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Nava Setter

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Publications associées (194)

Superdomain Structure in Epitaxial Tetragonal PZT Thin Films Under Tensile Strain

Nava Setter, Ludwig Feigl

The a/c domain pattern of tetragonal PbZr0.10Ti0.90O3 thin films under tensile misfit strain is investigated by piezoresponse force microscopy and X-ray diffraction. The results show a hierarchical ordering of the dense a/c domain structure into larger sup ...

Taylor & Francis2014

Effect of elastic compliances and higher order Landau coefficients on the phase diagram of single domain epitaxial Pb(Zr, Ti)O-3 (PZT) thin films

Nava Setter, Alexander Tagantsev, Mahamudu Mtebwa

We report the qualitative study of the influence of both elastic compliances and higher order terms of Landau free energy potential on the phase diagram of Pb(Zr0.5Ti0.5)O-3 thin films by using a single domain Landau theory. Although the impact of elastic ...

Amer Inst Physics2014

Compliant ferroelastic domains in epitaxial Pb(Zr, Ti)O-3 thin films

Nava Setter, Silviu Cosmin Sandu, Ludwig Feigl

Ordered patterns of highly compliant ferroelastic domains have been created by use of tensile strained epitaxial Pb(Zr, Ti)O-3 thin films, of very low defect density, grown on DyScO3 substrates. The effect of 180 degrees switching on well-ordered a/c 90 de ...

Amer Inst Physics2014

Analysis of composition homogeneity and polarization orientation of PZT submicron fibers by micro-Raman spectroscopy

Nava Setter, Silviu Cosmin Sandu, Jin Wang

Micro-Raman spectroscopy is a convenient tool to probe individual objects with a feature size on the submicron scale. The phase, composition, and orientation of Pb(Zr,Ti)O-3 fibers fabricated via hydrothermal processing have been characterized by this tech ...

Elsevier Sci Ltd2014

Solid Solutions of Lead Metaniobate-Stabilization of the Ferroelectric Polymorph and the Effect on the Lattice Parameters, Dielectric, Ferroelectric, and Piezoelectric Properties

Dragan Damjanovic, Nava Setter, Alberto Biancoli, Mtabazi Geofrey Sahini, Barbara Maraston Fraygola

Ferroelectric orthorhombic lead metaniobate (PbNb2O6) is known to be metastable with respect to the thermodynamically stable nonferroelectric rhombohedral polymorph. The high-temperature tetragonal to low temperature rhombohedral phase transition is recons ...

Wiley-Blackwell2014

Elastic Coupling between Nonferroelastic Domain Walls

Nava Setter, Alexander Tagantsev, Petr Yudin, Konstantin Shapovalov

We reveal a strong elastic interaction between nonferroelastic domain walls in ferroelectric thin films. This interaction, having no analogue in bulk materials, is governed by elastic fields that are associated with the domain walls and extends to distance ...

American Physical Society2014

Influence of flexoelectric coupling on domain patterns in ferroelectrics

Nava Setter, Alexander Tagantsev, Petr Yudin

Using Ginzburg-Landau theory and two-dimensional (2D) phase field simulations, we analyze the influence of flexoelectric coupling on the domain patterns in ferroelectrics. The phase field simulations predict that a high strength of the flexoelectric coupli ...

American Physical Society2014

Persistent conductive footprints of 109 degrees domain walls in bismuth ferrite films

Nava Setter, Enrico Colla, Igor Stolichnov, Monika Iwanowska

Using conductive and piezoforce microscopy, we reveal a complex picture of electronic transport at weakly conductive 109 degrees domain walls in bismuth ferrite films. Even once initial ferroelectric stripe domains are changed/erased, persistent conductive ...

Amer Inst Physics2014

Closed-circuit domain quadruplets in BaTiO3 nanorods embedded in a SrTiO3 film

Nava Setter

Cylindrical BaTiO3 nanorods embedded in < 100 >-oriented SrTiO3 epitaxial film in a brushlike configuration are investigated in the framework of the Ginzburg-Landau-Devonshire model. It is shown that strain compatibility at BaTiO3/SrTiO3 interfaces keeps B ...

Amer Physical Soc2014

Controlled stripes of ultrafine ferroelectric domains

Nava Setter, Alexander Tagantsev, Igor Stolichnov, Silviu Cosmin Sandu, Tomas Sluka, Mahamudu Mtebwa, Petr Yudin, Ludwig Feigl, Xiankui Wei, Konstantin Shapovalov

In the pursuit of ferroic-based (nano) electronics, it is essential to minutely control domain patterns and domain switching. The ability to control domain width, orientation and position is a prerequisite for circuitry based on fine domains. Here, we deve ...

Nature Publishing Group2014

Piezoelectric properties of twinned ferroelectric perovskites with head-to-head and tail-to-tail domain walls

Nava Setter, Petr Ondrejkovic

Longitudinal piezoelectric coefficient of a twinned ferroelectric perovskite material with an array of partially compensated head-to-head and tail-to-tail 90-degree domain walls has been studied by phase-field simulations in the framework of the Ginzburg-L ...

American Physical Society2013

Defect ordering and defect-domain-wall interactions in PbTiO3: A first-principles study

Dragan Damjanovic, Nava Setter, Nicola Marzari, Anand Chandrasekaran

The properties of ferroelectric materials, such as lead zirconate titanate (PZT), are heavily influenced by the interaction of defects with domain walls. These defects are either intrinsic or are induced by the addition of dopants. We study here PbTiO3 (th ...

Amer Physical Soc2013

Structural phase transitions and electronic phenomena at 180-degree domain walls in rhombohedral BaTiO3

Nava Setter, Alexander Tagantsev, Petr Yudin

The structure and electronic phenomena at the 180-degree domain wall in the rhombohedral phase of BaTiO3 are described using Landau-Ginzburg-Devonshire theory. Dependent on the wall orientation, two types of domain wall behaviors are identified. The low-en ...

American Physical Society2013

Conductivity and Ferroelectric Hysteresis in Bi4Ti3O12 Single Crystals Around Room Temperature

Dragan Damjanovic, Nava Setter

The dielectric response in Bi4Ti3O12 single crystals was studied at subswitching conditions at relative low temperatures (20-250 degrees C) and frequencies (100 mHz to 10kHz) both in-plane and out-of-plane. Electron-holes are likely to be the major charge ...

Taylor & Francis Ltd2013

Bistability of ferroelectric domain walls: Morphotropic boundary and strain effects

Nava Setter, Alexander Tagantsev, Petr Yudin

The internal structure of neutral 180 degrees domain walls in perovskite-type ferroelectrics is studied in terms of Landau theory taking into account electromechanical coupling. The study is focused on the wall bistability, a factor of potential interest f ...

American Physical Society2013

Free-electron gas at charged domain walls in insulating BaTiO3

Nava Setter, Alexander Tagantsev, Tomas Sluka, Petr Bednyakov

Hetero interfaces between metal-oxides display pronounced phenomena such as semiconductor-metal transitions, magnetoresistance, the quantum hall effect and superconductivity. Similar effects at compositionally homogeneous interfaces including ferroic domai ...

Nature Publishing Group2013

Ferroelectric control of magnetic domains in ultra-thin cobalt layers

Nava Setter, Igor Stolichnov, Zhouji Huang

Non-volatile ferroelectric control of magnetic domains has been demonstrated in ultra-thin cobalt layers at room temperature. The sensitivity of magnetic anisotropy energy to the electronic structure in a few atomic layers adjacent to the interface allows ...

American Institute of Physics2013

The origin of antiferroelectricity in PbZrO3

Nava Setter, Alexander Tagantsev, Kaushik Vaideeswaran

Antiferroelectrics are essential ingredients for the widely applied piezoelectric and ferroelectric materials: the most common ferroelectric, lead zirconate titanate is an alloy of the ferroelectric lead titanate and the antiferroelectric lead zirconate. A ...

Nature Publishing Group2013

Dielectric and Piezoelectric Properties of K(Ta0.51Nb0.49)O3 Single Crystal

Nava Setter, Daniel Rytz, Petr Bednyakov

Dielectric and piezoelectric properties of K(Ta0.51Nb0.49)O3 [KTN] single crystals along [100], [001] and [011] pseudo-cubic crystallographic orientations are reported and discussed. Temperature dependencies of dielectric permittivity in tetragonal phase o ...

2012

Mechanism of hydrothermal growth of ferroelectric PZT nanowires

Nava Setter, Silviu Cosmin Sandu, Alexandre Durussel, Jin Wang, Mtabazi Geofrey Sahini

The formation mechanism of hydrothermally grown monocrystalline ferroelectric PZT nanowires is investigated. It is shown that the growth proceeds via a two-step process. Particles of the centrosymmetric PX-phase grow initially, having a fibrous morphology ...

2012

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