Change in the magnetic structure of (Bi,Sm)FeO{sub 3} thin films at the morphotropic phase boundary probed by neutron diffraction

We report on the evolution of the magnetic structure of BiFeO{sub 3} thin films grown on SrTiO{sub 3} substrates as a function of Sm doping. We determined the magnetic structure using neutron diffraction. We found that as Sm increases, the magnetic structure evolves from a cycloid to a G-type antife...

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Bibliographic Details
Published in:APL materials 2014-11, Vol.2 (11)
Main Authors: Maruyama, Shingo, Anbusathaiah, Varatharajan, Takeuchi, Ichiro, Fennell, Amy, Enderle, Mechthild, Ratcliff, William D.
Format: Article
Language:English
Subjects:
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
BISMUTH COMPOUNDS
CONCENTRATION RATIO
ELECTRIC FIELDS
FERRITES
IRON OXIDES
MATERIALS SCIENCE
NEUTRON DIFFRACTION
PIEZOELECTRICITY
SAMARIUM COMPOUNDS
STRONTIUM TITANATES
SUBSTRATES
TEMPERATURE RANGE 0273-0400 K
THIN FILMS
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Summary:We report on the evolution of the magnetic structure of BiFeO{sub 3} thin films grown on SrTiO{sub 3} substrates as a function of Sm doping. We determined the magnetic structure using neutron diffraction. We found that as Sm increases, the magnetic structure evolves from a cycloid to a G-type antiferromagnet at the morphotropic phase boundary, where there is a large piezoelectric response due to an electric-field induced structural transition. The occurrence of the magnetic structural transition at the morphotropic phase boundary offers another route towards room temperature multiferroic devices.
ISSN:2166-532X
2166-532X
DOI:10.1063/1.4901294