Mechanisms of magnetic and temperature hysteresis in ErFeO3 and TmFeO3 single crystals

Magnetic hysteresis is studied in the orthoferrites ErFeO3 and TmFeO3 using the single crystal samples of millimeter dimensions. It is shown that in both materials one observes a temperature transition manifesting itself through the temperature hysteresis of the magnetic moment and a peculiar temper...

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Bibliographic Details
Published in:Journal of applied physics 2010-10, Vol.108 (8)
Main Authors: Tsymbal, L. T., Bazaliy, Ya. B., Kakazei, G. N., Vasiliev, S. V.
Format: Article
Language:English
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Summary:Magnetic hysteresis is studied in the orthoferrites ErFeO3 and TmFeO3 using the single crystal samples of millimeter dimensions. It is shown that in both materials one observes a temperature transition manifesting itself through the temperature hysteresis of the magnetic moment and a peculiar temperature evolution of the field hysteresis loop shapes near this transition. Experiments rule out the hypothesis that the ordering of the orthoferrite’s rare-earth magnetic moments plays an important role in these phenomena. The hysteresis curves can be explained by a few-domain magnetic state of the samples that results from the weak ferromagnetism of the orthoferrites. The phenomenon is generic for weak ferromagnets with temperature dependent magnetization. A large characteristic magnetic length makes the behavior of the relatively big samples analogous to that observed in the nanosize samples of strong ferromagnets.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3499616