, Volume 96, Issue 6, pp 370-374
Date: 10 Jan 2013

Structure and transport properties of stephanite (Ag5 SbS4 ) according to antimony nuclear quadrupole resonance

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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.