Nuclear Spin Relaxation of Extremely Dilute Impurities using Brute-Force NMRON

概要

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Brute-force nuclear magnetic resonance on oriented nuclei (BF-NMRON) was used to investigate the nuclear spin-relaxation times, T_1, of ^<90>Nb in Nb and Cu, ^<96>Tc in Nb, ^<101m>Rh in Cu, and ^110mAg in Ag with an external field of 11.922T at about 10mK. The observed relaxation times with known nuclear g-factors were used to estimate the converted relaxation rates, (T_1Tg^2_n)^<-1>, which were compared with those obtained from NMR and other methods. From the comparison, it was found that (T_1Tg^2_n)^<-1> of ^<90>Nb in Nb and ^<110m>Ag in Ag coincided with those of the bulk systems. (T_1Tg^2_n)^<-1> of ^<90>Nb in Cu was about four times larger than that of Nb bulk system. Both ^<96>Tc in Nb and ^<110m>Rh in Cu produced (T_1Tg^2_n)^<-1> values consistent with previous studies.
社団法人日本物理学会の論文
2002-06-15