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dc.contributor.authorSchuele, Paul J.
dc.contributor.authorSchmidt, V. Hugo
dc.date.accessioned2015-07-10T21:16:02Z
dc.date.available2015-07-10T21:16:02Z
dc.date.issued1989-02
dc.identifier.citationSchuele, Paul J., and V. Hugo Schmidt. “Cs 133 Nuclear Magnetic Resonance Study of One-Dimensional Fluctuations in CsH 2 PO 4 and Its Ferroelectric and Antiferroelectric Transitions at High Pressure.� Phys. Rev. B 39, no. 4 (February 1989): 2549–2556. doi:10.1103/physrevb.39.2549.en_US
dc.identifier.issn1098-0121
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/9177
dc.description.abstractPressure and temperature effects on the one dimensional (1D) and higher-dimensionality correlations associated with the ferroelectric and antiferroelectric phase transitions in cesium dihydrogen phosphate were studied by means of the Cs133 nuclear magnetic resonance (NMR) spin-lattice relaxation time T1. We measured T1 at 6.5 MHz at temperatures down to the ferroelectric (FE) Curie point TC at 1 bar and at 1.5 and 3.0 kbar, down to the triple point Tt=124.6 K at 3.3 kbar, and down to the antiferroelectric (AFE) Néel point TN at 3.6 kbar. With decreasing temperature, T1 first decreases exponentially due to 1D fluctuations associated with the Jb interactions in disordered hydrogen-bonded chains running along b. As the temperature falls further, T1 then decreases linearly as the Jc interaction between these chains in hydrogen-bonded planes comes into play. From these results and the known pressure derivatives of TC and TN, we calculated pressure dependences for Jb, Jc, and for the interplanar interaction Ja. At 3.3 kbar Ja changes sign, so the plane stacking becomes AFE instead of FE. Above 8.9 kbar, where Jc extrapolates to zero, a new AFE phase with a checkerboard arrangement of FE b chains is predicted.en_US
dc.subjectResonanceen_US
dc.subjectPhysicsen_US
dc.titleCs 133 Nuclear Magnetic Resonance Study of One-Dimensional Fluctuations in CsH 2 PO 4 and Its Ferroelectric and Antiferroelectric Transitions at High Pressureen_US
dc.typeArticleen_US
mus.citation.extentfirstpage2549en_US
mus.citation.extentlastpage2556en_US
mus.citation.issue4en_US
mus.citation.journaltitlePhysics Review Ben_US
mus.citation.volume39en_US
mus.identifier.categoryPhysics & Mathematicsen_US
mus.identifier.doi10.1103/physrevb.39.2549en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentPhysics.en_US
mus.relation.universityMontana State University - Bozemanen_US


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