Magnetic properties of nanometer-size CoPt particles

Authors

Sy_Hwang Liou, University of Nebraska-LincolnFollow
Yi Liu, University of Nebraska-LincolnFollow
S.S. Malhotra, University of Nebraska - Lincoln
M. Yu, University of Nebraska - Lincoln
David J. Sellmyer, University of Nebraska-LincolnFollow

Date of this Version

4-15-1996

Comments

Published by American Institute of Physics. J. Appl. Phys. 79, 5060(1996). © 1996 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

We have prepared nanometer-size, isolated CoPt particles. The particles in the range of 100–300 nm in diameter were formed by annealing thin films in the temperature range of 550–800 °C. Films with magnetic coercivity as high as 30 kOe were achieved. The results indicate that the high magnetic coercivity was obtained because the crystallite size approaches that of noninteracting single-domain particles.