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2000 (1)
1Author    H. Nishihara, N. Kijima, S. NagataRequires cookie*
 Title    NMR of 93 Nb perturbed by Quadrupole Interaction in Quasi-One-Dimensional BaNbS 3+d  
 Abstract    Field-swept NMR spectra of y3 Nb are examined for a sample of BaNbS 2 . 96 which has a semicon-ductive temperature dependence of the resistivity at low temperature, and a sample of BaNbS 3 0 3 which has a metallic temperature dependence at low temperature. Both spectra are so-called NMR powder patterns perturbed by a quadrupole interaction with a quadrupole frequency u Q = 3e 7 qQ/2I(2I — l)/i of 2.5 [MHz]. No appreciable difference in the spectra has been observed between the two samples, suggesting that the amplitude of the conduction electron density is too small to perturb the electronic environments around the niobium atoms. The general behavior of the nuclear spin-lattice relaxation of 93 Nb in both compounds is consistent with an interpretation that the relaxation at low temperature is dominated by a Korringa mechanism and at higher temperature by a quadrupole interaction. 
  Reference    Z. Naturforsch. 55a, 359—361 (2000); received August 23 1999 
  Published    2000 
  Keywords    NMR, 93 Nb, BaNbS 3, Quadrupole Interaction 
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 TEI-XML for    default:Reihe_A/55/ZNA-2000-55a-0359.pdf 
 Identifier    ZNA-2000-55a-0359 
 Volume    55