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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
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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