Oxygen-plasma effects of a La[sub 0.7]Ca[sub 0.3]MnO[sub 3-δ] single crystal

Kim, H. S.; Lee, C. H.; Lee, Cheol Eui; Kim, K. M.; Noh, S. J.; Hong, C. S.; Hur, N. H.; Shim, S. Y.; Ri, H.-C.
December 2001
Applied Physics Letters;12/17/2001, Vol. 79 Issue 25, p4177
Academic Journal
A La[sub 0.7]Ca[sup 0.3]MnO[sub 3 &minus δ] single crystal was oxygen-plasma treated at 200 °C. Our electrical and magnetic measurements indicate that the oxygen-plasma treatment can be an effective low temperature method of oxygen stoichiometry modification of colossal magnetoresistance manganites. The oxygen plasma is also shown to introduce structural defects, whose effects are prominent near the Curie temperature (T[sub c]), giving rise to anomalies in the resistivity and magnetic behaviors. © 2001 American Institute of Physics. [DOI: [10.1063/1.1425085].


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