Rhombohedral-cubic phase transition characterization of (Pb,Ge)Te using high-temperature XRD

Autor:	J. Sariel, I. Dahan, Yaniv Gelbstein
Rok vydání:	2008
Předmět:	Phase transition Crystallography Continuous transformation Radiation Materials science Phase (matter) Powder metallurgy Doping General Materials Science Trigonal crystal system Condensed Matter Physics Instrumentation Characterization (materials science)
Zdroj:	Powder Diffraction. 23:137-140
ISSN:	1945-7413 0885-7156
DOI:	10.1154/1.2912439
Popis:	Rhombohedral-cubic transformation in Bi2Te3 doped-Pb1−xGexTe alloys is presented. Samples of Bi2Te3 doped Pb1−xGexTe were prepared by powder metallurgy approach. These powder samples were examined by high-temperature X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy. A bulk (pressed powder) cylindrical specimen was used for dilatometery characterizations. According to the XRD examinations it seems that upon increasing the temperatures a continuous transformation occurs from the rhombohedral to the cubic phase, accompanied by the formation of a small amount of the phase Ge0.74Pb3.26Te4.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1b640e36ed42c13d36926d08c4e3f1b2 https://doi.org/10.1154/1.2912439 Zobrazit plný text záznamu