DigitalCommons@University of Nebraska - Lincoln - T. Yokota, L. Gao, Sy_Hwang Liou, M.L. Yan, and David J. Sellmyer: Effect of Au spacer layer on <i>L</i>1<sub>0</sub> phase ordering temperature of CoPt thin films

Research Papers in Physics and Astronomy

Si-Hwang Liou Publications

Title

Effect of Au spacer layer on L1₀ phase ordering temperature of CoPt thin films

Authors

T. Yokota, University of Nebraska - Lincoln
L. Gao, University of Nebraska - Lincoln
Sy_Hwang Liou, University of Nebraska-Lincoln
M.L. Yan, University of Nebraska - Lincoln
David J. Sellmyer, University of Nebraska-Lincoln

Document Type

Article

Date of this Version

June 2004

Comments

Abstract

We have studied the effect of Au on the ordering temperature of CoPt films. The coercivity of the CoPt multilayer with 2 nm Au inserted is around 5 kOe after annealing at 400 °C. This ordering temperature is about 200 °C lower than that of a pure CoPt film. Crystallographical analysis using x-ray diffraction has also revealed that the lattice constant is drastically changed around the same temperature, which is related to the formation of the L1₀-ordered structure. Thus, the Au plays an important role in reducing the ordering temperature.

Download