Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
권호 표지

Oxygen Stoichiometry Modification by $O_2$-Plasma Treatment in $La_{0.7}Ca_{0.3}MnO_{3-\delta}$

  • Kim, H. S. (Department of Physics Korea University) ;
  • Lee, C. H. (Department of Physics Korea University) ;
  • Lee, Cheol-Eui (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)
  • Published : 2000.09.01
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Abstract

Oxygen-plasma effects of single crystal and thin film samples of $La_{0.7}Ca_{0.3}MnO_{3-\delta}$ 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 $Mn^{3+}$ concentration in oxygen nonstoichiometric $La_{0.7}Ca_{0.3}MnO_{3-\delta}$ and in the activation energies of Holstein's small polarons in the paramagnetic region.

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References

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