Tilt engineering of spontaneous polarization and magnetization above 300 K in a bulk layered perovskite



Pitcher, Michael ORCID: 0000-0003-2044-6774, Mandal, Pranab, Dyer, Matthew ORCID: 0000-0002-4923-3003, Alaria, Jonathan ORCID: 0000-0001-5868-0318, Borisov, Pavel, Niu, Hongjun, Claridge, John ORCID: 0000-0003-4849-6714 and Rosseinsky, Matthew ORCID: 0000-0002-1910-2483
(2015) Tilt engineering of spontaneous polarization and magnetization above 300 K in a bulk layered perovskite. Science, 347 (6220). 420 - 424.

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Abstract

Crystalline materials that combine electrical polarization and magnetization could be advantageous in applications such as information storage, but these properties are usually considered to have incompatible chemical bonding and electronic requirements. Recent theoretical work on perovskite materials suggested a route for combining both properties. We used crystal chemistry to engineer specific atomic displacements in a layered perovskite, (CaySr1–y)1.15Tb1.85Fe2O7, that change its symmetry and simultaneously generate electrical polarization and magnetization above room temperature. The two resulting properties are magnetoelectrically coupled as they arise from the same displacements.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 15 May 2017 08:28
Last Modified: 17 May 2021 23:11
DOI: 10.1126/science.1262118
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3007461