Anomalous temperature dependence of the first diffraction peak in the superionic glass (AgI)x(AgPO3)1-x

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.61.1036
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TypeArticle
Journal titlePhysical review. B, Condensed matter and materials physics
Volume61
Issue2
Pages10361042; # of pages: 7
AbstractWe report neutron-scattering measurements on the first sharp diffraction peak in the superionic conducting glass (AgI)x(AgPO3)1-x as a function of composition x from 0.0 to 0.7. The temperature variation is studied in detail between 300 K and 500 K, a range that spans the calorimetric glass transition. This peak reflects structure in the phosphate network with periodicity d?10 � and correlation length ?25 �. The intensity of the first sharp diffraction peak shows an anomaly as a function of temperature at a temperature about 6�11 % higher than Tg as measured calorimetrically. This is tentatively ascribed to the diffraction intensity reflecting the onset of ? relaxation, while the calorimetric data reflects the onset of ? relaxation.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedNo
NPARC number12328823
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Record identifier44ec7334-c2d6-4e48-b5f3-2cbfa6a0bd6b
Record created2009-09-10
Record modified2016-05-09
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