Grüne M, Müller-Warmuth W
Institut für Physikalische Chemie der Westfälischen Wilhelms-Universität, Münster, Germany.
Solid State Nucl Magn Reson. 1995 Oct;5(1):145-50. doi: 10.1016/0926-2040(95)00025-l.
Paramagnetic impurities have been shown to affect the 7Li nuclear magnetic resonance relaxation rates in cation-conducting glasses, and wrong data may then be extracted from the experiments. Frequency- and temperature-dependent T(-1)1 studies of lithium borate and thioborate glasses revealed that iron impurities cause frequency-independent relaxation and "shoulders" of the low-temperature slopes in high fields, whereas manganese produces enhanced relaxation peaks. The results of the T(-1)1 (and some T(-1)1p and T(-1)2) measurements are discussed.
顺磁性杂质已被证明会影响阳离子导电玻璃中锂-7核磁共振弛豫率，进而可能从实验中提取出错误数据。对硼酸锂和硫代硼酸锂玻璃进行的与频率和温度相关的T1-1研究表明，铁杂质会导致与频率无关的弛豫以及高场下低温斜率的“肩部”，而锰会产生增强的弛豫峰。本文讨论了T1-1（以及一些T1p-1和T2-1）测量结果。
