Evolution of ferroelectric domain structures embedded inside polycrystalline BaTiO3 during heating

Varlioglu, Mesut; Üstündag, Ersan; Tamura, Nobumichi; Jones, Jacob L.

doi:10.1063/1.3311565

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…A similar situation has also been observed in the tetragonal phase of BaTiO 3 ceramics, where the (-110) c plane is broken into stripes of alternative 180 and 90 walls, but the stripes boundary lines are along [111] c . 8,9 In contrast, such a fine and complex domain structure is not found in sample B. As is shown in Fig.…”

Section: Resultsmentioning

confidence: 79%

Unusual dielectric behavior and domain structure in rhombohedral phase of BaTiO3 single crystals

Wang

Damjanović

et al. 2011

Journal of Applied Physics

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It was noticed long time ago that the dielectric permittivity of BaTiO 3 single crystals in the rhombohedral phase varies from observation to observation, but the microstructure mechanism behind this phenomenon remained unclear. We show that the variations in susceptibility can be related to the variable domain structure introduced by different pre-treatments at higher temperatures: Electrical depoling at room temperature leads to nano-sized domains and ultrahigh susceptibility in rhombohedral phase, whereas thermal annealing at 450 C results in micro-sized domains and relatively lower dielectric permittivity. The influence of the pre-treatments on domains evolution is tentatively rationalized with a stress accommodation mechanism. The ultrahigh dielectric permittivity could be ascribed to the by-produced 180 -domain walls in the ultrafine domain structure. V

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Section: Resultsmentioning

confidence: 79%

Unusual dielectric behavior and domain structure in rhombohedral phase of BaTiO3 single crystals

Wang

Damjanović

et al. 2011

Journal of Applied Physics

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“…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%

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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“…• C [24] from capacitance versus temperature measurements with a separate BaTiO 3 sample made from the same processing batch. We first discuss the phase transformation by analyzing diffraction patterns as observed directly on the detector.…”

Section: Resultsmentioning

confidence: 99%

Thermal and Electric Field-Dependent Evolution of Domain Structures in Polycrystalline BaTiO3 Using the 3D-XRD Technique

Varlioglu

Lienert

Park

et al. 2010

Texture, Stress, and Microstructure

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The evolution of ferroelectric domain structures inside a single grain embedded in a polycrystalline BaTiO3 ceramic was investigated under temperature and electric field using the three-dimensional X-ray diffraction (3D-XRD) method. The orientation of domains within the grain was studied during the phase transformation from the cubic to tetragonal crystal structure. The peak widths broadened from 0.10 ± 0.01• to 0.29 ± 0.08• along the azimuthal direction during cooling. Four individual tetragonal domain structures were developed from the cubic grain. A twinning model based on {101} habit planes is discussed. While the twinning model predicts 89.47• misorientation between 90• domains and 1.049• misorientation between domain variants, the measured misorientations neither support the twinning model nor are the domain structures mutually orthogonal. The average misorientation of the domain structures at room temperature with respect to the cubic grain was about 0.3• . Upon application of an electric field, the volume fractions of the domain structures changed systematically favoring growth of domain structures with small polarization angle with respect to applied field direction. No rotation of domain structures was observed upon application of an electric field which is consistent with domain boundary migration.

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Evolution of ferroelectric domain structures embedded inside polycrystalline BaTiO3 during heating

Cited by 5 publications

References 29 publications

Unusual dielectric behavior and domain structure in rhombohedral phase of BaTiO3 single crystals

Unusual dielectric behavior and domain structure in rhombohedral phase of BaTiO3 single crystals

Ferroelectric domain wall motion induced by polarized light

Thermal and Electric Field-Dependent Evolution of Domain Structures in Polycrystalline BaTiO3 Using the 3D-XRD Technique

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