V., Aswin and Dogra, Anjana and Gupta, Anurag and Pulikkotil, J. J. (2016) Retentivity of spin state transitions in LaCoO3 with chemical disorder. RSC Advances , 6 (2). pp. 1403-1407. ISSN 2046-2069

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By means of structural refinements, magnetic susceptibility measurements and density functional theory based calculations; we study the physical properties of LaCoO3 with Al substitutions. Despite Al substitutions, which result in a reduction of unit-cell volume, increased chemical disorder, and local octahedral distortions, we find that the thermally mediated low-spin and high-spin states in LaCoO3 survive against the odds. The observed relative shift of the low-spin and high-spin representative peaks in the magnetic susceptibility data is determined to be of electronic origin via a change in the material's chemical bonding properties. Our study reveals a strong interplay between bonding and disorder for the temperature dependent spin states of LaCoO3.

Item Type: Article
Subjects: Chemistry
Depositing User: Dr. Rajpal Walke
Date Deposited: 17 Apr 2018 12:03
Last Modified: 17 Apr 2018 12:03
URI: http://npl.csircentral.net/id/eprint/2346

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