TY - JOUR
T1 - Grain boundary phase formation and magnetic properties of NdFeB/Nd multilayered films
AU - Li, Deshan
AU - Suzuki, Shunji
AU - Horikawa, Takashi
AU - Itoh, Masahiro
AU - Machida, Ken Ichi
PY - 2009/3
Y1 - 2009/3
N2 - Two kinds of NdFeB singlelayered and NdFeB/Nd multilayered films were prepared on each Mo substrate using a three-dimensional sputtering system. The singlelayered films annealed at 1073 K consisted of Nd2Fe 14B main phase together with soft magnetic α-Fe phase as an impurity and only showed poor magnetic properties. However, for the multilayered films, the Nd-rich grain boundary phase among the Nd2Fe 14B particles was more effectively formed in a similar manner as conventional NdFeB sintered magnets, so that the α-Fe impurity phase was completely disappeared and the numbers of surface defects on the main phase particles were decreased. The resultant multilayered film magnets of [NdFeB (650nm)/Nd (10nm)]4 gave high HcJ values around 1.58MA/m for Br ≈ 1:21 T and (BH)max ≈ 279kJ/m3, respectively.
AB - Two kinds of NdFeB singlelayered and NdFeB/Nd multilayered films were prepared on each Mo substrate using a three-dimensional sputtering system. The singlelayered films annealed at 1073 K consisted of Nd2Fe 14B main phase together with soft magnetic α-Fe phase as an impurity and only showed poor magnetic properties. However, for the multilayered films, the Nd-rich grain boundary phase among the Nd2Fe 14B particles was more effectively formed in a similar manner as conventional NdFeB sintered magnets, so that the α-Fe impurity phase was completely disappeared and the numbers of surface defects on the main phase particles were decreased. The resultant multilayered film magnets of [NdFeB (650nm)/Nd (10nm)]4 gave high HcJ values around 1.58MA/m for Br ≈ 1:21 T and (BH)max ≈ 279kJ/m3, respectively.
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U2 - 10.1143/JJAP.48.033002
DO - 10.1143/JJAP.48.033002
M3 - Article
AN - SCOPUS:67650802847
SN - 0021-4922
VL - 48
SP - 33002
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 3
ER -