INVESTIGATION OF THE EFFECTS OF SAMPLE-SIZE ON THE COERCIVITY OF GARNET-FILMS

Vértesy, Gábor and Bodis, L. and Tomas, I. and Pust, L. (1989) INVESTIGATION OF THE EFFECTS OF SAMPLE-SIZE ON THE COERCIVITY OF GARNET-FILMS. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 22 (11). pp. 1742-1745. ISSN 0022-3727

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Abstract

The coercivity of epitaxial magnetic garnet films measured by the domain-wall-oscillation methods depends on the size of the sample. It is shown that this effect is characteristic of only the wall-oscillation method. A direct, empirical correlation was found between the mechanical stresses of the sample and its magnetic parameters. It was concluded that any effect of a modification of mechanical stresses resulting from cutting of the sample can be disregarded as a possible contribution to the effect of sample size on coercivity.

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