Article

JETP Letters

, Volume 96, Issue 6, pp 370-374

Structure and transport properties of stephanite (Ag5SbS4) according to antimony nuclear quadrupole resonance

  • A. Yu. OrlovaAffiliated withInstitute of Physics, Kazan Federal University Email author 
  • , R. R. GainovAffiliated withInstitute of Physics, Kazan Federal University
  • , A. V. DooglavAffiliated withInstitute of Physics, Kazan Federal University
  • , I. N. Pen’kovAffiliated withInstitute of Geology and Petroleum Technologies, Kazan Federal University
  • , E. A. KorolevAffiliated withInstitute of Geology and Petroleum Technologies, Kazan Federal University

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Abstract

Silver sulfo-antimonide Ag5SbS4 (stephanite) has been studied by nuclear quadrupole resonance (NQR) spectroscopy on antimony nuclei. The temperature dependences of the spectroscopic and relaxation parameters have been examined in the range of 4.2–395 K. A phase transition at 140 K and internal motions with an activation energy of 0.29 eV have been experimentally detected. The nature of the phase transition and diffusion of silver ions has been discussed in view of the reported data.