Processing of Sm-Co Films in High Magnetic Field for Inducing Texture and Anisotropy
Abstract
The objectives of this study were to induce texture and anisotropy in the film plane by crystallizing amorphous Sm-Co films below the magnetic ordering temperature in the presence of high magnetic field along the film plane. Magnetically isotropic amorphous films were grown by magnetron sputtering and were crystallized at 450-600 deg C (below the magnetic ordering of Sm-Co alloys) in magnetic fields up to 29 T. However, no texture or anisotropy along the magnetic field direction was observed. The experiments were also conducted on anisotropic Sm-Co films that were grown on Cr/Ag/Si templates and had a significant in-plane anisotropy. When these films were subjected to high magnetic field up to 29 T, with their easy axis aligned along the magnetic field, and heated to 450-600 deg C no enhancement in magnetic anisotropy due to magnetic field effect was observed, rather already existing magnetic anisotropy was lost due to thermal treatment. These experiments lead to the conclusion that magnetic energy term is insignificant relative to the other energies involved in the process in this temperature range. However, at higher temperatures, the magnetic energy term may become significant. Further experiments at elevated temperatures are planned in this context.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 14, 1999
- Accession Number
- ADA365295
Entities
People
- Shahid A. Shaheen
Organizations
- Florida State University