Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates

Matyjasek, K.; Dec, J.; Miga, S.; Łukasiewicz, T.

doi:10.5488/cmp.16.31701

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…These conditions must be further investigated by e.g. in-situ real space domain mapping [9], [23], [57]. Thus, our results extend the list of possible connections between ferroic order and functional properties of materials.…”

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confidence: 81%

“…We have chosen SBN50 as a model uniaxial ferroelectric whose para-and ferroelectric phases are tetragonal (c/a ~ 0.31 e.g. [21]), formation of ferroelastic domains is forbidden and static patterns of purely ferroelectric domains are well documented [22][23][24]. We quantified the electric-field induced strain and demonstrated that the volumes of rapid domain growth / merging during the polarization reversal exhibit anomalously high deformation under electric field (~400 pC/N), comparable to that of the PZT [25,26].…”

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confidence: 99%

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Time-Resolved X-Ray Diffraction Reveals the Hidden Mechanism of High Piezoelectric Activity in a Uniaxial Ferroelectric

et al. 2015

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High piezoelectric activity of many ferroelectrics has been the focus of numerous recent studies. The structural origin of this activity remains poorly understood due to a lack of appropriate experimental techniques and mixing of different mechanisms related to ferroelectricity and ferroelasticity. Our work reports on the study of a uniaxial Sr 0.5 Ba 0.5 Nb 2 O 6 ferroelectric where the formation of regions with different spontaneous strains is ruled out for the symmetry reason and where the interrelation between piezoelectricity and ferroelectricity can be inspected in the isolated fashion. We performed X-ray diffraction experiment on a single crystalline sample under alternating electric field and observed unknown hidden-in-the-bulk mechanism, which suggests that the highest piezoelectric activity is realized in the volumes where nucleation of small ferroelectric domains takes place. This new mechanism creates a novel roadmap for designing materials with enhanced piezoelectric properties.Electromechanical coupling is the ability of some solids to convert mechanical energy into electrical and vice versa. Solids exhibiting linear electromechanical coupling are called piezoelectrics: they may become electrically polarized under a mechanical stress or mechanically deformed under an electric field. Piezoelectricity closely co-exists with ferroelectricity -the ability to switch spontaneous polarization states under an electric field. This letter reports on the observation of a new piezoelectric activity mechanism, suggesting that it may appear in a purely uniaxial ferroelectric in the form of correlation between lattice parameter and domains size. We observed this mechanism by time-resolved synchrotron Xray diffraction on SBN50 single crystals under alternating electric field. We have chosen SBN50 as a model uniaxial ferroelectric whose para-and ferroelectric phases are tetragonal The time-resolved X-ray diffraction experiment was performed using a custom-built stroboscopic data-acquisition system, which operates on the principle of a multi-channel analyser and qualifies for the investigation of repetitive processes down to the nanosecond time scale. The details of this technique are described elsewhere [4], [33][34][35] and briefly summarized in the supplemental materials. It has already been applied to the determination of small (~10 -4 Å) electric field induced bond distortions [36][37][38][39][40][41][42], the determination of

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confidence: 81%

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confidence: 99%

Time-Resolved X-Ray Diffraction Reveals the Hidden Mechanism of High Piezoelectric Activity in a Uniaxial Ferroelectric

et al. 2015

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“…In particular, dependences of the switch ing parameters on the composition and method of fab rication of the film [4], the influence of size effects on the switching parameters, and the influence of param eters of the variable electric field [5][6][7] are being stud ied. These parameters are critically important for studying the feasibility of devices based on low dimensional ferroelectric structures.…”

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confidence: 99%

Polarization switching in perforated ferroelectric films

Brekhov¹,

Ilin²,

Lavrov³

et al. 2014

Phys. Solid State

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The polarization switching in ferroelectric films of barium strontium titanate with a planar struc ture of interdigitated electrodes has been studied experimentally. The local polarization distribution in an interelectrode gap of these films in an applied electric field has been investigated using nonlinear optical microscopy. The polarization switching parameters of unperforated and perforated films have been com pared.

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Relaxor transition and properties of Mn-doped SrxBa1−xNb2O6 ferroelectric ceramics

Zhao

Wang

Zhang

et al. 2016

Ceramics International

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Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates

Cited by 4 publications

References 29 publications

Time-Resolved X-Ray Diffraction Reveals the Hidden Mechanism of High Piezoelectric Activity in a Uniaxial Ferroelectric

Time-Resolved X-Ray Diffraction Reveals the Hidden Mechanism of High Piezoelectric Activity in a Uniaxial Ferroelectric

Polarization switching in perforated ferroelectric films

Relaxor transition and properties of Mn-doped SrxBa1−xNb2O6 ferroelectric ceramics

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