Switching mechanisms in cobalt-phosphorus thin films

Studies have shown that although the interactions between grains in magnetic thin-film recording media can enhance the squareness, these interactions are also responsible for media noise. The authors made measurements on Co-P thin films that give a simple and practical way of investigating the role...

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Bibliographic Details
Published inIEEE transactions on magnetics Vol. 25; no. 5; pp. 3881 - 3883
Main Authors Kelly, P.E., O'Grady, K., Mayo, P.I., Chantrell, R.W.
Format Journal Article
LanguageEnglish
Published IEEE 01.09.1989
Subjects
Hall effect devices
Magnetic field measurement
Magnetic films
Magnetic hysteresis
Magnetic noise
Magnetic recording
Magnetic variables measurement
Magnetometers
Protons
Transistors
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Summary:Studies have shown that although the interactions between grains in magnetic thin-film recording media can enhance the squareness, these interactions are also responsible for media noise. The authors made measurements on Co-P thin films that give a simple and practical way of investigating the role of interactions in the magnetic processes that occur in these films. All magnetic measurements were made on a PAR 155 vibrating sample magnetometer with a resolution of 10/sup -5/ EMU. The field measurements were made with a Bell-Gauss Hall probe calibrated with a proton magnetometer to give an accuracy of <0.1 Oe. The magnetic measurements made were the hysteresis loop. DC demagnetization, and isothermal remanent magnetization. It is noted that if a connection can be found between the results obtained and quantitative measures of noise in thin-film media, this work provides an important experimental link between models of the recording process and magnetic reversals in recording media.< >
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0018-9464
1941-0069
DOI:10.1109/20.42466