A novel data on Ag 5 SbS 4 and CuPbSbS 3 probed by antimony NQR spectroscopy

摘要

Multicomponent silver and copper chalcogenides have received much attention during recent years due to their important technological applications. These compounds have intriguing optical, electric and ferroelectric properties, as well as ionic conductivity, etc. [1, 2]. To explain physical properties of chalcogenides an exact knowledge of the crystal structure of solids state materials is necessary. In many cases NQR spectroscopy provides detailed information about static and dynamic properties of solids. NQR spectroscopy employs nuclei having a quadrupole moment, such as Cu, Na, Co, As, Sb, Bi, and others [3,4]. NQR experimental results and their analysis highlight the details of ionic arrangement, phase-structural transformations, exchange interactions, internal movements, etc. [5].