Spontaneous generation of electric voltage in a single crystal of Sm0.55Sr0.45MnO3 |
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| Authors: | D. M. Zashchirinskii L. I. Koroleva A. S. Morozov R. Shimchak |
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| Affiliation: | 1.Moscow State University,Moscow,Russia;2.Institute of Physics,Polish Academy of Sciences,Warszawa,Poland |
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| Abstract: | Spontaneous generation of electric voltage has been found in a Sm0.55Sr0.45MnO3 single crystal grown by floating zone melting with cooling in oxygen. The maximum voltage of 60 μV has been observed in the region of temperatures corresponding, simultaneously, to destruction of the CE-type antiferromagnetic ordering and charge ordering in some clusters. The maximum voltage remains unchanged for 24 h and decreases by 45% in a magnetic field of 14.2 kOe. It has been shown that the spontaneous voltage is caused by the presence of regions with different electric charges in the sample. |
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