التفاصيل البيبلوغرافية
| العنوان: |
Muon spin relaxation study of spin-glass freezing in the Heusler compound Ru1.9Fe0.1CrSi. |
| المؤلفون: |
Hiroi, Masahiko1 hiroi@sci.kagoshima-u.ac.jp, Hisamatsu, Toru1, Suzuki, Takao2,3, Ohishi, Kazuki3,4, Ishii, Yasuyuki3,5, Watanabe, Isao3 |
| المصدر: |
Physical Review B: Condensed Matter & Materials Physics. Jul2013, Vol. 88 Issue 2, p024409-1-024409-5. 5p. |
| مصطلحات موضوعية: |
*MUON spin rotation, *MAGNETIC properties, *MAGNETIC fields, *MAGNETIC anomalies, *MAGNETIC transitions |
| مستخلص: |
In the temperature dependence of magnetization, the Heusler compound Ru1.9Fe0.1CrSi exhibits a peak at a temperature which is defined as TN*. Below that temperature strong irreversibility occurs, the onset temperature of which is defined as Tg. However, no evidence of long-range order has been found. In this study the magnetic properties of these anomalies were investigated usmg zero-field (ZF) and longitudinal-magnetic-field (LF) muon-spin-relaxation (μSR) measurements. In the temperature dependence of the relaxation rate of ZF-μSR, a peak at ∼16 K was observed, which agrees with Tg. LF-μSR measurements as a function of magnetic field reveal the existence of a static internal magnetic field at 0.3 K. Around TN* ∼ 30 K, we detected no anomalies that can be associated with a magnetic phase transition in the temperature dependence of the relaxation rate of μSR, but a large decrease in the initial asymmetry was observed. LF-μSR measurements suggest that the internal magnetic field appears even around TN*. These results suggest that around TN* independent spin-frozen regions form inhomogeneously. With decreasing temperature these regions gradually develop, and eventually, at Tg spin-glass freezing occurs with correlations over the whole sample. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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