Low-frequency Raman study of the ferroelectric phase transition in a layered CuCl 4 -based organic-inorganic hybrid

Antonio Caretta; Rany Miranti; Remco W.A. Havenith; Elia Rampi; Michiel C. Donker; Graeme R. Blake; Matteo Montagnese; Alexey O. Polyakov; Ria Broer; Thomas T.M. Palstra; Paul H.M. Van Loosdrecht

doi:10.1103/PhysRevB.89.024301

Low-frequency Raman study of the ferroelectric phase transition in a layered CuCl 4 -based organic-inorganic hybrid

Antonio Caretta^*, Rany Miranti, Remco W.A. Havenith, Elia Rampi, Michiel C. Donker, Graeme R. Blake, Matteo Montagnese, Alexey O. Polyakov, Ria Broer, Thomas T.M. Palstra, Paul H.M. Van Loosdrecht

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

24 Citations (Scopus)

Abstract

The ferroelectric phase transition at TC=340K in (C6H5CH2CH2NH3)2CuCl4 is studied by means of temperature-dependent low-frequency Raman scattering, focusing on the coupling of a low-energy librational mode to the order parameter of the transition. Analysis of the symmetry and characteristics of this mode links the dipolar order to the tilt angle of the organic cations. The thermal evolution of the Raman spectrum demonstrates the displacive component of the phase transition in combination with order-disorder phenomena and the importance of the organic-inorganic interplay to the physical properties of the compound. The ferroelectric properties investigated here can be generalized to the family of layered organic-inorganic hybrids.

Original language	English
Article number	024301
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	89
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.89.024301
Publication status	Published - 6 Jan 2014
Externally published	Yes

Keywords

x-ray diffraction
Lattice dynamics
Order-disorder
Ab-initio
Soft-mode
Optical investigations
Magnetic measurements
Neutron scattering
(CH3NH3)2 CDCL4
Crystal
n/a OA procedure

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10.1103/PhysRevB.89.024301

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Caretta, A., Miranti, R., Havenith, R. W. A., Rampi, E., Donker, M. C., Blake, G. R., Montagnese, M., Polyakov, A. O., Broer, R., Palstra, T. T. M., & Van Loosdrecht, P. H. M. (2014). Low-frequency Raman study of the ferroelectric phase transition in a layered CuCl 4 -based organic-inorganic hybrid. Physical Review B - Condensed Matter and Materials Physics, 89(2), Article 024301. https://doi.org/10.1103/PhysRevB.89.024301

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title = "Low-frequency Raman study of the ferroelectric phase transition in a layered CuCl 4 -based organic-inorganic hybrid",

abstract = "The ferroelectric phase transition at TC=340K in (C6H5CH2CH2NH3)2CuCl4 is studied by means of temperature-dependent low-frequency Raman scattering, focusing on the coupling of a low-energy librational mode to the order parameter of the transition. Analysis of the symmetry and characteristics of this mode links the dipolar order to the tilt angle of the organic cations. The thermal evolution of the Raman spectrum demonstrates the displacive component of the phase transition in combination with order-disorder phenomena and the importance of the organic-inorganic interplay to the physical properties of the compound. The ferroelectric properties investigated here can be generalized to the family of layered organic-inorganic hybrids.",

keywords = "x-ray diffraction, Lattice dynamics, Order-disorder, Ab-initio, Soft-mode, Optical investigations, Magnetic measurements, Neutron scattering, (CH3NH3)2 CDCL4, Crystal, n/a OA procedure",

author = "Antonio Caretta and Rany Miranti and Havenith, {Remco W.A.} and Elia Rampi and Donker, {Michiel C.} and Blake, {Graeme R.} and Matteo Montagnese and Polyakov, {Alexey O.} and Ria Broer and Palstra, {Thomas T.M.} and {Van Loosdrecht}, {Paul H.M.}",

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doi = "10.1103/PhysRevB.89.024301",

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journal = "Physical Review B - Condensed Matter and Materials Physics",

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Caretta, A, Miranti, R, Havenith, RWA, Rampi, E, Donker, MC, Blake, GR, Montagnese, M, Polyakov, AO, Broer, R, Palstra, TTM & Van Loosdrecht, PHM 2014, 'Low-frequency Raman study of the ferroelectric phase transition in a layered CuCl 4 -based organic-inorganic hybrid', Physical Review B - Condensed Matter and Materials Physics, vol. 89, no. 2, 024301. https://doi.org/10.1103/PhysRevB.89.024301

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AU - Caretta, Antonio

AU - Miranti, Rany

AU - Havenith, Remco W.A.

AU - Rampi, Elia

AU - Donker, Michiel C.

AU - Blake, Graeme R.

AU - Montagnese, Matteo

AU - Polyakov, Alexey O.

AU - Broer, Ria

AU - Palstra, Thomas T.M.

AU - Van Loosdrecht, Paul H.M.

PY - 2014/1/6

Y1 - 2014/1/6

N2 - The ferroelectric phase transition at TC=340K in (C6H5CH2CH2NH3)2CuCl4 is studied by means of temperature-dependent low-frequency Raman scattering, focusing on the coupling of a low-energy librational mode to the order parameter of the transition. Analysis of the symmetry and characteristics of this mode links the dipolar order to the tilt angle of the organic cations. The thermal evolution of the Raman spectrum demonstrates the displacive component of the phase transition in combination with order-disorder phenomena and the importance of the organic-inorganic interplay to the physical properties of the compound. The ferroelectric properties investigated here can be generalized to the family of layered organic-inorganic hybrids.

AB - The ferroelectric phase transition at TC=340K in (C6H5CH2CH2NH3)2CuCl4 is studied by means of temperature-dependent low-frequency Raman scattering, focusing on the coupling of a low-energy librational mode to the order parameter of the transition. Analysis of the symmetry and characteristics of this mode links the dipolar order to the tilt angle of the organic cations. The thermal evolution of the Raman spectrum demonstrates the displacive component of the phase transition in combination with order-disorder phenomena and the importance of the organic-inorganic interplay to the physical properties of the compound. The ferroelectric properties investigated here can be generalized to the family of layered organic-inorganic hybrids.

KW - x-ray diffraction

KW - Lattice dynamics

KW - Order-disorder

KW - Ab-initio

KW - Soft-mode

KW - Optical investigations

KW - Magnetic measurements

KW - Neutron scattering

KW - (CH3NH3)2 CDCL4

KW - Crystal

KW - n/a OA procedure

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DO - 10.1103/PhysRevB.89.024301

M3 - Article

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JF - Physical Review B - Condensed Matter and Materials Physics

IS - 2

M1 - 024301

ER -

Low-frequency Raman study of the ferroelectric phase transition in a layered CuCl 4 -based organic-inorganic hybrid

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