Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca, Sr)3Ti2O7
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Original language | English |
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Article number | 224103 |
Journal / Publication | Physical Review B |
Volume | 107 |
Issue number | 22 |
Publication status | Published - 1 Jun 2023 |
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DOI | DOI |
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85163300269&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(65ec4cdd-67a7-4201-9224-c2219c297546).html |
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. © 2023 American Physical Society.
Research Area(s)
- DIFFRACTOMETER, PEROVSKITES
Citation Format(s)
Scaling behavior of order parameters for the hybrid improper ferroelectric (Ca, Sr)3Ti2O7. / Kong, Jing; Manjón-Sanz, Alicia; Liu, Jue et al.
In: Physical Review B, Vol. 107, No. 22, 224103, 01.06.2023.
In: Physical Review B, Vol. 107, No. 22, 224103, 01.06.2023.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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