1. M\'{o}ssbauer Effect Probe of Local Jahn-Teller distortion in Fe-doped Colossal Magnetoresistive Manganites
- Author
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Cheng, Zhao-hua, Wang, Zhi-hong, Di, Nai-li, Kou, Zhi-qi, Wang, Guang-jun, Li, Rui-wei, Lu, Yi, Li, Qing-an, Shen, Bao-gen, and Dunlap, R. A.
- Subjects
Condensed Matter - Materials Science - Abstract
Local structure of the Fe-doped La$_{1-x}$Ca$_{x}$MnO$_{3}$ (x=0.00-1.00) compounds has been investigated by means of M\"{o}ssbauer spectroscopy. $^{57}$Fe M\"{o}ssbauer spectra provide a direct evidence of Jahn-Teller distortion in these manganites. On the basis of M\"{o}ssbauer results, the Jahn-Teller coupling was estimated. It is noteworthy that Ca-concentration dependence of Jahn-Teller coupling strength is very consistent with the magnetic phase diagram. Our results reveal that M\"{o}ssbauer spectroscopy can not only detect the local structural distortion, but also provide a technique to investigate Jahn-Teller coupling of Fe-doped La$_{1-x}$Ca$_{x}$MnO$_{3}$ colossal magnetoresistive perovskites., Comment: 3 figures, will appear in Applied Physics Letters
- Published
- 2003
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