Abstract
In the present study, an attempt has been taken to probe the meta-stable nature of the magnetic ground state in the nanocrystalline La0.45Ca0.55MnO3 compound at the low temperature through magnetic and magneto-transport properties and compared the results from the observation with the bulk polycrystalline form of the La0.45Ca0.55MnO3 compound. The charge-ordered antiferromagnetic ground state in the bulk compound transformed into a ferromagnetic state in the nanocrystalline sample. Additionally, in the nanocrystalline form of the compound, a short-range antiferromagnetic correlation between the blocked spin is noticed at the low temperature region (T ⩽ 50 K). Such weak magnetic interaction between magnetic spins or sublattices is probed through the magneto-transport and magnetocaloric measurements study in the nanocrystalline La0.45Ca0.55MnO3 compound.
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