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). pp. 420-424. ISSN 0036-8075, 1095-9203

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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
Uncontrolled Keywords:	3403 Macromolecular and Materials Chemistry, 40 Engineering, 34 Chemical Sciences, 3406 Physical Chemistry, Bioengineering
Depositing User:	Symplectic Admin
Date Deposited:	15 May 2017 08:28
Last Modified:	01 Mar 2026 09:59
DOI:	10.1126/science.1262118
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3007461
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