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Magnetic avalanche-like behavior in disordered manganite (Eu0.4La0.1)(Sr0.4Ca0.1)MnO3

D. S. Rana·S. K. Malik
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Abstract

The half-doped manganite, (Eu0.4La0.1)(Sr0.4Ca0.1)MnO3, has been found to exhibit sharp step-like metamagnetic transitions below 5 K. The number of magnetic steps increases with decreasing temperature and this number suddenly rises from 3 at 2 K to ~50 at 1.7 K. The self-similar character of the multiple magnetic steps at reduced temperature identifies these steps as avalanche-like transitions. The occurrence of a multitude of magnetic steps at low temperatures, the decreasing effect of magnetic field sweep rate on the step-like metamagnetism, and the decreasing irreversibility of transition in the specific heat suggest that reduced spin-lattice coupling facilitates the transformation of antiferromagnetic to ferromagnetic state via an avalanche-like behavior.

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D. S. Rana, S. K. Malik. 2006-08-04. Magnetic avalanche-like behavior in disordered manganite (Eu0.4La0.1)(Sr0.4Ca0.1)MnO3. https://doi.org/10.1103/physrevb.74.052407

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