Influence of hydrostatic pressure on the dielectric properties of CuInP2S6 and CuInP2Se6 layered crystals

Гуранич, П. П.; Шуста, В. С.; Герзанич, Е. І.; Сливка, А. Г.; Kuritsa, I; Gomonnai, O. O.

doi:10.1088/1742-6596/79/1/012009

Cited by 18 publications

(8 citation statements)

References 6 publications

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“…To quantify the electrostrictive tensor Q, we analyzed the experimental temperature dependence of the dielectric permittivity as reported by Guranich et al [19] (Figure 1…”

Section: Resultsmentioning

confidence: 99%

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Giant negative electrostriction and dielectric tunability in a van der Waals layered ferroelectric

Neumayer

Eliseev

Susner

et al. 2019

Phys. Rev. Materials

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The interest in ferroelectric van der Waals crystals arises from the potential to realize ultrathin ferroic systems owing to the reduced surface energy of these materials and the layered structure that allows for exfoliation. Here, we quantitatively unravel giant negative electrostriction of van der Waals layered copper indium thiophosphate (CIPS), which exhibits an electrostrictive coefficient Q33 as high as -3.2 m 4 /C 2 and a resulting bulk piezoelectric coefficient d33 up to -85 pm/V. As a result, the electromechanical response of CIPS is comparable in magnitude to established perovskite ferroelectrics despite possessing a much smaller spontaneous polarization of only a few µC/cm 2 . In the paraelectric state, readily accessible owing to low transition temperatures, CIPS exhibits large dielectric tunability, similar to widely-used barium strontium titanate, and as a result both giant and continuously tunable electromechanical 3 response. The persistence of electrostrictive and tunable responses in the paraelectric state indicates that even few layer films or nanoparticles will sustain significant electromechanical functionality, offsetting the inevitable suppression of ferroelectric properties in the nanoscale limit. These findings can likely be extended to other ferroelectric transition metal thiophosphates and (quasi-) two-dimensional materials and might facilitate the quest towards novel ultrathin functional devices incorporating electromechanical response.

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“…To quantify the electrostrictive tensor Q, we analyzed the experimental temperature dependence of the dielectric permittivity as reported by Guranich et al [19] (Figure 1…”

Section: Resultsmentioning

confidence: 99%

“…Ps (C/cm 2 ) 2.6 (at 293 K) *The geometry of the dielectric measurements under applied pressure was not specified in Guranich et al, [19] so that the effective coupling could not be related to Cartesian components of tensor Qij…”

Section: Resultsmentioning

confidence: 99%

Giant negative electrostriction and dielectric tunability in a van der Waals layered ferroelectric

Neumayer

Eliseev

Susner

et al. 2019

Phys. Rev. Materials

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“…Altering the choice of metal ion can give rise to Ising-type, XY or Heisenberg antiferromagnetic magnetic order, different spin states, including non-magnetic references like ZnPS 3 , and subtly differing exchange interaction strengths. These lead to a wide selection of magnetic structures and interactions, some of which are displayed in Fig 1. Intermediate compounds can also be grown through the same simple chemical vapour transport method as the parent compounds -CuInP 2 S 6 is ferroelectric [36][37][38][39] and MnFeP 2 S 6 exhibits spin-glass behaviour due to the competing Ising and Heisenberg nature of the Fe and Mn magnetic sites [40,41]. These mixed compounds promise a further rich future research direction beyond tuning and studying the 'pure' compounds discussed in this work.…”

mentioning

confidence: 99%

Tuning dimensionality in van-der-Waals antiferromagnetic Mott insulatorsTMPS₃

Coak

Jarvis

Hamidov

et al. 2019

J. Phys.: Condens. Matter

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Dimensionality is crucial in determining or controlling the magnetic, electronic and structural properties of condensed matter systems. The case of 2D and of graphene is of course a very topical example. The pairing mechanisms of unconventional superconductors such as high-temperature superconductors and FeSe are often seen to be strengthened in 2D. Additionally, new magnetic phases and structures can be found in thin films or layers of otherwise simplistic materials. Crystals with layered structures of atomic planes separated by van-der-Waals gaps form an ideal case for studying a wide

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“…The values 𝑇 𝐶 , 𝛼 𝑇 , , 𝛾 and 𝛿, are 𝑄 𝑖3 and 𝑍 𝑖33 were defined from the fitting of experimentally observed temperature dependence of dielectric permittivity [44,45,46], spontaneous polarization [47] and lattice constants [24] for hydrostatic and uniaxial pressures (see Fig. 1).…”

Section: A Reconstruction Of Cips Thermodynamic Potential From Experi...mentioning

confidence: 99%

Stress-induced phase transitions in nanoscale CuInP2S6

Morozovska

Eliseev²,

Kalinin³

et al. 2021

Phys. Rev. B

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Using Landau-Ginsburg-Devonshire approach and available experimental results we constructed multiwell thermodynamic potential of the layered ferroelectric CuInP2S6 (CIPS). The analysis of temperature dependences of the dielectric permittivity and lattice constants for different applied pressures unexpectedly reveals the critically important role of a nonlinear electrostriction in this material. With the nonlinear electrostriction included we calculated the temperature and pressure phase diagrams and spontaneous polarization of a bulk CIPS, within the assumed range of applicable temperatures and applied pressures. Using the developed thermodynamic potential, we revealed the strain-induced phase transitions in thin epitaxial СIPS films, as well as the stress-induced phase transitions in СIPS nanoparticles, which shape varies from prolate needles to oblate disks. We also revealed the strong influence of a mismatch strain, elastic stress and shape anisotropy on the phase diagrams and polar properties of a nanoscale CIPS, and derived analytical expressions allowing for elastic control of the nanoscale CIPS polar properties.Hence obtained results can be of particular interest for the strain-engineering of nanoscale layered ferroelectrics.

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Influence of hydrostatic pressure on the dielectric properties of CuInP₂S₆ and CuInP₂Se₆ layered crystals

Cited by 18 publications

References 6 publications

Giant negative electrostriction and dielectric tunability in a van der Waals layered ferroelectric

Giant negative electrostriction and dielectric tunability in a van der Waals layered ferroelectric

Tuning dimensionality in van-der-Waals antiferromagnetic Mott insulatorsTMPS₃

Stress-induced phase transitions in nanoscale CuInP2S6

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Influence of hydrostatic pressure on the dielectric properties of CuInP2S6 and CuInP2Se6 layered crystals

Cited by 18 publications

References 6 publications

Giant negative electrostriction and dielectric tunability in a van der Waals layered ferroelectric

Giant negative electrostriction and dielectric tunability in a van der Waals layered ferroelectric

Tuning dimensionality in van-der-Waals antiferromagnetic Mott insulatorsTMPS3

Stress-induced phase transitions in nanoscale CuInP2S6

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Influence of hydrostatic pressure on the dielectric properties of CuInP₂S₆ and CuInP₂Se₆ layered crystals

Tuning dimensionality in van-der-Waals antiferromagnetic Mott insulatorsTMPS₃