A polar corundum oxide displaying weak ferromagnetism at room temperature.
J Am Chem Soc
; 134(8): 3737-47, 2012 Feb 29.
Article
en En
| MEDLINE
| ID: mdl-22280499
ABSTRACT
Combining long-range magnetic order with polarity in the same structure is a prerequisite for the design of (magnetoelectric) multiferroic materials. There are now several demonstrated strategies to achieve this goal, but retaining magnetic order above room temperature remains a difficult target. Iron oxides in the +3 oxidation state have high magnetic ordering temperatures due to the size of the coupled moments. Here we prepare and characterize ScFeO(3) (SFO), which under pressure and in strain-stabilized thin films adopts a polar variant of the corundum structure, one of the archetypal binary oxide structures. Polar corundum ScFeO(3) has a weak ferromagnetic ground state below 356 K-this is in contrast to the purely antiferromagnetic ground state adopted by the well-studied ferroelectric BiFeO(3).
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Óxidos
/
Temperatura
/
Óxido de Aluminio
Idioma:
En
Revista:
J Am Chem Soc
Año:
2012
Tipo del documento:
Article
País de afiliación:
Reino Unido