Nuclear resonant scattering of synchrotron radiation from 161Dy at 25.61 keV
Nuclear resonant scattering of synchrotron radiation from 161Dy at 25.61 keV
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25.61 keV 161Dy 同步加速器辐射的核共振散射
DOI：
10.1209/epl/i2001-00521-4
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
E. Gerdau
中科院分区：
文献类型：
--
作者：
Y. Shvyd’ko;M. Gerken;H. Franz;M. Lucht;E. Gerdau
采用核正向散射（NFS）和核非相干散射（NIS）两种技术研究了25.6 keV能级161Dy同步辐射的核共振散射。在15k到80k的温度范围内测量了Dy金属的NFS时间谱。它们揭示了铁磁镝中的电子自旋弛豫，弛豫时间为10 - 30ns。用meV分辨率测量了室温下Dy2O3的NIS能谱。观察到伴随声子激发的散射。
Nuclear resonant scattering of synchrotron radiation from the 25.6 keV level of 161Dy is studied with two techniques: nuclear forward scattering (NFS) and nuclear incoherent scattering (NIS). NFS time spectra of Dy metal are measured at temperatures ranging from 15 K to 80 K. They reveal electron spin relaxation in ferromagnetic dysprosium with long relaxation times of 10–30 ns. NIS energy spectra of Dy2O3 at room temperature are measured with meV resolution. Scattering accompanied by phonon excitation is observed.