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Ferromagnetische Schichten - Barkhausen-Sprünge

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Formal Metadata

Title Ferromagnetische Schichten - Barkhausen-Sprünge
Alternative Title Ferromagnetic Films - Barkhausen Effect
Author Feldtkeller, Ernst
Stein, Karl U.
License No Open Access License:
German copyright law applies. This film may be used for your own use but it may not be distributed via the internet or passed on to external parties.
DOI 10.3203/IWF/E-1593
IWF Signature E 1593
Publisher IWF (Göttingen)
Release Date 1970
Language Silent film
Producer IWF
Production Year 1967

Technical Metadata

IWF Technical Data Film, 16 mm, 54 m ; SW, 5 min

Content Metadata

Subject Area Physics
Abstract Ummagnetisierung von Nickeleisenschichten im magnetischen Gleichfeld. Barkhausen-Sprünge der Domänenwände: große Sprünge der gradlinigen Wände einer homogenen Schicht, Keimbildung am Schichtrand und unregelmäßige Wandkonfiguration einer Schicht mit inhomogenen magnetischen Eigenschaften.
The magnetization reversal of evaporated anisotropic 81/19 Ni-Fe films between 50 and 250 nm thick is shown, for a slowly increased magnetic dc field oriented parallel to their easy axis. The magnetization reversal consists of Barkhausen jumps of the domain walls. They have been made visible in polarized light by means of the Kerr magnetooptical effect. The following topics are shown: 1. The large Barkhausen jumps of the straight walls in a relatively homogeneous film. 2. The domain nucleation in a film the edge of which is visible as well. 3. The irregular domain walls in a film with relatively inhomogeneous magnetic properties.
Keywords Weißsche Bezirke
Domänen, ferroelektrische
ferroelektrische Domänen
Barkhausen jumps
Barkhausen effect
ferroelectric domains
domains, ferroelectric
Weiss domains


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