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Home > Issues > Volume 5 (2000) > No.3(pp.73-109)Oxygen Stoichiometry Modification by O2-Plasma Treatment in La0.7Ca0.3MnO3-δ
Journal of Magnetics, Volume 5, Number 3, 30 Sep 2000, Pages 99-101
H. S. Kim(Department of Physics Korea University), C. H. Lee(Department of Physics Korea University), Cheol-Eui Lee* 
(Department of Physics Korea University), Y. H. Jeong(Department of Physics Pohang University of Science and Technology), N. H. Hur(Korea Research Institute of Standards and Science)
(Department of Physics Korea University), Y. H. Jeong(Department of Physics Pohang University of Science and Technology), N. H. Hur(Korea Research Institute of Standards and Science)
Abstract
Oxygen-plasma effects of single crystal and thin film samples of La0.7Ca0.3MnO3-δ have been studied. Our resistivity measurements indicate that oxygen plasma treatment gives rise to oxygen diffusion into bulk regions, which results in a decrease of Mn3+ concentration in oxygen nonstoichiometric La0.7Ca0.3MnO3-δ and in the activation energies of Holstein's small polarons in the paramagnetic region.
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