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Back-scattered electron visualization of ferroelectric domains in a BiFeO 3 epitaxial film
- Source :
- Applied Physics Letters, Applied Physics Letters, American Institute of Physics, 2017, 111 (22), pp.222901. ⟨10.1063/1.4994180⟩
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- Three-dimensional orientation of the ferroelectric (FE) domain structure of a BiFeO3 epitaxial film was investigated by scanning electron microscopy (SEM) using back-scattered electrons and piezoresponse-force microscopy (PFM). By changing the crystallographic orientation of the sample and the electron collection angle relative to the detector, we establish a link between the orientation of polarization vectors (out-of-plane and in-plane) in the BiFeO3 film and the back-scattered electron image contrast in agreement with PFM investigations. The different FE polarization states in the domains correspond to altered crystalline environments for the impingent primary beam electrons. We postulate that the resultant back-scattered electron domain contrast arises as a result of either differential absorption (through a channelling effect) or through back-diffraction from the sample, which leads to a projected diffraction pattern super-imposed with the diffuse conventional back-scattered electron intensity. We de...
- Subjects :
- 010302 applied physics
Diffraction
Materials science
Physics and Astronomy (miscellaneous)
Condensed matter physics
Scanning electron microscope
02 engineering and technology
Electron
021001 nanoscience & nanotechnology
Channelling
Polarization (waves)
01 natural sciences
Ferroelectricity
Condensed Matter::Materials Science
Electron diffraction
0103 physical sciences
Microscopy
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
0210 nano-technology
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters, Applied Physics Letters, American Institute of Physics, 2017, 111 (22), pp.222901. ⟨10.1063/1.4994180⟩
- Accession number :
- edsair.doi.dedup.....170a19dbfd41b742bf1ab97df702bbee