摘要:

The first observation of a long‐range magnetic order with planar anisotropy is reported in as‐deposited films of amorphous copper ferrite prepared by rf sputtering techniques. Data on the temperature dependence of the saturation magnetization, in‐plane anisotropy field, and gyromagnetic ratio were obtained on 1‐&mgr;m‐thick films sputtered in a 50% oxygen and 50% argon atmosphere. The films show a large magnetization and anisotropy field at room temperature. The low‐temperature magnetization, Curie temperature, and gyromagnetic ratio are in agreement with the values expected for crystalline copper ferrite. A paramagnetic‐to‐antiferromagnetic transition at 50 K is evident in the magnetization data. We propose that the films contain magnetically ordered clusters of copper ferrite and Fe2O3.

ISSN:0003-6951    

DOI:10.1063/1.105462

出版商:AIP    

年代:1991

数据来源: AIP

ISSN:0003-6951    

DOI:10.1063/1.105464

出版商:AIP    

年代:1991

数据来源: AIP