Magnetic coercivity

1987 ◽  
Vol 65 (10) ◽  
pp. 1194-1199 ◽  
Author(s):  
Paul Gaunt
Keyword(s):  
Statistical Theory ◽  
Domain Wall ◽  
Permanent Magnets ◽  
Domain Wall Pinning ◽  
Magnetic Hardening

The theory of magnetic hardening and its impact on the design of permanent magnets is presented. The statistical theory of domain-wall pinning by sample inhomogeneities is outlined, and its relevance to the latest generation of permanent magnets is discussed.

scholarly journals The study of domain-wall pinning by inhomogeneities in nanocrystalline permanent magnets

2003 ◽  
Vol 52 (3) ◽  
pp. 708
Author(s):  
Rong Chuan-Bing ◽  
Zhang Hong-Wei ◽  
Zhang Jian ◽  
Zhang Shao-Ying ◽  
Shen Bao-Gen
Keyword(s):  
Domain Wall ◽  
Permanent Magnets ◽  
Domain Wall Pinning

scholarly journals Atomic structure and domain wall pinning in samarium-cobalt-based permanent magnets

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
M. Duerrschnabel ◽  
M. Yi ◽  
K. Uestuener ◽  
M. Liesegang ◽  
M. Katter ◽  
...  
Keyword(s):  
Domain Wall ◽  
Atomic Structure ◽  
Permanent Magnets ◽  
Domain Wall Pinning

A HYBRID MODEL ON HYSTERESIS LOOP AND COERCIVITY IN NANOSTRUCTURED PERMANENT MAGNETS

2006 ◽  
Vol 05 (04n05) ◽  
pp. 627-631 ◽  
Author(s):  
M. J. SUN ◽  
G. P. ZHAO ◽  
J. LIANG ◽  
G. ZHOU ◽  
H. S. LIM ◽  
...  
Keyword(s):  
Thin Films ◽  
Domain Wall ◽  
Grain Boundary ◽  
Magnetic Moment ◽  
Permanent Magnets ◽  
Hysteresis Loops ◽  
Bulk Materials ◽  
Rotational Model ◽  
Moment Distribution ◽  
Coercivity Mechanism

A simplified micromagnetic model has been proposed to calculate the hysteresis loops of nanostructured permanent magnets for various configurations, including thin films, exchange-coupled double-layer systems and bulk materials. The reversal part of the hysteresis is based on the Stoner–Wohlfarth coherent rotational model and the coercivity mechanism is due mainly to the motion of the transition region (a domain wall like magnetic moment distribution in the grain boundary). The elements of nucleation and pinning models are also incorporated.

Micromagnetic study of domain-wall pinning characteristics with grooves in thin films

2005 ◽  
Vol 97 (10) ◽  
pp. 10E317 ◽  
Author(s):  
H. Asada ◽  
H. Ii ◽  
J. Yamasaki ◽  
M. Takezawa ◽  
T. Koyanagi
Keyword(s):  
Thin Films ◽  
Domain Wall ◽  
Domain Wall Pinning
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