Optimization of Ni–Cr flux growth for hexagonal boron nitride single crystals

Autor:	James H. Edgar, Yi Zhang, Timothy B. Hoffman, Kyle C. Snow, B. Clubine
Rok vydání:	2014
Předmět:	Diffraction Materials science Analytical chemistry Hexagonal boron nitride Nitride Condensed Matter Physics law.invention Inorganic Chemistry Crystal Crystallography symbols.namesake Cooling rate law Materials Chemistry symbols Flux growth Crystallization Raman spectroscopy
Zdroj:	Journal of Crystal Growth. 393:114-118
ISSN:	0022-0248
DOI:	10.1016/j.jcrysgro.2013.09.030
Popis:	Hexagonal boron nitride (hBN) single crystals were grown using a Ni–Cr flux growth method. The crystallization cooling rate, soak temperature and soak time were controlled to determine their effect on crystal size and quality. A cooling rate of 2 °C/h produced the best quality hBN crystals. The maximum crystal width increased with soak temperature from 1 mm at 1450 °C to 5 mm at 1700 °C. The crystal thickness decreased with soak temperature from 500 µm at 1500 °C to 40 µm at 1700 °C. A soak time of 24 to 48 h produced the maximum crystal thickness. X-ray diffraction and Raman spectroscopy confirmed that the crystals were highly ordered and of high purity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eff443916d2beec9ae184efc7ef04d6e https://doi.org/10.1016/j.jcrysgro.2013.09.030 Zobrazit plný text záznamu Full Text from ScienceDirect