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Thermodynamic and Raman spectrometry studies showing the role of the silica tube in the chemical vapor transport of titanium diboride
Author(s) -
Monteil Y.,
Feurer R.,
Constant G.
Publication year - 1987
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19875450225
Subject(s) - raman spectroscopy , titanium diboride , titanium , materials science , tube (container) , chemical vapor deposition , chemical engineering , magnesium diboride , nanotechnology , metallurgy , composite material , optics , critical current , ceramic , physics , engineering , quantum mechanics , magnetic field
Chemical vapor transports of titanium diboride using different halides as transport agents (t.a.) produce crystals with various size, morphology and stoechiometry. The explanation of this fact is to be research in the interaction of the system TiB 2 /t.a. with the silica of the tube in which the transport occurs. Thermodynamic calculations and Raman spectroscopy “in situ” both show the presence of silicon compounds in the gas phase. Their relative quantities following the nature of the t.a. allow us to explain the differences observed in the growth.