Granular metal films as recording media

Authors

Sy_Hwang Liou, University of Nebraska-LincolnFollow
C.L. Chien, The Johns Hopkins University, Baltimore, Maryland

Date of this Version

February 1988

Comments

Published by American Institute of Physics. Appl. Phys. Lett. 52, 512 (1988). © 1988 American Institute of Physics. Permission to use. Journal home page = http://jap.aip.org/jap/.

Abstract

High-density recording media require materials with a high magnetization and high coercivity as well as chemical stability, wear, and corrosion resistance. We explore the potential of granular metal films for recording media. Films of Fe granules about 150 Å in size embedded in an amorphous SiO₂ matrix exhibit coercivities as high as 3 kOe at low temperatures and 1.1 kOe at room temperature, and magnetizations of about 150 emu/g. The methods with which these materials are fabricated, the essential microstructure characterization, and magnetic measurements are described.