TY - GEN
T1 - Microstructure of anisotropic Nd-Fe-B film magnets prepared by pulsed laser deposition
AU - Ishimaru, M.
AU - Itakura, M.
AU - Kuwano, N.
AU - Sato, S.
AU - Nakano, M.
AU - Fukunaga, H.
PY - 2007/1/1
Y1 - 2007/1/1
N2 - Microstructure of the anisotropic Nd-Fe-B thick-film magnets has been investigated by transmission electron microscopy. Specimens of the thick-film magnets were prepared by the high-speed pulsed laser deposition method with a substrate heating system. It was revealed that the film deposited on a Ta substrate has a three-layer structure of Nd2Fe14: The lower layer is composed of isotropic grains about 50-300 nm in diameter, the middle one has a columnar structure of 1 μm in height, and the upper one is again composed of small isotropic grains about several ten nm in diameter. The three-layer-structure is explained to result from a partial recrystallization of micro-crystalline Nd2Fe14B that are formed at the moment of deposition. In the middle layer, the c-axis of columnar grains is fairly aligned in the direction perpendicular to the substrate surface. The preferred orientation of c-axis produces the magnetic anisotropy of the thick-films.
AB - Microstructure of the anisotropic Nd-Fe-B thick-film magnets has been investigated by transmission electron microscopy. Specimens of the thick-film magnets were prepared by the high-speed pulsed laser deposition method with a substrate heating system. It was revealed that the film deposited on a Ta substrate has a three-layer structure of Nd2Fe14: The lower layer is composed of isotropic grains about 50-300 nm in diameter, the middle one has a columnar structure of 1 μm in height, and the upper one is again composed of small isotropic grains about several ten nm in diameter. The three-layer-structure is explained to result from a partial recrystallization of micro-crystalline Nd2Fe14B that are formed at the moment of deposition. In the middle layer, the c-axis of columnar grains is fairly aligned in the direction perpendicular to the substrate surface. The preferred orientation of c-axis produces the magnetic anisotropy of the thick-films.
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U2 - 10.4028/0-87849-462-6.1131
DO - 10.4028/0-87849-462-6.1131
M3 - Conference contribution
AN - SCOPUS:38349183652
SN - 0878494626
SN - 9780878494620
T3 - Materials Science Forum
SP - 1131
EP - 1134
BT - Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
PB - Trans Tech Publications Ltd
T2 - 6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Y2 - 5 November 2007 through 9 November 2007
ER -