NUCLEAR-SPIN-LATTICE RELAXATION IN RUTHENIUM

被引：3

作者：

MARKENDORF, R ^{[1
]}

SCHOBER, C ^{[1
]}

机构：

[1] TECH UNIV DRESDEN,INST THEORET PHYS,D-01062 DRESDEN,GERMANY

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1995年 / 7卷 / 23期

关键词：

D O I：

10.1088/0953-8984/7/23/024

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The spin-lattice relaxation rate T-1(-1) of hexagonal close packed ruthenium has been calculated on the basis of full-relativistic linear muffin tin orbital band structure calculations. For the stable isotopes Ru-99 and Ru-101 the results are in accord with experiment. The ratio between the theoretical relaxation rates of Ru-101 and Ru-99 is 1.36. This ratio exhibits, in comparison with the corresponding gamma(N)(2) ratio of 1.26, an additional quadrupole relaxation at Ru-101, which is in line with the large quadrupole moment of Ru-101. Surprisingly, however, the experimental ratio of 1.19 is lower than 1.26. A large discrepancy opens between theory and experiment for the Ru-103 relaxation which has been measured by nuclear orientation. Consideration of the dominant quadrupole relaxation rate in the evaluation of the experimental data improves the agreement.

引用

页码：4561 / 4564

页数：4