Abstract

The realization of electron holography provides a new powerful tool to probe the subtle and local changes of electric and magnetic fields inside a crystal structure through the phase variation of electron wave function. For a ferroelectric system the interference fringe patterns across a domain wall are very strongly affected by the presence of surface charge compensations. If the compensation is incomplete, residue depolarization field will be present in the direction parallel to the electron beam, which can induce kink-like fringe bending. Earlier reported holographic images of ferroelectric domain walls revealed an asymmetry fringe bending. This behavior is explained through phase shifts induced by both the depolarization field and the strain field.

Original languageEnglish (US)
Pages (from-to)435-439
Number of pages5
JournalSolid State Communications
Volume86
Issue number7
DOIs
StatePublished - Jan 1 1993

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Electron holography
Domain walls
Depolarization
depolarization
holography
Ferroelectric materials
domain wall
diffraction patterns
Surface charge
Wave functions
Phase shift
Electron beams
electrons
phase shift
Crystal structure
Electric fields
asymmetry
wave functions
electron beams
Magnetic fields

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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abstract = "The realization of electron holography provides a new powerful tool to probe the subtle and local changes of electric and magnetic fields inside a crystal structure through the phase variation of electron wave function. For a ferroelectric system the interference fringe patterns across a domain wall are very strongly affected by the presence of surface charge compensations. If the compensation is incomplete, residue depolarization field will be present in the direction parallel to the electron beam, which can induce kink-like fringe bending. Earlier reported holographic images of ferroelectric domain walls revealed an asymmetry fringe bending. This behavior is explained through phase shifts induced by both the depolarization field and the strain field.",
author = "Wenwu Cao and Randall, {Clive A.}",
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