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Nava Setter

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Publications associées (194)

Strong ferroelectric domain-wall pinning in BiFeO3 ceramics

Dragan Damjanovic, Nava Setter, Marija Kosec

We have studied the polarization-electric-field hysteresis, the dielectric permittivity dispersion, the piezoelectric properties, the electric-field-induced strain, and the interrelations between these properties for bismuth ferrite (BiFeO3) ceramics. The ...

American Institute of Physics2010

Cation-site intrinsic defects in Zn-doped CdTe

Nava Setter, Alexander Tagantsev, Alexandra Sarabando de Carvalho

The properties of the cation vacancy and the Te antisite, two dominant defects in CdTe and Cd1-xZnxTe alloys grown in Te-rich conditions, are examined using first-principles calculations. First, the structure, electronic levels, and migration paths of V-Cd ...

2010

Electrical tuning of dc bias induced acoustic resonances in paraelectric thin films (vol 104, 094102, 2008)

Nava Setter, Alexander Tagantsev

2010

Structural Property and Electric Field Response of a Single Perovskite PbTiO3 Nanowire Using Micro X-ray Beam

Nava Setter, Jin Wang

The structural property and electric field response of a single perovskite PbTiO3 nanowire were investigated by means of synchrotron X-ray diffraction (XRD) with a micro X-ray beam. XRD 0-20 patterns and Raman spectra confirmed the formation of the perovsk ...

2010

Anomalous dielectric peak in Mg and Li doped ZnO ceramics and thin films

Nava Setter, Alexander Tagantsev

In this manuscript we report dielectric measurements of Mg and Li doped ZnO ceramics and thin films of various compositions. We have tried to reproduce the reported ferroelectriclike behavior in doped ZnO ceramics and thin films and observed anomalous diel ...

AIP American Institute of Physics2010

Preface to Special Topic: Invited Papers from the International Symposium on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials, Aveiro, Portugal, 2009

Nava Setter

2010

Low-Symmetry Phases in Ferroelectric Nanowires

Nava Setter, Brahim Dkhil

Ferroelectric nanostructures have recently attracted much attention due to the quest of miniaturizing devices and discovering novel phenomena. In particular, studies conducted on two-dimensional and zero-dimensional ferroelectrics have revealed original pr ...

American Chemical Society (ACS)2010

Self-Assembled Perovskite-Fluorite Oblique Nanostructures for Adaptive (Tunable) Electronics

Paul Muralt, Nava Setter, Alexander Tagantsev, Silviu Cosmin Sandu, Andreas Nöth, Maxim Gureev

The relative concentration of BaTiO3 and CeO2 is shown to control the inclination of composite growth. The oblique composite structures consist of tunable BaTiO3 nanofibers embedded in a CeO2 matrix, which lowers considerably the permittivity while signifi ...

Wiley2009

Polar phonons in some compressively stressed epitaxial and polycrystalline SrTiO3 thin films

Nava Setter, Alexander Tagantsev

everal SrTiO3 (STO) thin films without electrodes processed by pulsed laser deposition, of thicknesses down to 40 nm, were studied using infrared transmission and reflection spectroscopy. The complex dielectric responses of polar phonon modes, particularly ...

2009

Control of Ferromagnetism in a (Ga,Mn)As - Based Multiferroic System via a Ferroelectric Gate

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

We report the implementation of a ferroelectric gate field effect transistor (FeFET) with a ferromagnetic (Ga,Mn)As conducting channel. The Curie temperature T-C in the channel is modulated by non-volatile poling of the gate. The ferroelectric state, and t ...

Amer Inst Physics, 2 Huntington Quadrangle, Ste 1No1 D, Melville, Ny 11747-4501 Usa2009

Retention in nonvolatile silicon transistors with an organic ferroelectric gate

Didier Bouvet, Nava Setter, Alexander Tagantsev, Igor Stolichnov, Mihai Adrian Ionescu, Roman Gysel, Giovanni Antonio Salvatore, Sebastian Riester

A silicone-based one-transistor nonvolatile memory cell has been implemented by integration of a ferroelectric polymer gate on a standard n- type metal oxide semiconductor field effect transistor. The polarization reversal in the gate results in a stable a ...

AIP American Institute of Physics2009

Li-related defects in ZnO : hybrid functional calculations

Nava Setter, Alexander Tagantsev, Alfredo Pasquarello, Audrius Alkauskas, Alexandra Sarabando de Carvalho

Hybrid density functional calculations are used to model substitutional lithium (LiZn) and interstitial lithium (Lii) defects in ZnO. The calculated transition levels and formation energies are compared to those obtained using a semilocal density functiona ...

2009

Evidence for dielectric aging due to progressive 180 degrees domain wall pinning in polydomain Pb(Zr0.45Ti0.55)O-3 thin films

Dragan Damjanovic, Nava Setter, Alexander Tagantsev, Igor Stolichnov, Pavel Mokry

An evidence that the dielectric aging in the polydomain Pb(Zr0.45Ti0.55)O-3 thin films is controlled by progressive pinning of 180 degrees domain walls is presented. To provide such a conclusion, we use a general method, which is based on the study of the ...

2009

Toward a low-voltage multiferroic transistor: Magnetic (Ga,Mn)As under ferroelectric control

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

The persistent field effect control of ferromagnetism in a diluted magnetic semiconductor by low-voltage polarizing pulses is demonstrated in a ferroelectric gate field effect transistor configuration. The Curie temperature of the (Ga,Mn)As channel is unam ...

AIP American Institute of Physics2009

Special Issue on: International Conference on Electroceramics

Nava Setter

Springer US2009

Erratum: Evidence for dielectric aging due to progressive 180° domain wall pinning in polydomain Pb(Zr0.45Ti0.55)O3 thin films [Phys. Rev. B 79, 054104 (2009)]

Dragan Damjanovic, Nava Setter, Alexander Tagantsev, Igor Stolichnov, Pavel Mokry

2009

Electromechanics on the Nanometer Scale: Emerging Phenomena, Devices, and Applications

Nava Setter

Coupling between electrical and mechanical phenomena is ubiquitous in nature and underpins the functionality of materials and systems as diversified as ferroelectrics and multiferroics to electroactive molecules to biological systems. Recent years have wit ...

2009

Non-180° domains in LiTaO3 thin films deposited by metal organic chemical vapor deposition

Nava Setter

Epitaxial lithium tantalate (LiTaO3) thin films were grown on the hexagonal plane of sapphire substrates by metal organic chemical vapor deposition. Two crystallographic variants, related to each other by 180° rotation around the c axis, as well as non-180 ...

AIP American Institute of Physics2009

A hybrid density functional study of lithium in ZnO: Stability, ionization levels, and diffusion

Nava Setter, Alexander Tagantsev, Alfredo Pasquarello, Audrius Alkauskas, Alexandra Sarabando de Carvalho

The properties of interstitial and substitutional Li in wurtzite ZnO are modeled using hybrid density functional calculations. We investigate the impact of the band-gap error on the formation energies of the two defects and their dependence on the Fermi le ...

2009

Structure and Energy of Charged Domain Walls in Ferroelectrics

Nava Setter, Alexander Tagantsev, Maxim Gureev

The problem of the structure and energy of a charged 180-degree head-to-head domain wall is considered, using Landau theory. It was found that the scales controlling the wall structure can be very different from the Debye radius. Depending on the spontaneo ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

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