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Non-equilibrium Magnetic Properties of Single Crystalline La0.7Ca0.3CoO3

Asish K. Kundu·P. Nordblad·C. N. R. Rao
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Abstract

Magnetic and electric properties of a single crystal of La0.7Ca0.3CoO3 have been experimentally studied. The system attains a ferromagnetic spontaneous moment below 170 K and exhibits a re-entrant spin-glass phase below 100 K. In the ordered and the re-entrant phases, the low field magnetic properties are strongly direction dependent, showing considerably higher magnetization values perpendicular than parallel to the c-axis. Magnetic relaxation experiments show that both the ferromagnetic and the re-entrant spin-glass phases are non-equilibrium states, where the system exhibits magnetic aging characteristic of spin-glasses and disordered and frustrated ferromagnets.

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Asish K. Kundu, P. Nordblad, C. N. R. Rao. 2005-11-03. Non-equilibrium Magnetic Properties of Single Crystalline La0.7Ca0.3CoO3. https://doi.org/10.1103/physrevb.72.144423

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