TITLE

Ferromagnetic spin-correlations in strained LaCoO3 thin films

AUTHOR(S)
Freeland, J. W.; Ma, J. X.; Shi, J.
PUB. DATE
November 2008
SOURCE
Applied Physics Letters;11/24/2008, Vol. 93 Issue 21, p212501
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present an element-resolved study of the valence and magnetic properties of LaCoO3 thin films grown via pulsed laser deposition. The Co L edge x-ray absorption shows that ferromagnetic (FM) order arises from a slight hole doping of the system presumably due to nonstoichiometry, which in the bulk system disrupts the low-spin state. However, even though the films are hole doped, the magnetic moments under tensile strain are much larger than the bulk system indicating that the strain can greatly increase the FM fraction observed in the spin-glass regime at low doping.
ACCESSION #
35605072

 

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