Electric field-induced tetragonal to orthorhombic phase transitions in [110]c-oriented BaTiO3 single crystals

Franzbach, D. J.; Gu, Yijia; Chen, Lei; Webber, Kyle G.

doi:10.1063/1.4769368

Cited by 28 publications

(17 citation statements)

References 35 publications

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“…Paper orthorhombic phase, which is consistent with the phenomenon in large grains [45,46]. From Fig.…”

Section: Originalsupporting

confidence: 85%

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Fang

2014

Phys. Status Solidi B

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Microstructure evolution and size effect of a two-dimensional barium titanate lattice sqaure have been studied using phasefield simulation. Based on the Landau phenomenological model, we calculated the microstructure evolution of the tetragonal and orthorhombic ferroelectric BaTiO 3 started from a single domain with various lattice sizes. A directiondependent hysteresis loop can be quantitatively described. The results show that both the phase transition with temperature and polarization switching under an external electric field are accompanied by multidomain and multiphase production in a large single-domain lattice, but synchronous changes in polarization in small lattice; As the grain size decreases, the orthorhombic ! tetragonal phase-transition temperature increased, while the tetragonal ! cubic, cubic ! tetragonal, and tetragonal ! orthorhombic phase-transition temperatures decrease. An interesting conclusion is that it shows triple hysteresis loops along the [11]-direction when the lattice size decreases to a certain size. The simulations of microstructure evolutions not only produce a good domain-switching process under various electric fields, but also provide a comprehensive microstructure evolution in the vicinity of the phase-transition points. The physics underlying the continuous evolution of microstructure with electric field and temperature is discussed.

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“…Paper orthorhombic phase, which is consistent with the phenomenon in large grains [45,46]. From Fig.…”

Section: Originalsupporting

confidence: 85%

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Fang

2014

Phys. Status Solidi B

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“…Alternatively, it may also be possible that bias induced color change is associated with the (electric) field induced structural change [27] of the molecule which may lead to band gap variation and hence change in optical properties [28]. To discount this effect control experiment was done by sandwiching viologen between two quartz substrates without the ITO electrode.…”

Section: Resultsmentioning

confidence: 99%

Interfacial redox centers as origin of color switching in organic electrochromic device

et al. 2017

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Fabrication and operation of simple solid state electrochromic devices using ethyl viologen diperchlorate in a polymer matrix is presented here. In-situ Raman and transmission/absorption studies have been done to establish the origin of bias induced color change, between a transparent and navy blue color, in the electrochromic device. The origin of bias induced color change has been attributed to the bias induced redox switching between its viologen dication and free redicle forms. Fundamental reason behind colour changes of viologen molecule has been established. In-situ UV-Vis spectra reveals that the navy blue color of the device under biased condition is not due to increase in the transparency corresponding to blue wavelength but due to suppression of the transparency corresponding to the complementary colors. Absorption modulation has been reported from the device with good ON/OFF contrast of the device.

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“…The field-induced phase transitions in single domain ferroelectrics can be described with the phenomenological Landau theory in terms of the order parameter polarization [22, 23, 25]. The Devonshire form of the free energy density is given by where α , γ and δ are the reciprocal dielectric susceptibility and the higher-order dielectric stiffnesses at constant electric field, P are the components of polarization, ε is the strain tensor, E is the applied electric field and q are the cubic electrostrictive coefficients [55].…”

Section: Resultsmentioning

confidence: 99%

“…Following the work of Bell [23, 24] and Franzbach et al [25] a thermodynamic analysis was presented, which suggested that stress-induced phase transitions could be responsible for the observed behavior. Similar observations of the stress-dependent shift in phase of perovskite ferroelectrics have been previously presented, where mismatch strains were found to significantly shift the phase transition temperature, induce new phases and change the order of the transition in thin films [26–28] and in bulk materials [29–31].…”

Section: Introductionmentioning

confidence: 99%

Electric-field-induced phase transitions in co-doped Pb(Zr_1−xTi_x)O₃at the morphotropic phase boundary

Franzbach

Seo

Studer

et al. 2014

Science and Technology of Advanced Materials

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The strain- and polarization-electric field behavior was characterized at room temperature for Pb0.98Ba0.01(Zr1−xTix)0.98Nb0.02O3, 0.40 ⩽ x ⩽ 0.60. The investigated compositions were located in the vicinity of the morphotropic phase boundary, giving insight into the influence of crystal structure on the hysteretic ferroelectric behavior. The remanent strain of particular compositions is shown to be larger than theoretically allowed by ferroelectric switching alone, indicating the presence of additional remanent strain mechanisms. A phenomenological free energy analysis was used to simulate the effect of an applied electric field on the initial equilibrium phase. It is shown that electric-field-induced phase transitions in polycrystalline ferroelectrics can account for the experimental observations. The experimental and simulation results are contrasted to neutron diffraction measurements performed on representative compositions in the virgin and remanent states.

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Electric field-induced tetragonal to orthorhombic phase transitions in [110]c-oriented BaTiO3 single crystals

Cited by 28 publications

References 35 publications

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Interfacial redox centers as origin of color switching in organic electrochromic device

Electric-field-induced phase transitions in co-doped Pb(Zr_1−xTi_x)O₃at the morphotropic phase boundary

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Electric field-induced tetragonal to orthorhombic phase transitions in [110]c-oriented BaTiO3 single crystals

Cited by 28 publications

References 35 publications

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Interfacial redox centers as origin of color switching in organic electrochromic device

Electric-field-induced phase transitions in co-doped Pb(Zr1−xTix)O3at the morphotropic phase boundary

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Electric-field-induced phase transitions in co-doped Pb(Zr_1−xTi_x)O₃at the morphotropic phase boundary