly implicated as the main reason behind the marginal overwrite modulation which characterizes these media.
Sponsorship	IEEE Magnetics Society
Starting Page	3143
Ending Page	3145
Page Count	3
File Size	364637
File Format	PDF
ISSN	00189464
Volume Number	23
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1987-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Barium Ferrites Magnetic recording Magnetic anisotropy Perpendicular magnetic anisotropy Magnetic switching Perpendicular magnetic recording Demagnetization Anisotropic magnetoresistance Remanence
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Fluctuation fields of reversal in oriented and non-oriented barium ferrite media

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Curling mode in barium ferrite films with perpendicular anisotropy

Magnetization reversal for barium ferrite particulate media

Distinctive characteristics of barium ferrite media

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