Domain Structure and Magnetic Properties of Epitazial Rare Earth-Transition Metal Thin Films
Rare Earth-Transition Metal permanent magnet films were epitaxially grown by pulsed laser deposition on heated MgO single crystal substrates of different orientations. The epitaxial growth relation of film, buffer and substrate is studied by pole figure measurements and its consequences on the anisotropic magnetic behavior are discussed. In the investigated material systems, RCo5 (R = Sm, Pr) and Nd-Fe-B, high anisotropies and coercivities are achieved, the film morphology, domain structure and the coercivity mechanism are, however, distinctly different. The small scaled domain structure found for SmCo5 and PrCo5 films is a consequence of the small grain sizes and the magnetization process is dominated by strong pinning. Nd2Fe14B based films, on the other hand, are nucleation type magnets and coercivity is influenced by film morphology and roughness.
permanent magnet film SmCo5 PrCo5 Nd-Fe-B epitazy pulsed laser deposition magnetic force microscopy coercivity mechanism
V.Neu S.F(a)hler A.Singh A.R.Kwon A.K.Patra U.Wolff K.H(a)fner B.Holzapfel L.Schultz
IFW Dresden, Institute for Metallic Materials, P.O.Box 270116, 01171 Dresden, Germany
国际会议
北京
英文
102-111
2006-08-29（万方平台首次上网日期，不代表论文的发表时间）