Coercivity enhancement of (Nd,Ce)-Fe-B sintered magnets by doping Nd-Fe additives
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چکیده
منابع مشابه
Coercivity enhancement of Nd-Fe-B sintered magnets by grain boundary modification via reduction-diffusion process
The interface between the Nd2Fe14B particles and the grain boundary surrounding them in Nd-Fe-B sintered magnets was modified by diffusion Dy metal selectively through the grain boundary involving the reduction of Dy2O3 or DyF3 with CaH2 and the coercivity of them was effectively enhanced from 0.98 MA/m to 1.42 MA/m with keeping the high value of remanence. The resultant coercivity was higher t...
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Statistical methods are used to estimate coercivity J Hc and thermal remagnetization of uniaxially nucleationcontrolled permanent magnetic materials. Sintered Nd-Fe-B consists of the tetragonal magnetic Nd2FelrB phase with a volume fraction w = 80 % and of nonmagnetic phases. At temperatures above T, rz 150 K the tetragonal axis is the easy direction of magnetization [I]. It is well known [2] t...
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For the study of the relationship between the domain wall motion (DWM) and the coercivity in the samples of Dy-free Nd-Fe-B sintered magnets, the DC susceptibility (χDC) in the initial magnetization from the thermally demagnetized state and the DWM in the partially demagnetized state after the full magnetization in 5T-pulse field were measured. In the high coercivity (μ0Hc) samples of μ0Hc=1.35...
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ژورنال
عنوان ژورنال: AIP Advances
سال: 2017
ISSN: 2158-3226
DOI: 10.1063/1.4976722