Title :
Magnetic properties of nanocomposite Nd2Fe14B-Fe films
Author :
Tsai, Jai-Lin ; Chin, Tsung-Shune ; Shih, Jhy-Chau ; Chen, Shi-Kun
Author_Institution :
Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
fDate :
9/1/1999 12:00:00 AM
Abstract :
Nanocomposite Nd2Fe14B-Fe two-phase films have been prepared by dc magnetron sputtering. Single-phase demagnetization behavior was observed in films with Fe content up to 30 vol%. Coercivity decreases while residual magnetization increases with increasing iron content higher than 17 vol%. The optimum coercivity and residual magnetization are 8.2 kOe, 6.7 kG, respectively, from a Nd2Fe14B-17 vol% Fe film. Typical grain sizes are 50 nm and 10 nm for the Nd2Fe14B and α-Fe phases, respectively, observed in a Nd2Fe14B-22 vol% Fe film
Keywords :
boron alloys; coercive force; composite materials; demagnetisation; ferromagnetic materials; grain size; iron alloys; magnetic thin films; magnetisation; nanostructured materials; neodymium alloys; permanent magnets; sputtered coatings; DC magnetron sputtering; Fe content; Nd2Fe14B-Fe; coercivity; exchange-coupling; grain sizes; magnetic properties; nanocomposite Nd2Fe14B-Fe films; optimum coercivity; residual magnetization; single-phase demagnetization behavior; two-phase films; Coercive force; Iron; Magnetic films; Magnetic properties; Materials science and technology; Microstructure; Neodymium; Saturation magnetization; Soft magnetic materials; Sputtering;
Journal_Title :
Magnetics, IEEE Transactions on
