Inhomogeneous magnetic behavior of Pr0.7Ca0.3CoO3 and Nd0.7Ca0.3CoO3
Asish K. Kundu, E.V. Sampathkumaran, K.V. Gopalakrishnan, C.N.R. Rao
TL;DR
This study investigates the magnetic properties of Pr0.7Ca0.3CoO3 and Nd0.7Ca0.3CoO3, revealing inhomogeneous magnetic behavior with small ferromagnetic clusters within an antiferromagnetic matrix, unlike related compounds.
Contribution
It provides detailed insights into the inhomogeneous magnetic states of Pr0.7Ca0.3CoO3 and Nd0.7Ca0.3CoO3, highlighting the presence of ferromagnetic clusters in an antiferromagnetic background.
Findings
Lack of distinct ferromagnetic transitions in Pr0.7Ca0.3CoO3 and Nd0.7Ca0.3CoO3.
Presence of small ferromagnetic clusters within an antiferromagnetic host.
Magnetic behavior similar to frustrated magnetic systems.
Abstract
Unlike La0.7Ca0.3CoO2.97, Pr0.7Ca0.3CoO3 and Nd0.7Ca0.3CoO2.95 do not show distinct ferromagnetic transitions, but instead they exhibit very low magnetic moments down to 50 K. A detail study of magnetic properties of Pr0.7Ca0.3CoO3 and Nd0.7Ca0.3CoO2.95 shows that the materials are inhomogeneous, exhibiting properties similar to those of frustrated magnetic systems. In both these cobaltates, small ferromagnetic clusters seem to be present in an antiferromagnetic host.
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