Hybrid improper ferroelectricity in Ruddlesden-Popper Ca3(Ti,Mn)2O7 ceramics
Creators
- 1. Laboratory of Dielectric Materials, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027 (China)
- 2. Department of Physics, Shanghai University, 99 Shangda Road, Shanghai 200444 (China)
Description
The hybrid improper ferroelectricity (HIF) has been proposed as a promising way to create multiferroic materials with strong magnetoelectric coupling by the first-principle calculation, and the experimental evidences of HIF in Ruddlesden-Poper Ca3(Ti1−xMnx)2O7 (x = 0, 0.05, 0.1, and 0.15) ceramics have been shown in the present work. The room temperature ferroelectric hysteresis loops are observed in these ceramics, and a polar orthorhombic structure with two oxygen tilting modes has been confirmed by the X-ray powder diffraction. A first-order phase transition around 1100 K in Ca3Ti2O7 was evidenced, and the temperatures of phase transitions decrease linearly with increasing of the contents of Mn4+ ions. Based on the result of first-principle calculations, the polarization should be reversed by switching through the mediated Amam phase in Ca3Ti2O7 ceramics
Additional details
Identifiers
- DOI
- 10.1063/1.4921624;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 106
- Journal Issue
- 20
- Journal Page Range
- p. 202903-202903.4
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 46108221
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- CALCIUM COMPOUNDS; CERAMICS; ELECTRICAL PROPERTIES; FERROELECTRIC MATERIALS; HYSTERESIS; MAGNETIC PROPERTIES; MANGANESE COMPOUNDS; MANGANESE IONS; ORTHORHOMBIC LATTICES; OXYGEN; PHASE TRANSFORMATIONS; POLARIZATION; TITANIUM OXIDES; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIELECTRIC MATERIALS; DIFFRACTION; ELEMENTS; IONS; MATERIALS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; THREE-DIMENSIONAL LATTICES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- (c) 2015 AIP Publishing LLC