Anomalous behaviour of minor magnetic hysteresis loops in garnet films

Vértesy, Gábor and Magni, A. (2001) Anomalous behaviour of minor magnetic hysteresis loops in garnet films. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 34 (1). pp. 48-53. ISSN 0022-3727

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Abstract

The widths of the minor hysteresis loops were investigated in epitaxially grown uniaxial magnetic garnet films as a function of the maximal magnetic field at the end of the loops. An anomalous behaviour of the minor loops was observed in several samples: the width of a minor loop decreased with increasing maximal field. The phenomenon was interpreted on the basis of domain wall nucleation. Different coercive fields (the domain wall coercive field, H-cw, and the technical coercive field, H-ct) and their relation were also discussed.

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