TY - JOUR
T1 - Isotropic Nd-Fe-B thick-film magnets applied for micro-rotors prepared by PLD method
AU - Nakano, Masaki
AU - Itakura, Masaru
AU - Yanai, Takeshi
AU - Yamashita, Fumitoshi
AU - Fukunaga, Hirotoshi
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - The flexibility of magnetization of isotropic thick-film magnets enabled us to enhance the torque of a millimeter-size motor comprising a multi-polar magnetized rotor compared to the torque of a miniaturized motor using an anisotropic Nd-Fe-B sintered magnet. In order to upgrade the torque of the small motor further, increase in the remanence value of the isotropic films is indispensable. In this study, therefore, we prepared nano-composite Nd-Fe-B thick-films by using a high-speed PLD (Pulsed Laser Deposition) method with the deposition rate of approximately 40 μm/h. Resultantly, use of additive (Zr or Nb) was effective to enhance the coercivity value of Nd-Fe-B thick-film magnets with Nd-poor composition, however it was difficult to increase the values of remanence. In order to apply the thick films to a micro-rotor, investigation on several experiments related to mechanical property was also carried out.
AB - The flexibility of magnetization of isotropic thick-film magnets enabled us to enhance the torque of a millimeter-size motor comprising a multi-polar magnetized rotor compared to the torque of a miniaturized motor using an anisotropic Nd-Fe-B sintered magnet. In order to upgrade the torque of the small motor further, increase in the remanence value of the isotropic films is indispensable. In this study, therefore, we prepared nano-composite Nd-Fe-B thick-films by using a high-speed PLD (Pulsed Laser Deposition) method with the deposition rate of approximately 40 μm/h. Resultantly, use of additive (Zr or Nb) was effective to enhance the coercivity value of Nd-Fe-B thick-film magnets with Nd-poor composition, however it was difficult to increase the values of remanence. In order to apply the thick films to a micro-rotor, investigation on several experiments related to mechanical property was also carried out.
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U2 - 10.1541/ieejfms.132.844
DO - 10.1541/ieejfms.132.844
M3 - Article
AN - SCOPUS:84867358435
SN - 0385-4205
VL - 132
SP - 844
EP - 848
JO - IEEJ Transactions on Fundamentals and Materials
JF - IEEJ Transactions on Fundamentals and Materials
IS - 10
ER -