In-situ observation of needle domain evolution in barium titanate single crystals

Potnis, Prashant; Huber, J. E.

doi:10.1016/j.jeurceramsoc.2012.08.026

Cited by 15 publications

(13 citation statements)

References 14 publications

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“…Taking into account their size, orientation and morphology, the b -domains appear different from the domain walls previously observed by optical microscopy in BTO single-crystal 23 . From their Raman signature, the b -domains appear clearly as a combination of both the a -domain and c -domain that could be explained as a bundle of subdomains.…”

Section: Resultscontrasting

confidence: 76%

“…In addition, there is a clear correlation between c -domain regions (out-of-plane polarizations) and the protrusion evidenced by AFM, as well as between a -domain areas (in-plane polarization) with the trough determined by AFM. Generally, the plane of a–c -domain walls is {110} pc at 45° to the top surface 22 23 . This phenomenon results from twinning structurally induced by the ferroelastic–ferroelectric phase transition occurring at 120 °C in BTO (high temperature Pm3m cubic→tetragonal P4mm ).…”

Section: Resultsmentioning

confidence: 99%

“…The 90° ferroelastic domains are generated, each of them gives rise to two 180° ferroelectric domains. As a consequence, domain boundaries are along {110} Cubic lattice planes, with ≈45° angle between the boundary and the (100) Tetragonal a -plane or the (001) Tetragonal c -plane of the tetragonal cell 23 . Thus the alternate a–c -subdomains observed for the single crystal are due to twinning, induced either by synthesis (phase transition) or by the cutting step (ferroelastic transformation) 23 .…”

Section: Resultsmentioning

confidence: 99%

“…The twinned tetragonal model only allows ≈90° and ≈180° angles between polarization vectors of neighbouring domains 23 36 . On the contrary, rotation of the polarization between two 90° domains would be allowed by local structures of other symmetries (monoclinic, rhombohedral or orthorhombic) 37 .…”

Section: Resultsmentioning

confidence: 99%

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Ferroelectric domain wall motion induced by polarized light

et al. 2015

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Ferroelectric materials exhibit spontaneous and stable polarization, which can usually be reoriented by an applied external electric field. The electrically switchable nature of this polarization is at the core of various ferroelectric devices. The motion of the associated domain walls provides the basis for ferroelectric memory, in which the storage of data bits is achieved by driving domain walls that separate regions with different polarization directions. Here we show the surprising ability to move ferroelectric domain walls of a BaTiO3 single crystal by varying the polarization angle of a coherent light source. This unexpected coupling between polarized light and ferroelectric polarization modifies the stress induced in the BaTiO3 at the domain wall, which is observed using in situ confocal Raman spectroscopy. This effect potentially leads to the non-contact remote control of ferroelectric domain walls by light.

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Section: Resultscontrasting

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Ferroelectric domain wall motion induced by polarized light

et al. 2015

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“…[3][4][5] So far, tremendous works have been done and significant progress has been achieved in understanding the domain switching process in ferroelectric single crystals, ceramics, and thin films. [1][2][3][4][5][6][7][8][9][10][11] Previous investigations demonstrate that domain switching was usually accomplished by inhomogeneous domain nucleation followed by forward and sidewise domain wall motions. 6 In addition, the magnitude and frequency of the applied electric field, 5,7 the boundary condition of the testing specimen, 3 etc., can also significantly affect the domain switching process in ferroelectrics.…”

mentioning

confidence: 99%

The effect of domain patterns on 180° domain switching in BaTiO3 crystals during antiparallel electric field loading

2014

Applied Physics Letters

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In this Letter, the effect of domain pattern on 180° domain switching behavior in BaTiO3 crystals was investigated by using polarized light microscopy during antiparallel electric field loading. Results show that for nearly perfectly in-plane poled specimen, 180° domain switching is accomplished by successive antiparallel domain nucleation and forward domain wall motion; whereas for specimen with in-plane a-a domain pattern, 180° domain switching is achieved by two-step 90° ferroelastic domain switching. This discrepancy is explained by combined effects of the depolarization field and the mechanical constraint from the adjacent domains during 90° ferroelastic domain switching.

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Modelling and interaction of needle domains in barium titanate single crystals

Sui

Huber

2020

European Journal of Mechanics - A/Solids

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Needle domains are thin, lamellar domains that can appear as fine lines or stripes in a ferroelectric crystal. They affect the poling, switching, and other properties of ferroelectrics. A model is established to study the stress and electric fields caused by needle domains and their interaction. Considering the electrical and mechanical compatibility conditions at the tip of a needle domain, the fields are represented using equivalent edge dislocations and line charges. Accordingly, the dislocation fields derived by Barnett and Lothe for anisotropic piezoelectric media are employed. A modified Peach-Koehler force and calculations of the total energy due to the needle domains are used to study the formation, interaction and stability of needle patterns, taking full account of the strong anisotropy and electromechanical coupling present. The interaction of pairs of needle domains in an infinite piezoelectric with properties of barium titanate is found to be dominated by the electrostatic terms. This makes comb-like arrays of needle domains unstable if perfectly insulating properties are assumed. By considering redistribution of charge, stable equilibrium states for arrays of needle domains are found; these agree well with experimental observations. The model explains the stability of various observed needle patterns and also how unstable patterns evolve.

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In-situ observation of needle domain evolution in barium titanate single crystals

Cited by 15 publications

References 14 publications

Ferroelectric domain wall motion induced by polarized light

Ferroelectric domain wall motion induced by polarized light

The effect of domain patterns on 180° domain switching in BaTiO3 crystals during antiparallel electric field loading

Modelling and interaction of needle domains in barium titanate single crystals

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