mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal Universitymrisel-186Research ArticleСтатьиCopper NQR studies of Ag-doped ternary sulfide Cu12As4S13 (tennantite)OrlovaA. Yu.

Kazan 420008

GainovR. R.

Kazan 420008

Ramil.Gainov@ksu.ruDooglavA. V.

Kazan 420008

Pen'kovI. N.

Kazan 420008

MozgovaN. N.

Moscow 119017

Department of Physics, Kazan State UniversityRussian FederationDepartment of Geology, Kazan State UniversityRussian FederationInstitute of Geology and Mineralogy, Russian Academy of ScienceRussian Federation200820012024101610Copyright © Orlova A.Y., Gainov R.R., Dooglav A.V., Pen'kov I.N., Mozgova N.N., 20242024Orlova A.Y., Gainov R.R., Dooglav A.V., Pen'kov I.N., Mozgova N.N.Orlova A.Y., Gainov R.R., Dooglav A.V., Pen'kov I.N., Mozgova N.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/186

The investigations of Ag-contaning tennantite, belonging to the group of tetrahedrite-based sulfides, were performed by means of copper nuclear quadrupole resonance (NQR) in a temperature range from 4.2 K up to 60 K. These experiments showed that copper nuclear spin-lattice relaxation rate T1-1 and nuclear spin-echo decay rate T2-1 depend on temperature in the same way as earlier studied samples with other impurity compositions. The obtained data are interpreted from the viewpoint of internal motions in the structure of tennantite. The analysis of copper NQR data at low temperatures points to magnetic phase transition near 60 K from paramagnetic phase to the phase, which resembles spin-glass-like constitution.

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The authors declare that there are no conflicts of interest present.