Ferroelectricity in the 1 mu C cm(-2) range induced by canted antiferromagnetism in (LaMn3)Mn4O12

Author(s):Show less -

Gauzzi, A. ^[1] ; Milton, F. P. ^[2] ; Pascotto Gastaldo, V ^[2] ; Verseils, M. ^[1] ; Gualdi, A. J. ^[2] ; von Dreifus, D. ^[2] ; Klein, Y. ^[1] ; Garcia, D. ^[2] ; de Oliveira, A. J. A. ^[2] ; Bordet, P. ^{[3, 4]} ; Gilioli, E. ^[5]

Affiliation

^[1] Sorbonne Univ, MNHN, CNRS, IMPMC, 4 Pl Jussieu, F-75005 Paris - France

^[2] Univ Fed Sao Carlos, Dept Fis, Rodovia Washington Luis, Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[3] CNRS, Inst NEEL, F-38042 Grenoble - France

^[4] Univ Grenoble Alpes, F-38042 Grenoble - France

^[5] CNR, Area Sci, Ist Mat Elettron & Magnetismo, I-43100 Parma - Italy

• Document type: Journal article
• Source: Applied Physics Letters; v. 115, n. 15 OCT 7 2019.
• Web of Science Citations: 1

Abstract

Pyroelectric current and field-dependent specific heat measurements on polycrystalline samples of the quadruple perovskite (LaMn3)Mn4O12 give evidence of ferroelectricity driven by the canted antiferromagnetic ordering of the B-site Mn3+ ions at TN,B=78 K with record large remnant electric polarization up to 0.56 mu C cm(-2). X-ray diffraction measurements indicate an anomalous behavior of the monoclinic beta angle at TN,B, which suggests that the polarization lies in the ac-plane, where the moments are collinear, and that symmetric exchange striction is the mechanism of spin-driven ferroelectricity. Polarization values up to similar to 3-6 mu C cm(-2) are expected in single crystals or epitaxial films, which would enable the development of practical multiferroic applications. (AU)

• FAPESP's process: 13/27097-4 - Magnetic and electrical properties of multiferroic systems: single-phase and composites
• Grantee: Vinicius Pascotto Gastaldo
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 12/21171-5 - Study of the magnetoelectric coupling in quadruple perovskites
• Grantee: Adilson Jesus Aparecido de Oliveira
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• FAPESP's process: 17/24995-2 - Magnetism in multifunctional materials
• Grantee: Adilson Jesus Aparecido de Oliveira
• Support Opportunities: Regular Research Grants