Change in the magnetic structure of (Bi,Sm)FeO3 thin films at the morphotropic phase boundary probed by neutron diffraction
Source abstract
Abstract
We report on the evolution of the magnetic structure of BiFeO3 thin films grown on SrTiO3 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.
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Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Underwater Acoustics Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of Maryland, College Park 1 Department of Materials Science and Engineering, , Maryland 20742, USA
Paul Scherrer Institut 2 , 5232 Villigen PSI, Switzerland
Institut Laue Langevin 3 , BP 156, 38042 Grenoble, France
NIST Center for Neutron Research, National Institute of Standards and Technology 4 , Gaithersburg, Maryland 20899, USA
Funding
US Department of Commerce
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