Structure and luminescence of gadolinium-doped cubic boron nitride powder

Autor:	S. V. Leonchik, A. V. Karotki
Rok vydání:	2012
Předmět:	Photoluminescence Materials science Gadolinium Doping Analytical chemistry chemistry.chemical_element Nitride Condensed Matter Physics Microanalysis chemistry.chemical_compound Crystallography Lattice constant chemistry Boron nitride Luminescence Spectroscopy
Zdroj:	Journal of Applied Spectroscopy. 79:595-599
ISSN:	1573-8647 0021-9037
DOI:	10.1007/s10812-012-9645-8
Popis:	The structural characteristics and chemical, morphological, and optical properties of cBN and cBN:Gd micropowders are studied by x-ray diffraction, energy-dispersive electron probe microanalysis (x-ray spectral microanalysis), and photoluminescence techniques. Cubic boron nitride (cBN) micropowders were synthesized at high pressures and temperatures from hexagonal boron nitride (hBN) micropowder and Li3N catalyst. cBN:Gd micropowders were synthesized from mixtures of hBN, Li3N, and GdF3 micropowders. A lattice parameter of a~3.615 A is calculated for both types of powder (cBN and cBN:Gd). The photoluminescence spectra of the cBN:Gd powder are found to contain emission lines attributable to intracenter optical transitions of Gd3+ ions.
Databáze:	OpenAIRE
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