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

Andrei Rotaru; Andrew Miller; Donna Claire Arnold; Finlay D. Morrison

doi:10.1098/rsta.2012.0451

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

Andrei Rotaru, Andrew Miller, Donna Claire Arnold, Finlay D. Morrison

Research output: Contribution to journal › Article › peer-review

Abstract

We discuss the strategy for development of novel functional materials with the tetragonal tungsten bronze structure. From the starting composition Ba₆GaNb₉O₃₀, 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.

Original language	English
Article number	20120451
Journal	Philosophical Transactions of the Royal Society. A, Mathematical, Physical and Engineering Sciences
Volume	372
Issue number	2009
DOIs	https://doi.org/10.1098/rsta.2012.0451
Publication status	Published - 28 Feb 2014
Event	Royal Society Discussion Meeting on Magnetoelectric phenomena and devices - The Royal Society, London, United Kingdom Duration: 24 Jul 2012 → 25 Jul 2012

Keywords

Relaxor
Ferroelectric
Multiferroic
Structure-property relationships
Dielectric properties

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10.1098/rsta.2012.0451

Morrison_RS Magnetoelectrics Discussion manuscript
Copyright © 2014 The Author(s) Published by the Royal Society. All rights reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1098/rsta.2012.0451
Accepted author manuscript, 4.08 MB

1 Finished

Magnetoelectricity & Multiferroic 4133/1: Magnetoelectricity and Multiferroic Behaviour in Tungsten Bronze Oxides
Morrison, F. (PI)
EPSRC
8/01/08 → 7/01/10
Project: Standard

1 Article

Vogel-Fulcher analysis of relaxor dielectrics with the tetragonal tungsten bronze structure: Ba₆MNb₉O₃₀ (M = Ga, Sc, In)
Rotaru, A. & Morrison, F. D., May 2015, In: Journal of Thermal Analysis and Calorimetry. 120, 2, p. 1249-1259
Research output: Contribution to journal › Article › peer-review

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title = "Towards novel multiferroic and magnetoelectric materials: dipole stability in tetragonal tungsten bronzes",

abstract = "We discuss the strategy for development of novel functional materials with the tetragonal tungsten bronze structure. From the starting composition Ba6GaNb9O30, 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.",

keywords = "Relaxor, Ferroelectric, Multiferroic, Structure-property relationships, Dielectric properties",

author = "Andrei Rotaru and Andrew Miller and Arnold, {Donna Claire} and Morrison, {Finlay D.}",

note = "authors thank the Engineering and Physical Science Research Council for funding (grant no. EP/F004133/1).; Royal Society Discussion Meeting on Magnetoelectric phenomena and devices ; Conference date: 24-07-2012 Through 25-07-2012",

year = "2014",

month = feb,

day = "28",

doi = "10.1098/rsta.2012.0451",

language = "English",

volume = "372",

journal = "Philosophical Transactions of the Royal Society. A, Mathematical, Physical and Engineering Sciences ",

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Towards novel multiferroic and magnetoelectric materials: dipole stability in tetragonal tungsten bronzes. / Rotaru, Andrei; Miller, Andrew; Arnold, Donna Claire et al.
In: Philosophical Transactions of the Royal Society. A, Mathematical, Physical and Engineering Sciences , Vol. 372, No. 2009, 20120451, 28.02.2014.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Towards novel multiferroic and magnetoelectric materials: dipole stability in tetragonal tungsten bronzes

AU - Rotaru, Andrei

AU - Miller, Andrew

AU - Arnold, Donna Claire

AU - Morrison, Finlay D.

N1 - authors thank the Engineering and Physical Science Research Council for funding (grant no. EP/F004133/1).

PY - 2014/2/28

Y1 - 2014/2/28

N2 - We discuss the strategy for development of novel functional materials with the tetragonal tungsten bronze structure. From the starting composition Ba6GaNb9O30, 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.

AB - We discuss the strategy for development of novel functional materials with the tetragonal tungsten bronze structure. From the starting composition Ba6GaNb9O30, 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.

KW - Relaxor

KW - Ferroelectric

KW - Multiferroic

KW - Structure-property relationships

KW - Dielectric properties

U2 - 10.1098/rsta.2012.0451

DO - 10.1098/rsta.2012.0451

M3 - Article

SN - 1364-503X

VL - 372

JO - Philosophical Transactions of the Royal Society. A, Mathematical, Physical and Engineering Sciences

JF - Philosophical Transactions of the Royal Society. A, Mathematical, Physical and Engineering Sciences

IS - 2009

M1 - 20120451

T2 - Royal Society Discussion Meeting on Magnetoelectric phenomena and devices

Y2 - 24 July 2012 through 25 July 2012

ER -

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

Abstract

Keywords

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Projects

Magnetoelectricity & Multiferroic 4133/1: Magnetoelectricity and Multiferroic Behaviour in Tungsten Bronze Oxides

Research output

Vogel-Fulcher analysis of relaxor dielectrics with the tetragonal tungsten bronze structure: Ba6MNb9O30 (M = Ga, Sc, In)

Cite this

Vogel-Fulcher analysis of relaxor dielectrics with the tetragonal tungsten bronze structure: Ba₆MNb₉O₃₀ (M = Ga, Sc, In)