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Deformation of a bismuth ferrite nanocrystal imaged by coherent X-ray diffraction

DOI: 10.1088/1742-6596/849/1/012029 DOI Help

Authors: Marcus C. Newton (University of Southampton) , Adam Pietraszewski (University of Southampton) , Anthony Kenny (University of Southampton) , Ulrich Wagner (Diamond Light Source) , Christoph Rau (Diamond Light Source)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: X-Ray Microscopy Conference 2016 (XRM 2016)
Peer Reviewed: No

State: Published (Approved)
Published: June 2017
Diamond Proposal Number(s): 13656

Abstract: Perovskite materials that contain transition metal-oxides often exhibit multifunctional properties with considerable utility in a device setting. BiFeO3 is a multiferroic perovskite material that exhibits room temperature anti-ferromagnetic and ferroelectric ordering. Optical excitation of BiFeO3 crystals results in an elastic structural deformation of the lattice with a fast response on the pico-second time scale. Here we report on dynamic optical excitation coupled with Bragg coherent X-ray diffraction measurements to investigate the structural properties of BiFeO3 nanoscale crystals. A continuous distortion of the diffraction speckle pattern was observed with increasing illumination. This was attributed to strain resulting from photo-induced lattice deformation.

Subject Areas: Physics, Materials

Instruments: I13-1-Coherence

Added On: 03/08/2017 14:00

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