Domains in Ferroic Crystals and Thin Films

Tagantsev, A. K.; Cross, L. E.; Fousek, J.

doi:10.1007/978-1-4419-1417-0

Cited by 572 publications

(558 citation statements)

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“…It is worth noticing that for this composition a film thickness higher than 6 nm is required to develop enough strain and induce domain formation. The measured domain period as a function of film thickness is consistent with Roytburd's square root law for ferroelastic domains 40,41 , as also observed in 90°a-a domains in BaTiO 3 lamellae 12 . For fitting the experimental data to Roytburd's model, we use the lattice parameters of the film and the substrate (and thus the strain values) at room temperature, as the domain freezing temperature is not known at this point.…”

Section: Resultssupporting

confidence: 84%

Super switching and control of in-plane ferroelectric nanodomains in strained thin films

et al. 2014

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With shrinking device sizes, controlling domain formation in nanoferroelectrics becomes crucial. Periodic nanodomains that self-organize into so-called 'superdomains' have been recently observed, mainly at crystal edges or in laterally confined nanoobjects. Here we show that in extended, strain-engineered thin films, superdomains with purely in-plane polarization form to mimic the single-domain ground state, a new insight that allows a priori design of these hierarchical domain architectures. Importantly, superdomains behave like strain-neutral entities whose resultant polarization can be reversibly switched by 90°, offering promising perspectives for novel device geometries.

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Section: Resultssupporting

confidence: 84%

Super switching and control of in-plane ferroelectric nanodomains in strained thin films

et al. 2014

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“…In uniaxial ferroelectrics, 180 domain walls typically separate antiparallel domains with polarization vector parallel to domain plane, so as to avoid high electrostatic energy associated with polarization discontinuity at the domain wall. 19 Consequently, charged domain walls have been rarely observed in ferroelectric materials, e.g., in PbTiO 3 crystals, 20 in PZT thin films 21 and, recently, in uniaxial organic ferroelectrics. 18 An as-grown glycine crystal has both antiparallel (neutral) and charged ferroelectric domain walls appearing as a series of steps as shown schematically in Fig.…”

Section: Resultsmentioning

confidence: 99%

Tip-induced domain structures and polarization switching in ferroelectric amino acid glycine

Seyedhosseini

Bdikin

Ivanov

et al. 2015

Journal of Applied Physics

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Bioorganic ferroelectrics and piezoelectrics are becoming increasingly important in view of their intrinsic compatibility with biological environment and biofunctionality combined with strong piezoelectric effect and a switchable polarization at room temperature. Here, we study tip-induced domain structures and polarization switching in the smallest amino acid b-glycine, representing a broad class of non-centrosymmetric amino acids. We show that b-glycine is indeed a roomtemperature ferroelectric and polarization can be switched by applying a bias to non-polar cuts via a conducting tip of atomic force microscope (AFM). Dynamics of these in-plane domains is studied as a function of an applied voltage and pulse duration. The domain shape is dictated by polarization screening at the domain boundaries and mediated by growth defects. Thermodynamic theory is applied to explain the domain propagation induced by the AFM tip. Our findings suggest that the properties of b-glycine are controlled by the charged domain walls which in turn can be manipulated by an external bias. V C 2015 AIP Publishing LLC. [http://dx

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“…The existence of such boundaries involves large polarization discontinuity with the bound charge compensated either by conductivity, or (partly) by zig-zag domain wall geometry. 50 In contrast, a 180 domain boundary (DB2) often appears separating domains with antiparallel polarization directions (Fig. 4(b)).…”

Section: Resultsmentioning

confidence: 99%

Local piezoresponse and polarization switching in nucleobase thymine microcrystals

Bdikin

Heredia

Neumayer

et al. 2015

Journal of Applied Physics

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Thymine (2-oxy-4-oxy-5 methyl pyrimidine) is one of the four nucleobases of deoxyribonucleic acid (DNA). In the DNA molecule, thymine binds to adenine via two hydrogen bonds, thus stabilizing the nucleic acid structure and is involved in pairing and replication. Here, we show that synthetic thymine microcrystals grown from the solution exhibit local piezoelectricity and apparent ferroelectricity, as evidenced by nanoscale electromechanical measurements via Piezoresponse Force Microscopy. Our experimental results demonstrate significant electromechanical activity and polarization switchability of thymine, thus opening a pathway for piezoelectric and ferroelectricbased applications of thymine and, perhaps, of other DNA nucleobase materials. The results are supported by molecular modeling of polarization switching under an external electric field. V C 2015 AIP Publishing LLC. [http://dx

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Domains in Ferroic Crystals and Thin Films

Cited by 572 publications

References 0 publications

Super switching and control of in-plane ferroelectric nanodomains in strained thin films

Super switching and control of in-plane ferroelectric nanodomains in strained thin films

Tip-induced domain structures and polarization switching in ferroelectric amino acid glycine

Local piezoresponse and polarization switching in nucleobase thymine microcrystals

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