Title :
Fabrication of perpendicular magnetic anisotropic Nd-Fe-B based thin films through annealing Nd-Fe-B/Nd-Fe multilayer
Author :
Tian, N. ; Li, Y. ; Hong, F. ; You, C.
Author_Institution :
Sch. of Mater. Sci. & Eng., Xi´an Univ. of Technol., Xi´an, China
Abstract :
This study presents a way of achieving high perpendicular coercivity by post-annealing Ta/NdFeB/NdFe/NdFeB/Ta multilayer films deposited by evaporation method on Si substrate at 650°C. The demagnetization curves of the multilayer film have shoulders close to zero applied field, indicating that there exist some soft magnetic phases in the film. Microstructure characterization is carried out to understand the coercivity mechanism. The strong perpendicular magnetic anisotropy of the film is mainly attributed to the partial textured structure, which is confirmed by micromagnetic simulation.
Keywords :
annealing; boron alloys; coercive force; crystal microstructure; demagnetisation; iron alloys; magnetic multilayers; magnetic thin films; metallic thin films; micromagnetics; neodymium alloys; perpendicular magnetic anisotropy; soft magnetic materials; tantalum; vacuum deposition; Si; Ta-NdFeB-NdFe-NdFeB-Ta; coercivity; demagnetization curves; evaporation method; micromagnetic simulation; microstructure; multilayer thin films; partial textured structure; perpendicular magnetic anisotropy; post-annealing; soft magnetic phases; temperature 650 degC; Coercive force; Films; Magnetic hysteresis; Magnetic multilayers; Nonhomogeneous media; Perpendicular magnetic anisotropy;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157451
