TY - JOUR
T1 - Structure and properties of Ge2.5PSx glasses
AU - Cherry, Brian R.
AU - Zwanziger, Josef W.
AU - Aitken, Bruce G.
N1 - Funding Information:
We thank Alex Hannon (ISIS) for his assistance with the neutron experiments and Randy Youngman (Corning) for many helpful discussions. We acknowledge Mark Powley and David Crooker for their technical assistance in the synthesis of the glass samples used in this study. We thank Corning Incorporated and the NSF for financial support (DMR-9870246).
PY - 2004/1/1
Y1 - 2004/1/1
N2 - Ge2.5PSx glasses were studied with a combination of Raman spectroscopy, nuclear magnetic resonance, and neutron diffraction. From these experiments the distribution of bonding configurations was determined, and used to explain the compositional dependence of the index of refraction and the glass transition temperature. On reducing the sulfur content of these glasses below the stoichiometric amount, the sulfur deficit is accommodated by the progressive loss of the non-bridging sulfur of S=PS3/2 groups, followed by the conversion of the resultant PS3/2 groups into species such as P4S3 characterized by P-P bonding. The presence of metal-metal bonds involving germanium, found in samples with the lowest sulfur content, was found to be the most important structural feature in determining the optical response.
AB - Ge2.5PSx glasses were studied with a combination of Raman spectroscopy, nuclear magnetic resonance, and neutron diffraction. From these experiments the distribution of bonding configurations was determined, and used to explain the compositional dependence of the index of refraction and the glass transition temperature. On reducing the sulfur content of these glasses below the stoichiometric amount, the sulfur deficit is accommodated by the progressive loss of the non-bridging sulfur of S=PS3/2 groups, followed by the conversion of the resultant PS3/2 groups into species such as P4S3 characterized by P-P bonding. The presence of metal-metal bonds involving germanium, found in samples with the lowest sulfur content, was found to be the most important structural feature in determining the optical response.
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U2 - 10.1016/j.jnoncrysol.2003.09.057
DO - 10.1016/j.jnoncrysol.2003.09.057
M3 - Article
AN - SCOPUS:0344513302
SN - 0022-3093
VL - 333
SP - 28
EP - 36
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
IS - 1
ER -