Journal
EUROPEAN PHYSICAL JOURNAL B
Volume 76, Issue 2, Pages 215-219Publisher
SPRINGER
DOI: 10.1140/epjb/e2010-00203-6
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Funding
- Deutsche Forschungsgemeinschaft [FOR 520]
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We investigate the structure and magnetic properties of thin films of the LaCoO3 compound. Thin films are deposited by pulsed laser deposition on various substrates in order to tune the strain from compressive to tensile. Single-phase (001) oriented LaCoO3 layers were grown on all substrates despite large misfits. The tetragonal distortion of the films covers a wide range from -2% to 2.8%. Our LaCoO3 films are ferromagnetic with Curie temperature around 85 K, contrary to the bulk. The total magnetic moment is below 1 mu (B) /Co3+, a value relatively small for an exited spin-state of the Co3+ ions, but comparable to values reported in literature. A correlation of strain states and magnetic moment of Co3+ ions in LaCoO3 thin films is observed.
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