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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2008.3
- 수록면
- 23 - 29 (7page)
이용수
초록· 키워드
오류제보하기
The magnetic and other physical characteristics of Mn<SUB>x</SUB>Si<SUB>1-x</SUB>Te have been investigated by electron magnetic resonance (EMR), X-ray diffraction (XRD) and other experiments. Mn<SUB>x</SUB>Si<SUB>1-x</SUB>Te is found to have corundum structure for manganese contents up to 10% and also to be ferromagnetic for temperatures below 80 K. While ferromagnetic resonance signal coexists with the usual paramagnetic resonance signal, invariance of the g-factor inferred from the electron paramagnetic resonance signals throughout all temperature ranges clearly con-firms that the manganese ions are in the electronic 3d? state. The temperature dependence of EMR line-width is the same as other diluted magnetic semiconductors. From the EMR signals relaxation times T₂ and T₁ of Mn<SUB>x</SUB>Si<SUB>1-x</SUB>Te compounds are estimated to be about 4.4×10?¹?s and 9.3×10??s respectively and are found to vary slightly with temperature or composition change. Exchange narrowing of the EMR line-width becomes dominant for the sample in which the substitution ratio, x = 30%. For one sample, in which x = 0.5%, spin glass-like behavior is indicated by EMR signals for temperatures lower than 60 K. This behavior may authentic for samples within a certain range of x.
목차
1. Introduction
2. Characterizations
3. Results and Discussion
4. Conclusion
Acknowledgement
References
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