Show simple item record

dc.contributor.authorTu, Chi-Shun
dc.contributor.authorSchmidt, V. Hugo
dc.date.accessioned2017-02-21T15:35:53Z
dc.date.available2017-02-21T15:35:53Z
dc.date.issued1995
dc.identifier.citationC.-S. Tu and V.H. Schmidt, “Brillouin scattering in single crystals of Rb1-x(ND4)xD2AsO4,” Proc. Internat. Symp. on Applic. of Ferroelectrics, IEEE Publ. CH3416-5 0-7803-1847-1/95, pp. 237240 (1995).en_US
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/12629
dc.description.abstractThe LA[100] (a-axis) Brillouin backscattering phonon spectra have been measured as a function of temperature (20-370 K) in the mixed deuterated ferroelectric (FE)-antiferroelectric (AFE) system Rb/sub 1-x/(ND/sub 4/)/sub x/D/sub 2/AsO/sub 4/ (DRADA-x) for ammonium concentrations x=0. 0.10 and 0.28. The Brillouin frequency shift with decreasing temperature shows hardening (positive coupling) whose steepness decreases with higher ND/sub 4/ content. For RbD/sub 2/AsO/sub 4/ (DRDA), a Landau-Khalatnikov-like maximum (which persists in weaker form for x=0.10) was observed and the polarization relaxation time is estimated to be /spl tau/-3.8/spl times/10/sup -12//(T/sub c/-T) sec, where T/sub c/ is the ferroelectric transition temperature. For both x=0.10 and 0.28, a broad damping peak anomaly which is stronger in x=0.28 was observed and can be connected with the dynamic order parameter fluctuations. Taking into account earlier NMR and dielectric results, we conclude that the local structure competition between FE ordering and AFE ordering is the origin of these broad damping anomalies.en_US
dc.language.isoen_USen_US
dc.titleBrillouin scattering in single crystals of Rb1-x(ND4)xD2AsO4en_US
dc.typeArticleen_US
mus.citation.conferenceIEEE International Symposium on Applications of Ferroelectricsen_US
mus.citation.extentfirstpage237en_US
mus.citation.extentlastpage240en_US
mus.citation.journaltitleProceedings of the Ninth IEEE International Symposium on Applications of Ferroelectricsen_US
mus.identifier.categoryPhysics & Mathematicsen_US
mus.identifier.doihttp://dx.doi.org/10.1109/ISAF.1994.522347en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentPhysics.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage2en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record