Title of article
Evidence for low-temperature internal dynamics in Cu12As4S13 according to copper NQR and nuclear relaxation
Author/Authors
R. R. Gainov، نويسنده , , R.R. and Dooglav، نويسنده , , A.V. and Pen’kov، نويسنده , , I.N.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
5
From page
544
To page
548
Abstract
63,65Cu nuclear quadrupole resonance (NQR) was applied to study the natural mineral Cu12As4S13 (tennantite) in the temperature range 4.2–210 K. The obtained results point to the presence of field fluctuations caused by internal motions in tennantite. Consistently with the crystal structure, the experimental data can be described by an occurrence of a magnetic phase transition, which takes place near 65 K. The low-temperature phase is characterized by Cu(II) electron magnetic moments freezing in the form of a spin-glass-like constitution.
Keywords
D. Valence fluctuations , E. Nuclear resonances
Journal title
Solid State Communications
Serial Year
2006
Journal title
Solid State Communications
Record number
1763642
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