Crystalline anisotropy effect on magnetic properties and its competition with shape anisotropy

• Published in: Metals and materials international Vol. 17; no. 3; pp. 509 - 513
• Main Authors: Lee, Tae Hwan, Koo, Hyun Cheol, Kim, Hyung-jun, Han, Suk Hee, Lim, Sang Ho
• Format: Journal Article
• Language: English
• Published: Springer The Korean Institute of Metals and Materials 01.06.2011; Springer Nature B.V; 대한금속·재료학회
• Subjects: Anisotropy; Aspect ratio; Characterization and Evaluation of Materials; Chemistry and Materials Science; Competition; Crystal structure; Engineering Thermodynamics; Heat and Mass Transfer; Machines; Magnetic domains; Magnetic Materials; Magnetic properties; Magnetic switching; Magnetism; Manufacturing; Materials Science; Metallic Materials; Processes; Simulation; Solid Mechanics; 재료공학; spintronics; magnetic properties; ferromagnetic materials; domain; thin films
• ISSN: 1598-9623; 2005-4149
• DOI: 10.1007/s12540-011-0632-z

Shape and crystalline anisotropies compete when their easy axes are perpendicular. The critical aspect ratio, which is the aspect ratio required to offset the crystalline anisotropy, was observed in an effort to investigate the quantitative contribution of crystalline anisotropy using micromagnetic simulation. For a 0.25 μm width hcp -Co pattern, an aspect ratio of 2.7 is required in order to cancel out a crystalline anisotropy constant of 26 kJ/m 3 . The magnetic switching properties are also affected by crystalline anisotropy, which causes the magnetic domain to be narrowed during the reversal process.