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dc.contributor.authorSwain, Diptikanta-
dc.contributor.authorBhadram, Venkata Srinu-
dc.contributor.authorPradhan, Gopal K-
dc.contributor.authorBhat, S Venkataprasad-
dc.contributor.authorNarayana, Chandrabhas-
dc.contributor.authorRao, C N R-
dc.date.accessioned2012-02-03T06:30:33Z-
dc.date.available2012-02-03T06:30:33Z-
dc.date.issued2010-09-23-
dc.identifier1089-5639en_US
dc.identifier.citationJournal of Physical Chemistry A 114(37), 10040-10044 (2010)en_US
dc.identifier.urihttp://hdl.handle.net/10572/284-
dc.descriptionRestricted Accessen_US
dc.description.abstractTemperature-dependent Raman spectroscopic studies have been carried out on KHSO4 single crystals in the temperature range 298-493 K. A structural phase transition driven by the lattice and molecular disorder is observed at 473 K. The spectral data enable an understanding of the nature of the lattice disorder across the phase transition leading to the superionic phase. The disorder in the HSO4- polymeric hydrogen-bonded chain leading to a higher symmetry in the high temperature phase is clearly captured from our Raman results. The internal S-OH and S-O stretching modes and, to a limited extent, the external modes throw light on the disorder mechanism and the enhancement of conductivity after transition.en_US
dc.description.urihttp://dx.doi.org/10.1021/jp103005gen_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.rights© 2010 American Chemical Societyen_US
dc.subjectFast-Ion Conductionen_US
dc.subjectProton Conductivityen_US
dc.subjectCrystalsen_US
dc.subjectRelaxationen_US
dc.subjectBisulfateen_US
dc.subjectSulfateen_US
dc.subjectCshseo4en_US
dc.subjectCshso4en_US
dc.subjectStateen_US
dc.titleSuperionic Phase Transition in KHSO4: A Temperature-Dependent Raman Investigationen_US
dc.typeArticleen_US
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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