Ferrimagnetism in PrCoO${}_{3}$ epitaxial films

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Ferrimagnetism in PrCoO $_{3}$ epitaxial films

Virat V. Mehta, Shameek Bose, Jodi M. Iwata-Harms, Elke Arenholz, C. Leighton, and Y. Suzuki

Phys. Rev. B 87, 020405(R) – Published 15 January 2013

Abstract

We demonstrate the stabilization of a ferrimagnetic ground state in epitaxial films of PrCoO $_{3}$ grown on SrTiO $_{3}$ (001) substrates, in stark contrast to paramagnetic behavior observed in bulk. Heteroepitaxial strain is found to induce long-range ordering of the Co ions, which we deduce to be in a high-spin state. The ferromagnetic ordering of the CoO $_{6}$ array is accompanied by ordering of the Pr sublattice in an antiparallel orientation to the Co. The ordering of the Pr sublattice provides evidence for significant Co-Pr exchange likely facilitated by the presence of high-spin Co.

Received 19 June 2012

DOI:https://doi.org/10.1103/PhysRevB.87.020405

Authors & Affiliations

Virat V. Mehta^1,2, Shameek Bose³, Jodi M. Iwata-Harms¹, Elke Arenholz⁴, C. Leighton³, and Y. Suzuki^1,2,5

¹Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA
²Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
³Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
⁴Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
⁵Department of Applied Physics and Geballe Lab for Advance Materials, Stanford University, Stanford, California 94305, USA

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Vol. 87, Iss. 2 — 1 January 2013

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