DocumentCode :
72402
Title :
Nanocomposite Nd-Fe-B/ 
-Fe Thick-Film Magnets Prepared by Vacuum Arc Deposition
Author :
Nakano, M. ; Tsutsumi, Takuya ; Yanai, Takeshi ; Fukunaga, Hirotoshi
Author_Institution :
Grad. Sch. of Eng., Nagasaki Univ., Nagasaki, Japan
Volume :
50
Issue :
11
fYear :
2014
fDate :
Nov. 2014
Firstpage :
1
Lastpage :
3
Abstract :
Isotropic Nd-Fe-B thick-film magnets were prepared by a vacuum arc deposition method followed by a pulse-annealing process. This paper reports the effect of discharge energy of the arc deposition on the magnetic properties of nanocomposite Nd-Fe-B/α-Fe thick-film magnets with Nb additive. Although the deposition rate decreased from approximately 20 to 5 μm/h due to the decrease in the energy from 44 to 11 J, the value of (BH)max could be improved by approximately 15 kJ/m3. The result is considered to be attributed to the reduction in the the numbers and/or size of droplets. Resultantly, we could obtain a 29 μm thick Nd-Fe-B thick-films with the remanence, coercivity, and (BH)max values of 0.92 T, 390 kA/m, and 79 kJ/m3, respectively.
Keywords :
annealing; boron alloys; coercive force; iron alloys; magnetic thin films; metallic thin films; nanocomposites; nanofabrication; nanomagnetics; neodymium alloys; remanence; vacuum deposition; NdFeB-Fe; coercivity; discharge energy; isotropic thick-film magnet; magnetic properties; nanocomposite thick-film magnet; pulse-annealing process; remanence; vacuum arc deposition; Additives; Discharges (electric); Magnetic properties; Niobium; Perpendicular magnetic anisotropy; Remanence; Droplets; Nd-Fe-B; nanocomposite magnets; thick-film magnets; vacuum arc deposition (VAD);
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2014.2330849
Filename :
6971706
Link To Document :
