The influence of demagnetization and anisotropy energy on bloch wall thickness and coercive force in thin films

✍ Scribed by Robert E. Behringer; Robert S. Smith

• Publisher: Elsevier Science
• Year: 1961
• Tongue: English
• Weight: 348 KB
• Volume: 272
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(61)90650-0

✦ Synopsis

A reasonable approximation is made to the actual Bloch wall structure ill thin uniaxial magnetic films. The corresponding demagnetization, exchange, and anisotropy energies are calculated and the Bloch wall thickness is determined by minimizing the wall energy. The result is used to determine the functional relation between coercive force and film thickness on the surface roughness model of N6el. Results show that the inclusion of the demagnetization energy by the crude model of N6el is, in fact, a very good approximation. The inclusion of negative effective anisotropy leads to deviations from the four-thirds power law.