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Journal of the Korean Ceramic Society 1999;36(1): 50. |
양이온 결손 La$_{0.970}$Mn$_{0.970}$O$_3$의 X-ray Photoemission Spectroscopy 관측 |
정우환 |
호원대학교 전자공학과 |
X-ray Photoemission Spectroscopy Study of Cation-Deficient La$_{0.970}$Mn$_{0.970}$O$_3$ System |
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ABSTRACT |
We have measured the x-ray photoemission spectroscopy of cation deficient La0.970Mn0.970O3 as a function of temperature. Detailed results on the chemical shifts and changes in Mn 2p and Lp 3d core levels due to variation of temperature have been obtained. The Mn 2p 3/2 and 1/2 main peaks and La 3d core spectrum shift to lower binding energy levels with increasing temperature. This XPS behavior is correlated with the strength of localization of Mn3+. The Jahn-Teller effect due to Mn3+ besides the conventional random potential effects is likely to localize charge carriers in La-.970Mn0.970O3. |
Key words:
X-ray photoemission spectroscopy, Jahn-Teller effect, Small polaron, Conventional random potential effect |
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