Journal article

Publication year: 2011

Pages: 2412-2421

Journal: Crystal Growth and Design

Volume number: 11

Issue number: 6

ISSN: 1528-7483

eISSN: 1528-7505

DOI Link: https://doi.org/10.1021/cg200167j

Publisher: American Chemical Society

Abstract: 
The structures and properties of silver selenide samples strongly depend on the method of preparation. Thin films prepared by pulsed laser deposition (PLD) contain lamellae of two low-temperature modifications of Ag2Se whose structures were analyzed in detail by electron microscopy techniques. Besides the stable and known Naumannite-type phase (LT1), a metastable phase was observed (LT2), and the phase transformation was examined in situ. Via cooling and annealing, LT2 becomes dominant in thin films, thus enabling solving the structure of LT2 by electron diffraction. These experiments and HRTEM point to an Acanthite-type (stable low-temperature modification of Ag2S) structure of LT2. Rapid-quenching procedures were applied for the first synthesis of LT2 as bulk sample. Depending on the conditions of melt spinning experiments, well-defined products were formed. In one series, we found a separation of LT1 and LT2 into distinct morphologies, i.e. microspheres and dendrites, respectively. The results on the magnetoresistance of the rapidly quenched materials support previous work.

Harvard Citation style: Kienle, L., Duppel, V., Mogwitz, B., Janek, J., von Kreutzbruck, M., Leineweber, A., et al. (2011) Synthesis-Real Structure-Property: The Showcase of Silver-Rich Ag2Se, Crystal Growth and Design, 11(6), pp. 2412-2421. https://doi.org/10.1021/cg200167j

APA Citation style: Kienle, L., Duppel, V., Mogwitz, B., Janek, J., von Kreutzbruck, M., Leineweber, A., & Simon, A. (2011). Synthesis-Real Structure-Property: The Showcase of Silver-Rich Ag2Se. Crystal Growth and Design. 11(6), 2412-2421. https://doi.org/10.1021/cg200167j