Skip to main content

Towards novel multiferroic and magnetoelectric materials: Dipole stability in tetragonal tungsten bronzes

Rotaru, A., Miller, A.J., Arnold, Donna C., Morrison, F.D. (2014) Towards novel multiferroic and magnetoelectric materials: Dipole stability in tetragonal tungsten bronzes. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 372 (2009). ISSN 1364-503X. (doi:10.1098/rsta.2012.0451) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1098/rsta.2012.0451

Abstract

We discuss the strategy for development of novel functional materials with the tetragonal tungsten bronze structure. From the starting composition Ba 6GaNb9O30, the effect of A- and B-site substitutions on the dielectric properties is used to develop an understanding of the origin and stability of the dipolar response in these compounds. Both tetragonal strain induced by large B-site cations and local strain variations created by isovalent A-site substitutions enhance dipole stability but result in a dilute, weakly correlated dipolar response and canonical relaxor behaviour. Decreasing cation size at the perovskite A2-site increases the dipolar displacements in the surrounding octahedra, but insufficiently to result in dipole ordering. Mechanisms introducing small A-site lanthanide cations and incorporation of A-site vacancies to induce ferroelectricity and magnetism are presented. © 2014 The Author(s).

Item Type: Article
DOI/Identification number: 10.1098/rsta.2012.0451
Additional information: Unmapped bibliographic data: C7 - 20120451 [EPrints field already has value set] LA - English [Field not mapped to EPrints] J2 - Philos. Trans. R. Soc. A Math. Phys. Eng. Sci. [Field not mapped to EPrints] AD - EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, United Kingdom [Field not mapped to EPrints] AD - Laser Department, INFLPR-National Institute for Laser, Plasma and Radiation Physics, Bvd. Atomistilor, Nr. 409, Magurele, Bucharest RO-077125, Romania [Field not mapped to EPrints] AD - School of Physical Sciences, University of Kent, Canterbury CT2 7NH, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Dielectric properties, Ferroelectric, Multiferroic, Relaxor, Structure-property relationships, A-site substitutions, Magnetoelectric materials, Multiferroics, Novel functional materials, Relaxors, Structure property relationships, Tetragonal tungsten bronze, Tetragonal tungsten-bronze structure, Dielectric properties, Ferroelectric materials, Ferroelectricity, Functional materials, Positive ions
Subjects: Q Science > QC Physics > QC176 Solid state physics
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 07 Jul 2015 10:47 UTC
Last Modified: 29 May 2019 14:43 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49056 (The current URI for this page, for reference purposes)
Arnold, Donna C.: https://orcid.org/0000-0003-0239-5790
  • Depositors only (login required):