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Kinetics of magnetization reversal in a thin La0.7Sr0.3MnO3 manganite film

  • Proceedings of the International Symposium “Order, Disorder, and Properties of Oxides” (ODPO-11)
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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

The kinetics of magnetization reversal of a thin LSMO film has been studied for the first time. It is shown that the magnetic domain structure critically depends on the conditions of structure formation. In the demagnetized state (after zero-field cooling from T c ), a maze-like domain microstructure with perpendicular magnetization is formed in the film. However, after field cooling and/or saturating magnetization by a field of arbitrary orientation, the [110] direction of spontaneous magnetization in the film plane is stabilized; this pattern corresponds to macrodomains with in-plane magnetization. Further film magnetization reversal (both quasi-static and pulsed) from this state is implemented via nucleation and motion of 180° “head-to-head” domain walls. Upon pulse magnetization reversal, the walls “jump” at a distance proportional to the applied field strength and then undergo thermally activated drift. All dynamic characterisitcs critically depend on the temperature when the latter varies around the room temperature.

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Authors and Affiliations

  1. Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moskovskaya obl., 142432, Russia

    L. S. Uspenskaya & I. V. Kurbatova

  2. Institute of Electronics, Bulgarian Academy of Sciences, Tsarigradsko sh. 72, Sophia, 1784, Bulgaria

    G. Nurgaliev & S. Miteva

Authors
  1. L. S. Uspenskaya
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  2. I. V. Kurbatova
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  3. G. Nurgaliev
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  4. S. Miteva
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Corresponding author

Correspondence to L. S. Uspenskaya.

Additional information

Original Russian Text © L.S. Uspenskaya, I.V. Kurbatova, G. Nurgaliev, S. Miteva, 2009, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2009, Vol. 73, No. 8, pp. 1172–1174.

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Uspenskaya, L.S., Kurbatova, I.V., Nurgaliev, G. et al. Kinetics of magnetization reversal in a thin La0.7Sr0.3MnO3 manganite film. Bull. Russ. Acad. Sci. Phys. 73, 1110–1112 (2009). https://doi.org/10.3103/S1062873809080267

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  • DOI: https://doi.org/10.3103/S1062873809080267

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