Compositional Microstructure of Perpendicular Magnetic Recording Media
- 1 July 1985
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Translation Journal on Magnetics in Japan
- Vol. 1 (4), 399-405
- https://doi.org/10.1109/TJMJ.1985.4548813
Abstract
The microcolumnar structure of Co-Cr film has been studied using chemical etching. Only the columns are dissolved, leaving the column boundaries with a micro-honeycomb structure. From compositional analysis of the etchant after etching, Cr segregated column boundaries have been confirmed to exist even in Co-Cr films sputtered at high sputtering rates. Co-Cr films with higher Hc show sharper and narrower grain boundaries of a higher Cr content. It is concluded that the degree of Cr segregation is a very important factor in the control of the magnetic properties of Co-Cr films.Keywords
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