Investigating short-range order in triglycine sulphate using x-ray and neutron diffuse scattering

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dc.contributor.authorHudspeth, JMen_AU
dc.contributor.authorGoossens, DJen_AU
dc.contributor.authorGutmann, MJen_AU
dc.contributor.authorStuder, AJen_AU
dc.contributor.authorWelberry, TRen_AU
dc.date.accessioned2021-10-21T22:47:28Zen_AU
dc.date.available2021-10-21T22:47:28Zen_AU
dc.date.issued2012-02-02en_AU
dc.date.statistics2021-09-07en_AU
dc.description.abstractTriglycine sulphate (TGS) [(NH2CH2COOH)3H2SO4] is a hydrogen-bonded ferroelectric with a phase transition temperature of 322K [1]. The phase transition is reversible and second order, order disorder type, making TGS of fundamental interest in the field of phase transitions [2]. Above the critical temperature, one of the glycine molecules is disordered across a mirror plane. Below the critical temperature, it chooses a side, breaking the symmetry. The ferroelectric state is obtained through the ordering of the glycine orientations on neighbouring sites, but the mechanism for the phase transition is not well understood. We have investigated the short-range order in TGS by collecting single crystal x-ray and neutron diffuse scattering data on hydrogenous and fully deuterated TGS respectively. Data was collected at temperatures from well below to well above TC. We have also developed a model for the short-range order using the program ZMC [3]. This has given us some new insight into the behavior of the disordered glycine in TGS. For example, above TC, the orientations of the disordered glycine appear to be correlated over short range rather than being completely random as suggested by the average structure.en_AU
dc.identifier.citationHudspeth, J. M., Goossens, D. J., Gutmann, M. J., Studer, A. J., & Welberry, T. R. (2012). Investigating short-range order in triglycine sulphate using x-ray and neutron diffuse scattering. Paper presented to the 36th Annual Condensed Matter and Materials Meeting, Wagga 2012, Charles Sturt University, Wagga Wagga, NSW, 31st January – 3rd February, 2012. Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2012/en_AU
dc.identifier.conferenceenddate3 February 2012en_AU
dc.identifier.conferencename36th Annual Condensed Matter and Materials Meetingen_AU
dc.identifier.conferenceplaceWagga Wagga, NSWen_AU
dc.identifier.conferencestartdate1 January 2012en_AU
dc.identifier.isbn978-0-646-57071-6en_AU
dc.identifier.otherWO2en_AU
dc.identifier.urihttps://physics.org.au/wp-content/uploads/cmm/2012/en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12052en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectHydrogenen_AU
dc.subjectFerroelectric materialsen_AU
dc.subjectPhase transformationsen_AU
dc.subjectOrder-disorder transformationsen_AU
dc.subjectCrystal-phase transformationsen_AU
dc.subjectDeuterationen_AU
dc.titleInvestigating short-range order in triglycine sulphate using x-ray and neutron diffuse scatteringen_AU
dc.typeConference Abstracten_AU
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