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Ferrielectricity in a metal-organic ferroelectric tris-sarcosine calcium chloride

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Scott_2016_Ferrielectricity_PhysRevB_AAM.pdf (1.211Mb)
Date
28/03/2017
Author
Scott, James F.
Morrison, F. D.
Slawin, Alexandra M. Z.
Clulow, Rebecca
Gherson, Aurora
Bumstead, Alice
Gardner, Jonathan
Capelli, Silvia
Probert, Michael
Sahoo, Satyaprakash
Young, J
Katiyar, R.
Salje, E.
Keywords
QD Chemistry
QC Physics
T Technology
NDAS
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Abstract
We report a paradigm of ferrielectricity in a single-phase crystal, tris-sarcosine calcium chloride [TSCC; (CH3NHCH2COOH)3CaCl2]. Ferrielectricity is well known in smectic liquid crystals but almost unknown in true crystalline solids. C. F. Pulvari [Ferrielectricity, Phys. Rev. 120 , 1670 (1960)] reported it in 1960 in mixtures of ferroelectrics and antiferroelectrics (AFEs), but only at high fields. Tris-sarcosine calcium chloride exhibits a second-order displacive phase transition near Tc=130K that can be lowered to a quantum critical point at 0 K via Br or I substitution and phases previously predicted to be AFE at high pressure and low temperatures. Unusually, the size of the primitive unit cell does not increase in the so-called AFE phase. We measure hysteresis loops and polarization below T=64K and provide clear Raman evidence for this paraelectric-ferrielectric transition.
Citation
Scott , J F , Morrison , F D , Slawin , A M Z , Clulow , R , Gherson , A , Bumstead , A , Gardner , J , Capelli , S , Probert , M , Sahoo , S , Young , J , Katiyar , R & Salje , E 2017 , ' Ferrielectricity in a metal-organic ferroelectric tris-sarcosine calcium chloride ' , Physical Review. B, Condensed matter and materials physics , vol. 95 , no. 9 , 094119 . https://doi.org/10.1103/PhysRevB.95.094119
Publication
Physical Review. B, Condensed matter and materials physics
Status
Peer reviewed
DOI
https://doi.org/10.1103/PhysRevB.95.094119
ISSN
1098-0121
Type
Journal article
Rights
© 2017, American Physical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at journals.aps.org/prb / https://doi.org/10.1103/PhysRevB.95.094119
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/10173

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