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Ferromagnetische Schichten - Wandflattern

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Formal Metadata

Title Ferromagnetische Schichten - Wandflattern
Alternative Title Ferromagnetic Films - Wall Fluctuation
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-1595
IWF Signature E 1595
Publisher IWF (Göttingen)
Release Date 1970
Language Silent film
Producer IWF
Production Year 1967

Technical Metadata

IWF Technical Data Film, 16 mm, 87 m ; SW, 8 min

Content Metadata

Subject Area Physics
Abstract Blochwand-Verhalten von Nickeleisenschichten unter Einwirkung steiler Feldimpulse. Wandflattern als Folge der Präzession der Wandmagnetisierung um das Impulsfeld. Randstreufelder.
The Bloch wall streaming in evaporated anisotropic 81/19 Ni-Fe films between 150 and 240 nm thick is shown. It has been made visible by means of the Kerr magnetooptic effect. Wall streaming is observed in case a pulse field with a rise time smaller than 20 ns is applied along the hard axis. It consists of small wall steps induced by the gyromagnetic precession of the wall center spins around the rising pulse field. It is, therefore, an impressive demonstration of the connection between the magnetization and the electronic spin. The following topics are shown: 1. Wall streaming including the domain nucleation at the films edge, in a film of 2 mm diameter for different pulse amplitudes. 2. Wall streaming in the central part (nearly not influenced by edge stray fields) of a film of 4 mm diameter, for different pulse amplitudes. 3. Wall streaming in a pulse field of especially low repetition rate (1 instead of 4 pulses per picture frame) for one pulse amplitude.
Keywords Weißsche Bezirke
Domänen, ferroelektrische
Nickeleisenschichten / Blochwand-Verhalten
ferroelektrische Domänen
ferroelectric domains
domains, ferroelectric
Nickel-ferric-layers / Bloch wall behaviour
Weiss domains


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