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Nava Setter

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Publications associées (194)

Polarization screening in polymer ferroelectric films: Uncommon bulk mechanism

Nava Setter, Alexander Tagantsev, Igor Stolichnov, Evgeny Mikheev

Charge compensation at the interface is a fundamental phenomenon determining the operation conditions of thin-film devices incorporating ferroelectrics. The underlying mechanisms have been thoroughly addressed in perovskite ferroelectrics where the charge ...

American Institute of Physics2012

Ferroelectric Lead Metaniobate and its Solid Solutions: Solid State Synthesis and Characterization

Nava Setter

Orthorhombic Lead metaniobate (PbNb2O6) exhibits ferroelectric properties and has a Curie temperature, TC of 570 degrees C. This work reports on investigations made on ferroelectric Lead metaniobate, (PN) and its solid solutions with bismuth and titanium P ...

Ieee2012

Enhanced electromechanical response of ferroelectrics due to charged domain walls

Dragan Damjanovic, Nava Setter, Alexander Tagantsev, Maxim Gureev, Tomas Sluka

While commonly used piezoelectric materials contain lead, non-hazardous, high-performance piezoelectrics are yet to be discovered. Charged domain walls in ferroelectrics are considered inactive with regards to the piezoelectric response and, therefore, are ...

Nature Research2012

Ferroelectric charged domain walls in an applied electric field

Nava Setter, Alexander Tagantsev, Pavel Mokry, Maxim Gureev

The interaction of electric field with charged domain walls in ferroelectrics is theoretically addressed. Ageneral expression for the force acting per unit area of a charged domain wall carrying free charge is derived. It is shown that, in proper ferroelec ...

American Physical Society2012

Dielectric properties of K(Ta0.53Nb0.47)O-3 Single Crystal

Nava Setter, Daniel Rytz, Petr Bednyakov

Dielectric properties of K(Ta0,53Nb0,47)O-3 [KTN] single crystals with < 100 > and < 011 > crystallographic orientation were studied. Temperature dependencies of dielectric permittivity of monodomain and polydomain crystals of these orientations are compar ...

Ieee2012

Non-volatile ferroelectric gating of magnetotransport anisotropy in (Ga,Mn)(As,P)

Nava Setter, Igor Stolichnov, Evgeny Mikheev, Zhouji Huang

We demonstrate charge-mediated and non-volatile control of anisotropic magnetoresistance (AMR) in a dilute magnetic semiconductor (Ga,Mn)(As, P) with an integrated polymer ferroelectric gate. The persistent electric field associated with switchable polariz ...

American Institute of Physics2012

Impact of Strain Effects on the Stability of Ising Walls in Ferroelectrics

Nava Setter, Alexander Tagantsev, Petr Yudin

The stability of Ising 180-degree domain walls with respect to appearance of chirality is analytically studied in tetragonal perovskite-type ferroelectrics taking into account electro-mechanical coupling. It is shown that the widely used approximation negl ...

2012

Magnetic domain wall propagation under ferroelectric control

Nava Setter, Igor Stolichnov, Harry Joseph Trodahl, Evgeny Mikheev, Sebastian Riester

Control of magnetic domain walls (DWs) and their propagation is among the most promising development directions for future information-storage devices. The well-established tools for such manipulation are the spin-torque transfer from electrical currents a ...

American Physical Society2012

Long-term retention in organic ferroelectric-graphene memories

Nava Setter, Igor Stolichnov, Andras Kis, Mahmut Tosun, Santosh Raghavan

Long-term stability of high-and low-resistance states in full-organic ferroelectrically gated graphene transistors is an essential prerequisite for memory applications. Here, we demonstrate high retention performance for both memory states with fully satur ...

American Institute of Physics2012

Dielectric properties of K(Ta0.55Nb0.45)O-3 Single Crystal

Nava Setter, Daniel Rytz, Petr Bednyakov

Dielectric properties of K(Ta0,55Nb0,45)O-3 [KTN] single crystals with < 100 > and < 011 > crystallographic orientation were studied. Temperature dependencies of dielectric permittivity of monodomain and polydomain crystals of these orientations are compar ...

Ieee2012

Cold-Field Switching in PVDF-TrFE Ferroelectric Polymer Nanomesas

Nava Setter, Alexander Tagantsev, Igor Stolichnov, Evgeny Mikheev

Polarization reversal in ferroelectric nanomesas of polyvinylidene fluoride with trifluoroethylene has been probed by ultrahigh vacuum piezoresponse force microscopy in a wide temperature range from 89 to 326 K. In dramatic contrast to the macroscopic data ...

American Physical Society2012

Bichiral structure of ferroelectric domain walls driven by flexoelectricity

Nava Setter, Alexander Tagantsev, Petr Yudin

The influence of flexoelectric coupling on the internal structure of neutral domain walls in the tetragonal phase of perovskite ferroelectrics is studied. The effect is shown to lower the symmetry of 180 degrees walls which are oblique with respect to the ...

American Physical Society2012

Polarization Screening in Multiferroic (Ga,Mn)As/P(VDF-TrFE) Transistors

Nava Setter, Igor Stolichnov, Evgeny Mikheev, Sebastian Riester

Ferroelectric copolymers of polyvinylidene fluoride and trifluoroethylene are attractive gate materials because of a rather high remanent polarization, low dielectric permittivity, and easy integration on semiconductors due to the low processing temperatur ...

2011

Thermally Induced Cooperative Molecular Reorientation and Nanoscale Polarization Switching Behaviors of Ultrathin Poly(vinylidene fluoride-trifluoroethylene) Films

Nava Setter, Igor Stolichnov, Dong Guo

Ultrathin films of the ferroelectric polymer poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] have recently attracted intensive research interest due to their potential applications in emerging organic devices. As special geometry confinement syst ...

2011

Control of the Screening Ability at a Ferroelectric-Semiconductor Interface

Nava Setter, Alexander Tagantsev, Maxim Gureev

Recent progress in integrating ferroelectrics directly on silicon opens the exciting possibility of implementing ferroelectric-semiconductor devices [1]. One of the major problems for such integration is the instability of the ferroelectric state in very t ...

2011

Polarization Reversal in BiFeO3 Capacitors: Complex Behavior Revealed by PFM

Paul Muralt, Nava Setter, Alexander Tagantsev, Enrico Colla, Igor Stolichnov, Monika Iwanowska

Polarization reversal in BiFeO3 (BFO) thin films in a parallel-plate capacitor configuration has been explored using piezo-force microscopy (PFM). Through-electrode mapping of the local piezoresponse allows for direct observation of the domain growth, whic ...

2011

Effect of mechanical loading on the tuning of acoustic resonances in Ba (x) Sr1-x TiO3 thin films

Nava Setter, Alexander Tagantsev, Andreas Nöth

The effect of mechanical loading on the tuning performance of a tunable Thin Film Bulk Acoustic Wave Resonator (TFBAR) based on a Ba0.3Sr0.7TiO3 (BST) thin film has been investigated experimentally and theoretically. A membrane-type TFBAR was fabricated by ...

Springer US2010

Tunable thin film bulk acoustic wave resonator based on BaxSr1-xTiO3 thin film

Paul Muralt, Nava Setter, Alexander Tagantsev, Andreas Nöth

A tunable membrane-type thin film bulk acoustic wave resonator (TFBAR) based on a Ba0.3Sr0.7TiO3(BST) thin film has been fabricated. The resonance and antiresonance frequencies of the device can be altered by applying a dc bias: both shift down with increa ...

2010

Synchrotron X-ray diffraction study on a single nanowire of PX-phase lead titanate

Nava Setter, Silviu Cosmin Sandu, Jin Wang

Synchrotron X-ray diffraction (XRD) measurements of Pb-Ti-O fine acicular crystals (nanowires) of the so-called PX-phase have been performed. The theta-2 theta patterns of the nanowires dispersed on substrates with two different geometries indicated that t ...

2010

Structural complexity of (Na0.5Bi0.5)TiO3-BaTiO3 as revealed by Raman spectroscopy

Dragan Damjanovic, Nava Setter, Naama Klein

The structural phase diagram of the Pb-free ferroelectric (Na1/2Bi1/2)1−xBaxTiO3, x

2010

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