Analysis of 27 Al - and 93 Nb - NMR spectra of PrNb 2 Al 20 single crystal
نویسندگان
چکیده
We report the results of 27Aland 93Nbnuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements in PrNb2Al20 single crystals. The field angle dependence of the observed 93Nb-NMR lines for the single crystal at around 5 T and at 50K is reproduced by a simulation using previously reported NQR parameters νQ,Nb ≈ 1.82MHz and ηNb ≈ 0, while 27Al-NMR lines were not reproduce by the previously reported NQR parameters νQ,Al(3) ≈ 1.53MHz and ηAl(3) ≈ 0.17. By reexamining and reconsidering the NMR and NQR lines for powder samples, we obtained a correct NQR parameters for Al(3) site to be νQ,Al(3),new ≈ 1MHz and ηAl(3),new ≈ 0.4.
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