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FIZIKA A 8 (1999) 1 , 17-24
 
VIBRATIONAL SPECTRA AND STRUCTURAL STUDIES OF Hg-As-S GLASSES
NATALJA MATELESHKO, VLADYMYR MITSA and ALEXANDR KIKINESHI
Uzhgorod State University, Department of Solid State Electronics, 32
Voloshin Street, Uzhgorod 294000, Ukraine
Received 27 May 1998; revised manuscript received 17 February 1999
Accepted 15 May 1999
Structural interpretation of Raman and IR spectra, and X-ray diffraction study give
evidence to the fact that the adding of mercury into binary glass-forming system causes
the formation of a-HgS and b-As4S4
at CHg > 2 at.%. Slow quenching of the melt of
HgAsS2 compound results in the separation of a-HgS
and b-As4S4. In the chain-like model of
a-As2S3 structure, the addition of Hg atoms results in the increase
of chain dimensions from 1.42 to 1.8 nm.
PACS numbers: 87.15.Rn, 87.50.-a
UDC 535.217, 539.21
Keywords: Hg-As-S glasses, Raman and IR spectra, X-ray diffraction, separation of a-HgS and b-As4S4,
chain-like model of a-As2S3 structure
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