Abstract
A magnetooptic method is used to study the effect of nonuniform radial mechanical stresses on the domain structure, magnetic susceptibility, and magnetic hysteresis loops of a FeBO3 single crystal. When a magnetic field is applied in the basal plane of FeBO3 along the stress vector, a system of tapered domains appears in the crystal during magnetization. These domains exist in a certain temperature-dependent field range H 0 ≤ H ≤ H c . The appearance of a system of tapered domains is found to substantially affect the technical magnetization of a stressed crystal. The results obtained are discussed within the thermodynamic theory of a domain structure. A theoretical model used is shown to adequately describe the experimental temperature and field dependences of the ratio \({D \mathord{\left/ {\vphantom {D {\sqrt L }}} \right. \kern-\nulldelimiterspace} {\sqrt L }}\) (where D and L are the average width and length of a tapered domain, respectively). The calculated value of D is approximately 1.3 times smaller than the experimentally observed domain width.
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Translated from Fizika Tverdogo Tela, Vol. 47, No. 9, 2005, pp. 1644–1650.
Original Russian Text Copyright © 2005 by Sokolov.
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Sokolov, B.Y. Effect of nonuniform mechanical stresses on the domain structure of iron borate. Phys. Solid State 47, 1707–1713 (2005). https://doi.org/10.1134/1.2045356
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DOI: https://doi.org/10.1134/1.2045356