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Bi2CoO2F4-A Polar, Ferrimagnetic Aurivillius Oxide-Fluoride.
Scott, Euan A S; Mitoudi Vagourdi, Eleni; Johnsson, Mats; Cascos, Vanessa; John, Filbin; Pickup, Dave; Chadwick, Alan V; Djani, Hania; Bousquet, Eric; Zhang, Weiguo; Halasyamani, P Shiv; McCabe, Emma E.
Afiliação
  • Scott EAS; School of Physical Sciences, University of Kent, Kent, Canterbury CT2 7NH, U.K.
  • Mitoudi Vagourdi E; Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden.
  • Johnsson M; Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden.
  • Cascos V; School of Physical Sciences, University of Kent, Kent, Canterbury CT2 7NH, U.K.
  • John F; School of Physical Sciences, University of Kent, Kent, Canterbury CT2 7NH, U.K.
  • Pickup D; School of Physical Sciences, University of Kent, Kent, Canterbury CT2 7NH, U.K.
  • Chadwick AV; School of Physical Sciences, University of Kent, Kent, Canterbury CT2 7NH, U.K.
  • Djani H; Centre de Développement des Technologies Avancées, cité 20 aout 1956, Baba Hassan, Alger 16081, Algeria.
  • Bousquet E; Theoretical Materials Physics, Q-MAT, CESAM, Université de Liège, Allée 6 août, 17, B-4000, Sart Tilman, Liège 4000, Belgium.
  • Zhang W; Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204, United States.
  • Halasyamani PS; Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204, United States.
  • McCabe EE; School of Physical Sciences, University of Kent, Kent, Canterbury CT2 7NH, U.K.
Chem Mater ; 34(21): 9775-9785, 2022 Nov 08.
Article em En | MEDLINE | ID: mdl-36397835
ABSTRACT
Aurivillius oxides have been a research focus due to their ferroelectric properties, but by replacing oxide ions by fluoride, divalent magnetic cations can be introduced, giving Bi2 MO2F4 (M = Fe, Co, and Ni). Our combined experimental and computational study on Bi2CoO2F4 indicates a low-temperature polar structure of P21 ab symmetry (analogous to ferroelectric Bi2WO6) and a ferrimagnetic ground state. These results highlight the potential of Aurivillius oxide-fluorides for multiferroic properties. Our research has also revealed some challenges associated with the reduced tendency for polar displacements in the more ionic fluoride-based systems.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Chem Mater Ano de publicação: 2022 Tipo de documento: Article
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Chem Mater Ano de publicação: 2022 Tipo de documento: Article