Journal
CHEMISTRY OF MATERIALS
Volume 25, Issue 1, Pages 55-58Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm3031472
Keywords
thin-film solution synthesis; spin-state transition
Funding
- Ministerio de Economia y Competitividad [MAT2010-16157]
- FPI program
- U.S. Department of Energy through the Center for Integrated Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy Sciences
- National Nuclear Security Administration of the U.S. Department of Energy [DE-AC52-06NA25396]
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High quality epitaxial thin films of LaCoO3 on SrTiO3 have been prepared by spin-coating of a metal/polymeric aqueous solution. The films (approximate to 17 nm) are homogeneous and smooth over large areas. The characteristic low-spin (LS) state is replaced by a higher spin configuration of Co(III), due to strain-induced distortions of the CoO6 octahedra, introducing a ferromagnetic interaction and negative magnetoresistance below T-C = 85 K. This simple chemical method produces the high-quality films required for either fundamental studies or applications, similar to physical deposition techniques.
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