Néel wall

Néel wall

A Néel wall is a narrow transition region between magnetic domains. In the Neel wall, the magnetisation rotates from the direction of the first domain to the direction of the second, with a rotation axis that is parallel to the wall plane. It consists of a core with fast varying rotation and two tails where the rotation logarithmically decays. Néel walls are the common magnetic domain wall type in very thin film where the exchange length is very large compared to the thickness. Néel walls would spread across the whole volume if it weren't for magnetic anisotropy.

Néel walls are named after the French physicist Louis Néel.

Another type of transition region is the Bloch wall were the magnetisation rotates along an axis that is perpendicular to the plane of the wall. Bloch walls are more common in thicker materials.

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Neel Kashkari — Born July 30, 1973 (1973 07 30) (age 38) Akron, Ohio Alma mater University of Illi …   Wikipedia

  • Bloch wall — A Bloch wall is a narrow transition region at the boundary between magnetic domains, over which the magnetisation changes from its value in one domain to that in the next. The magnetisation rotates through the plane of the wall unlike the Néel… …   Wikipedia

  • Domain wall — A domain wall is a term used in physics which can have one of two distinct but similar meanings in magnetism, optics, or string theory. These phenomena can all be generically described as topological solitons which occur whenever a discrete… …   Wikipedia

  • Ferromagnetism — Not to be confused with Ferrimagnetism; for an overview see Magnetism A magnet made of alnico, an iron alloy. Ferromagnetism is the physical theory which explains how materials become magnets. Ferromagnetism is the basic mechanism by which… …   Wikipedia

  • Art, Antiques, and Collections — ▪ 2003 Introduction       In 2002 major exhibitions such as Documenta 11 reflected the diverse nature of contemporary art: artists from a variety of cultures received widespread recognition for work ranging from installation to video to painting …   Universalium

  • 2007-08 A1 Grand Prix of Nations, Mexico — A1GP race summary v2 country race=Mexico race no=8 of 10 season=2007 08 race circuit=Autódromo Hermanos Rodríguez.svg date=March 16, 2008 circuit=Autódromo Hermanos Rodríguez city=Mexico City country=Mexico weather=dry pole pole team=South Africa …   Wikipedia

  • Anthropology and Archaeology — ▪ 2009 Introduction Anthropology       Among the key developments in 2008 in the field of physical anthropology was the discovery by a large interdisciplinary team of Spanish and American scientists in northern Spain of a partial mandible (lower… …   Universalium

  • 2007-08 A1 Grand Prix of Nations, South Africa — A1GP race summary v2 country race=South Africa race no=7 of 10 season=2007 08 race circuit=Durban street circuit.svg date=February 24, 2008 circuit=Durban street circuit city=Durban country=South Africa weather=Dry pole pole team=Canada pole… …   Wikipedia

  • Tulpa — Part of a series on Tibetan Buddhism …   Wikipedia

  • Masud Rana —   Cover of a typical Masud Rana book titled Shei Kuasha …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”