Title :
Effect of underlayer structure on the crystallographic and magnetic properties of Nd-Fe-B thin films
Author :
Okumoto, T. ; Yamasawa, K. ; Liu, X. ; Matsumoto, M. ; Morisako, A.
Author_Institution :
Dept. of Inf. Eng., Shinshu Univ., Nagano, Japan
Abstract :
Nd-Fe-B Thin films with perpendicular magnetic anisotropy have been successfully prepared onto a W underlayer with [110] orientation. The crystal growing mechanism has been ascribed as tetragonal Nd2Fe14B [001] plane epitaxial growth onto a W [110] plane. The crystal structure of the Nd-Fe-B films sensitively depended on the crystal orientation and crystallinity of the underlayer. The Nd-Fe-B film with perpendicular coercivity of 9.8 kOe and squareness ratio of 1.0 and coercive squareness of 0.63 and nucleation field of -5.0 kOe has been prepared.
Keywords :
coercive force; crystal orientation; epitaxial growth; magnetic thin films; neodymium compounds; perpendicular magnetic anisotropy; Nd-Fe-B thin film; Nd2Fe14B; NdFeB; crystal growth; crystal orientation; crystal structure; crystallographic property; epitaxial growth; magnetic property; nucleation field; perpendicular coercivity; perpendicular magnetic anisotropy; underlayer structure; Crystallization; Crystallography; Iron; Magnetic films; Magnetic properties; Neodymium; Perpendicular magnetic anisotropy; Substrates; Temperature; X-ray scattering; Nd–Fe–B thin films; perpendicular magnetic anisotropy; underlayer structure;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854847
