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Structural and dielectric properties of strain-controlled epitaxial SrTiO3 thin films by two-step growth technique

Publications associées (39)

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Large impact of strain on the electro-optic effect in (Ba, Sr)TiO3 thin films: Experiment and theoretical comparison

Alexander Tagantsev

(001)-epitaxial (Ba0.5Sr0.5)TiO3 (BST) thin films with different magnitudes of compressive strain were fabricated on SrRuO3/SrTiO3 substrates by pulsed laser deposition, and their electro-optic (EO) properties were characterized by modulation ellipsometry ...

AMER INST PHYSICS2019

Single-domain (110) PbTiO3 thin films: Thermodynamic theory and experiments

Nava Setter, Alexander Tagantsev, Mahamudu Mtebwa, Brahim Dkhil

We report the thermodynamic potential for single-domain (110) thin films epitaxially grown on dissimilar cubic substrates. Using different sets of paraelectric phase elastic compliance coefficients of PbTiO3 single crystal, calculated from the experimental ...

Amer Physical Soc2016

Simultaneous electronic and magnetic excitation of cobalt by intense THz pulses

Christoph Peter Hauri, Mostafa Shalaby

We study the interaction of intense THz magnetic fields with ferromagnetic thin films. At higher field intensities, the THz electric field starts playing a role, strongly changing the dielectric properties of the cobalt thin film. ...

Ieee2016

Monocrystalline PZT thin films

Mahamudu Mtebwa

"More with less" has been the motto behind the hardware miniaturization trend in the microelectronics industry since the 1970s. Active research in the growth of oxide films, including ferroelectrics, which started soon after, followed the same trend. Meanw ...

EPFL2015

We report on the preparation of thin films of stearic acid on mica by sublimation in air. We correlate their affinity to water (hydrophobic vs. hydrophilic character) to the morphology of the films as observed by Atomic Force Miscorcopy (AFM). Submonolayer ...

Elsevier Science Bv2014

Doped SrTiO3 thin films, 55 nm thick, were epitaxially grown by Pulsed Laser Deposition with niobium contents ranging from 2 to 5 mol% on SrTiO3 and LaAlO3 substrates. The different templates result in different growth defects, film growth mechanism and th ...

2013

Growth and Magnetism of Nanostructures Investigated by STM, MOKE, and XMCD

Alberto Cavallin

This thesis presents our studies on nanostructures growth and magnetism, mainly based on scanning tunneling microscopy (STM), magneto-optical Kerr effect (MOKE), and x-ray magnetic circular dichroism (XMCD) measurements. In most of these experiments, nanos ...

EPFL2013

Piezoelectric wurtzite ScxAl1-xN (x = 0, 0.1, 0.2, 0.3) thin films were epitaxially grown by reactive magnetron co-sputtering from elemental Sc and Al targets. Al2O3(0001) wafers with TiN(111) seed and electrode layers were used as substrates. X-ray diffra ...

American Institute of Physics2012

Growth-mode induced defects in epitaxial SrTiO3 thin films grown on single crystal LaAlO3 by a two-step PLD process

Nava Setter, Paul Muralt, Alexander Tagantsev, Roman Gysel, Nan Jiang

We grew epitaxial SrTiO3 (STO) thin films on (001) LaAlO3 substrates via a two-step procedure using pulsed laser deposition and studied them with transmission electron microscopy in plane-view and cross-sectional samples. We found that partial misfit dislo ...

Cambridge University Press2011

Annealing effects on electrical properties and defects of CaCu_{3}Ti_{4}O_{12} thin films deposited by pulsed laser deposition

Paul Muralt

A systematic study was carried out to assess property changes in CaCu3Ti4O12 thin films upon annealing in air in order to evaluate the impact of oxygen vacancies on their colossal dielectric constant behavior. Highly preferentially oriented thin-film sampl ...

2010