Spin lattice relaxation in TmNi 5 above its curie temperature
作者:P.C.M. Gubbens、A.M. van der Kraan、K.H.J. Buschow
DOI:10.1016/0304-8853(85)90182-9
日期:1985.6
Abstract The hexagonal compound TmNi5 was investigated by means of 169TmMossbauer spectroscopy in the temperature range 4–350 K. Above Tc=4.5 K the magnetic hyperfine interactions were found to be governed by paramagnetic relaxation. This behaviour was interpreted in terms of a stochastic spin-down model. The spin lattice relaxation time was found to follow an exponential temperature dependence.
摘要 通过 169Tm 穆斯堡尔光谱在 4-350 K 的温度范围内研究了六方化合物 TmNi5。在 Tc=4.5 K 以上,发现磁性超精细相互作用受顺磁弛豫控制。这种行为被解释为随机降速模型。发现自旋晶格弛豫时间遵循指数温度依赖性。