Czochralski growth of lead iodide single crystals: Investigations and comparison with the Bridgman method

Autor:	M. Matuchova, J. Maixner, J. Tonn, A. Cröll, Andreas N. Danilewsky
Rok vydání:	2011
Předmět:	chemistry.chemical_classification Diffraction Chemistry Iodide Analytical chemistry Halide Crystal structure Condensed Matter Physics Inorganic Chemistry Crystal Crystallography Electron diffraction Materials Chemistry Perpendicular Electron backscatter diffraction
Zdroj:	Journal of Crystal Growth. 318:558-562
ISSN:	0022-0248
Popis:	We have developed a procedure to grow lead iodide (PbI 2 , 2H type) crystals using the Czochralski method applying an Ar counter pressure inside a fused silica chamber. The resulting crystal has a length of 3 cm and is free of cracks. Electron backscatter diffraction (EBSD) measurements demonstrate that the crystal grew along [1 1 2¯ 0] direction ( c -axis perpendicular to growth direction), which was defined by the PbI 2 seed. This means that a better control of the growth direction is possible using the Czochralski method. The EBSD patterns suggest a simplified preparation method of the very soft crystals using samples with a surface orientation perpendicular to (0 0 0 1). Rocking curves measured by high resolution X-ray diffraction (HRXRD) indicate that the structural quality of the approximately 80% single crystalline material is comparable to Bridgman–Stockbarger-grown crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3afbb9a24f70918624be89e5b03c7f1f https://doi.org/10.1016/j.jcrysgro.2010.10.059 Zobrazit plný text záznamu Full Text from ScienceDirect