作者:M. Kemali、R.L. Havill、J.M. Titman、D.K. Ross
DOI:10.1016/0925-8388(95)01825-5
日期:1995.12
place in which the correlation time of the local field decreases rapidly. Comparison with the hopping rate of the hydrogen atoms, as measured by means of nuclear magnetic relaxation, shows that the change in the correlation time is consistent with an increasingly rapid motion of the hydrogen atoms. If the sample is then cooled, hysteresis occurs, in which the motional narrowing is retained to lower temperatures
摘要 使用零磁场技术在含有间隙氢的 HfV 2 Laves 化合物中测量了介子自旋弛豫。在低温下,弛豫曲线具有与局部场波动相关的特征形式。相关时间几乎与温度无关。随着温度升高到约 100 K 以上,发生运动变窄,其中局部场的相关时间迅速减少。与通过核磁弛豫测量的氢原子跳跃率的比较表明,相关时间的变化与氢原子越来越快的运动是一致的。如果随后冷却样品,则会发生滞后现象,其中运动变窄会保留到较低的温度。