Effects of shape and number of grains on the demagnetization curve calculated for nanocrystalline Nd2Fe14B magnets

2005 ◽  
Vol 364 (1-4) ◽  
pp. 273-278 ◽  
Author(s):  
Yu Yan ◽  
Mingbo Liu ◽  
Hanmin Jin ◽  
Xuefeng Wang ◽  
Xiaobo Du ◽  
...  
Keyword(s):  
Demagnetization Curve

Estimation of Demagnetization Curve of Magnet with Nonuniform Coercivity

2012 ◽  
Vol 132 (1) ◽  
pp. 101-107
Author(s):  
Takayuki Tokushige ◽  
Masafumi Umabuchi ◽  
Daisuke Miyagi ◽  
Norio Takahashi ◽  
Masaru Ito ◽  
...  
Keyword(s):  
Demagnetization Curve

MICROSTRUCTURE AND MAGNETIC PROPERTIES OF Sm2Fe17NNx−ALLOY- POWDERS AND OF BONDED ANISOTROPIC MAGNETS

1993 ◽  
Vol 07 (01n03) ◽  
pp. 716-720
Author(s):  
B. WALL ◽  
M. KATTER ◽  
W. RODEWALD ◽  
M. VELICESCU
Keyword(s):  
Solid Solution ◽  
Particle Size ◽  
Magnetic Properties ◽  
Average Particle Size ◽  
Average Particle ◽  
Interstitial Solid Solution ◽  
Demagnetization Curve ◽  
Microstructure And Magnetic Properties

In cast Sm2Fe17 ingots minor fractions of SmFe2 and SmFe3 may occur. Nitrogenation of such alloy-powders inidicates that only Sm2Fe17 forms an interstitial solid solution whereas SmFe2 and SmFe3 decompose directly into SmN and α-Fe. From Sm2Fe17Nx alloy powders with an average particle size of about 3 μm anisotropic magnets were prepared by adding 15 wt% Zn-powder. Annealing at 390 ºC results in intrinsic coercivities > 15 kOe promoted by the formation of an unknown binary Fe8Zn92-compound. Whereas annealing at temperatures > 420 ºC leads to the formation of binary Fe3Zn7 and ternary Sm2FeZn2. By the formation of Sm2FeZn2 from Sm2Fe17Nx+Zn some α-Fe occurs inducing a step in the demagnetization curve J(H).

Improvement of PM-TFMs Characteristics by Flux Path Guiding

2010 ◽  
Vol 670 ◽  
pp. 223-234
Author(s):  
P. Curiac ◽  
D.H. Kang
Keyword(s):  
Magnetic Flux ◽  
Permanent Magnet ◽  
Stator Winding ◽  
Permanent Magnet Machine ◽  
Demagnetization Curve ◽  
Leakage Flux ◽  
Flux Path

A study for the enhancement of effective magnetic flux of Permanent Magnet-Transversal Flux Machines using flux guiding is presented. By taking into account an intrinsic demagnetization curve which considers the leakage flux, the stator winding can be more compact; furthermore, a lighter stator and a more efficient permanent magnet machine can be obtained by using magnetic flux path guiding.

MAGNETIC INTERACTION OF THE COMPOSITE MIXTURES Nd-Fe-B/Sm2Co17

2006 ◽  
Vol 20 (24) ◽  
pp. 1543-1548 ◽  
Author(s):  
SHUXIN BAI ◽  
SHUN LI ◽  
HONG ZHANG ◽  
KE CHEN ◽  
HONGNIAN CAI
Keyword(s):  
Magnetic Field ◽  
Phase Behavior ◽  
Mass Fraction ◽  
Magnetic Particles ◽  
Single Phase ◽  
Magnetic Interaction ◽  
Demagnetization Curve ◽  
Energy Product ◽  
Bonded Magnet ◽  
Low Magnetic Field

Hybrid-bonded isotropic Nd-Fe-B /anisotropic Sm 2 Co 17 magnets with different mass fraction of Sm 2 Co 17 powders had been analyzed with the aid of magnetization and demagnetization curves. It was found that the Henkel plot of magnet with 10 wt.% Sm 2 Co 17 lies above the Wohlfarth line at low magnetic field but goes down slowly and then lies below the Wohlfarth line at high magnetic field. This shows magnetizing interaction at first and demagnetizing interaction at last, and presents an s-shaped behavior that has been seen frequently in nanocomposite exchange-coupled magnets. The demagnetization curve of 10 wt.% Sm 2 Co 17 content hybrid-bonded magnet exhibits a magnetically single phase behavior which has also been seen frequently in nanocomposite exchange-coupled magnets, indicating complex magnetic interaction between these two magnetic particles. As a result, a small increase in remanence and energy product are observed in hybrid-bonded Nd-Fe-B/Sm 2 Co 17 magnets with 10% mass fraction of Sm 2 Co 17.

Anisotropic characteristics of demagnetization curve for nanocrystalline Nd-Fe-B magnet calculated by micromagnetics

2001 ◽  
Vol 10 (9) ◽  
pp. 862-868 ◽  
Author(s):  
Jin Han-min ◽  
Wang Xue-feng ◽  
Zhao Su-fen ◽  
Yan Yu
Keyword(s):  
Demagnetization Curve
Sign in / Sign up

Export Citation Format

Share Document