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Title: Pressure-Induced Multiferroics via Pseudo Jahn-Teller Effects and Novel Couplings

Journal Article · · Advanced Functional Materials
 [1];  [1];  [2];  [3];  [1];  [2]
  1. Tsinghua Univ., Beijing (China)
  2. Univ. of Arkansas, Fayetteville, AR (United States)
  3. Luxembourg Inst. of Science and Technology (Luxembourg)

Multiferroic materials are currently attracting a lot of interest because of the cross-coupling between their electrical and magnetic properties, which has the potential to lead to novel devices. There is a relatively small number of multiferroics and, hence, various strategies have been proposed to design materials possessing both ordered electric and magnetic dipoles. However, one strategy that has been scarcely investigated so far is the application of hydrostatic pressure because such external factor has the tendency to suppress, rather than enhance or create, electrical polarization. Here, first-principles calculations are used to demonstrate that hydrostatic pressure can, in fact, stabilize a novel polar and magnetic - and thus multiferroic - phase; the occurrence of such a phase seems very general, as it is found in many presently investigated RMnO3 compounds, where R is a rare-earth ion. The predicted structure features original pseudo Jahn-Teller effects that induce a spontaneous electrical polarization via a previously unknown structural coupling of a rather convenient form. This discovery opens a new route to create multiferroics and tunable electronic devices.

Research Organization:
Univ. of Arkansas, Fayetteville, AR (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0002220; ER-46612
OSTI ID:
1532851
Alternate ID(s):
OSTI ID: 1401033
Journal Information:
Advanced Functional Materials, Vol. 27, Issue 3; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Cited By (5)

Improper ferroelectricity at antiferromagnetic domain walls of perovskite oxides journal September 2017
Structural phases arising from reconstructive and isostructural transitions in high-melting-point oxides under hydrostatic pressure: A first-principles study journal January 2018
Electric Field Induced Room Temperature Null to High Spin State Switching: A Computational Prediction journal February 2019
High performance bulk photovoltaics in narrow-bandgap centrosymmetric ultrathin films journal January 2020
Hydrostatic pressure induced structural phase transition and mechanical properties of fluoroperovskite journal October 2019