Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca, Sr)3Ti2O7

Jing Kong; Alicia Manjón-Sanz; Jue Liu; Frederick Marlton; Tsz Wing Lo; Dangyuan Lei; Mads Ry Vogel Jørgensen; Abhijit Pramanick

doi:10.1103/PhysRevB.107.224103

Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca, Sr)₃Ti₂O₇

Jing Kong
, Alicia Manjón-Sanz
, Jue Liu
, Frederick Marlton
, Tsz Wing Lo
, Dangyuan Lei
, Mads Ry Vogel Jørgensen
, Abhijit Pramanick^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

5 Citations (Scopus)

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Abstract

We show that in contrast to the conventional view of a mean-field Landau-type behavior, the oxygen octahedral tilt (R) and polarization (P) in the A₃B₂O₇ Ruddlesden-Popper hybrid improper ferroelectric (Ca, Sr)₃Ti₂O₇ exhibits the scaling behavior of a 2D Ising class near the para-to-ferroelectric transition temperature (T_c). We also show that P exhibits an additional transition from a 2D Ising to a 3D mean-field critical behavior at a temperature T_d < T_c, which is driven by enhanced interlayer dipolar correlations due to an increase in the ferroelectrically active B-site centered dipoles. © 2023 American Physical Society.

Original language	English
Article number	224103
Journal	Physical Review B
Volume	107
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.107.224103
Publication status	Published - 1 Jun 2023

Funding

The work described in this paper was partially supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. eg CityU 11306720). J.K. and A.P. acknowledge support from the Research Talent Hub (RTH) program of the Innovation and technology Commission (ITC), Hong Kong. A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory (Grant No. IPTS-27376 for POWGEN and NOMAD experiments). F.M. and M.R.V.J. thank the Danish Agency for Science, Technology, and Innovation for funding the instrument center DanScat

Research Keywords

DIFFRACTOMETER
PEROVSKITES

Publisher's Copyright Statement

COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: Kong, J., Manjón-Sanz, A., Liu, J., Marlton, F., Lo, T. W., Lei, D., Jørgensen, M. R. V., & Pramanick, A. (2023). Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca, Sr)3Ti2O7. Physical Review B, 107(22), [224103]. https://doi.org/10.1103/PhysRevB.107.224103. The copyright of this article is owned by American Physical Society.

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title = "Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca, Sr)3Ti2O7",

abstract = "We show that in contrast to the conventional view of a mean-field Landau-type behavior, the oxygen octahedral tilt (R) and polarization (P) in the A3B2O7 Ruddlesden-Popper hybrid improper ferroelectric (Ca, Sr)3Ti2O7 exhibits the scaling behavior of a 2D Ising class near the para-to-ferroelectric transition temperature (Tc). We also show that P exhibits an additional transition from a 2D Ising to a 3D mean-field critical behavior at a temperature Td < Tc, which is driven by enhanced interlayer dipolar correlations due to an increase in the ferroelectrically active B-site centered dipoles. {\textcopyright} 2023 American Physical Society.",

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AU - Marlton, Frederick

AU - Lo, Tsz Wing

AU - Lei, Dangyuan

AU - Jørgensen, Mads Ry Vogel

AU - Pramanick, Abhijit

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AB - We show that in contrast to the conventional view of a mean-field Landau-type behavior, the oxygen octahedral tilt (R) and polarization (P) in the A3B2O7 Ruddlesden-Popper hybrid improper ferroelectric (Ca, Sr)3Ti2O7 exhibits the scaling behavior of a 2D Ising class near the para-to-ferroelectric transition temperature (Tc). We also show that P exhibits an additional transition from a 2D Ising to a 3D mean-field critical behavior at a temperature Td < Tc, which is driven by enhanced interlayer dipolar correlations due to an increase in the ferroelectrically active B-site centered dipoles. © 2023 American Physical Society.

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Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca, Sr)₃Ti₂O₇

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GRF: Local Structure and Ferroelectric Relaxor Behavior in Dion-Jacobson Layered Perovskites

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Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca, Sr)3Ti2O7

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Funding

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GRF: Local Structure and Ferroelectric Relaxor Behavior in Dion-Jacobson Layered Perovskites

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Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca, Sr)₃Ti₂O₇