The dielectric relaxation modes in low bismuth doped SrTiO3 were studied at temperatures 1.5–300 K and frequencies up to 1.8 GHz. We observe two modes, at 8 K ~mode I! and 65 K ~mode V!, which also occur in single-crystalline SrTiO3. With Bi doping, two further dielectric peaks, 18 K ~mode II! and 30 K ~mode III!, are induced in both real and imaginary parts of the permittivity on the quantum p...

Bi3.25Nd0.75Ti3O12 (BNT) ferroelectric thin films with a thickness of f0.5 Am, on substrates of Pt/Ti/SiO2/Si, (100) SrTiO3 and (100) MgO, with a 0.4-Am-thick La0.7Sr0.3MnO3 (LSMO) layer as bottom electrode, were deposited via pulsed laser deposition. The multilayer thin films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrical measurement. The LSMO ...

Oxide nanoelectronics is a rapidly growing field which seeks to develop novel materials with multifunctional behavior at nanoscale dimensions. Oxide interfaces exhibit a wide range of properties that can be controlled include conduction, piezoelectric behavior, ferromagnetism, superconductivity and nonlinear optical properties. Recently, methods for controlling these properties at extreme nanos...

TiO2 (band gap = 3.0 eV) and SrTiO3 (band gap = 3.2 eV) codoped with nickel and either tantalum or niobium ions showed photocatalytic activities for O2 evolution from an aqueous silver nitrate solution and H2 evolution from an aqueous methanol solution under visible light irradiation (lambda > 420 nm). The visible-light responses were due to the charge-transfer transition from the electron dono...

This article deals with the dielectric properties of polydimethylsiloxane (PDMS) nanocomposites filled SrTiO3 nanoparticles. The investigations were performed over a very broad range frequencies (20 Hz to 3 THz). Almost no dispersion was observed in all composites at room temperature entire measurement frequencies, and losses also low under these conditions (<1.9). lower temperatures (below 280...

Thin films of phase-pure perovskite PLT (Pb0.95La0.05Ti0.9875O3) were deposited in situ onto Si, Pt/Ti/SiO2 /Si, and SrTiO3 /Si substrates by pulsed laser deposition from stoichiometric targets. No Pb loss was observed in the near-surface region. The blocking of the interdiffusion between inner Si substrate and the outer PLT films by SrTiO3 buffer layer was evidenced using x-ray diffraction ~XR...

Thin films of perovskite manganite La0.7Ca0.3MnO3 were grown epitaxially on SrTiO3(100), MgO(100) and LaAlO3(100) substrates by the pulsed laser deposition method. Microscopic structures of these thin film samples as well as a bulk sample were fully determined by x-ray diffraction measurements. The unit cells of the three films have different shapes, i.e., contracted tetragonal, cubic, and elon...

Novel behavior has been observed at the interface of LaAlO3/SrTiO3 heterostructures such as two dimensional metallic conductivity, magnetic scattering and superconductivity. However, both the origins and quantification of such behavior have been complicated due to an interplay of mechanical, chemical and electronic factors. Here chemical and strain profiles near the interface of LaAlO3/SrTiO3 h...

The temperature dependent Hall mobility data from La-doped SrTiO3 thin films are analyzed and modeled considering various electron scattering mechanisms. We find that a ∼6 meV transverse optical phonon deformation potential scattering mechanism is necessary to explain the dependence of transport on temperature between 10–200 K. Also, we find that the low temperature electron mobility in intrins...

With recent developments in the field of spin-orbitronics, two-dimensional electron gases (2DEGs) with Rashba-type spin-orbit coupling have emerged as an important component spin-based devices. One promising platforms is 2DEG SrTiO3-based structures, which has been fundamental building block oxide electronics. The formed due to redox reactions at metal/SrTiO3 interfaces incorporated into magnet...