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Understanding the diffusion of oxygen vacancies in oxides under different external stimuli is crucial for the design of ion-based electronic devices, improve catalytic performance, etc. In this manuscript, using an external electric field…

Materials Science · Physics 2018-07-04 Lucía Iglesias , Andrés Gómez , Martí Gich , Francisco Rivadulla

Oxygen loss is one of the common defect types in perovskite oxides whose formation can be caused by a low oxygen background pressure during growth or by straining the thin film. Crystalline BaBiO3-{\delta} thin films are grown by molecular…

Epitaxially grown SrTiO$_{3}$ (STO) thin films are material enablers for a number of critical energy-conversion and information-storage technologies like electrochemical electrode coatings, solid oxide fuel cells and random access memories.…

Materials Science · Physics 2020-12-04 Zizhen Zhou , Dewei Chu , Claudio Cazorla

Tungsten trioxide is a versatile material with widespread applications ranging from electrochromic and optoelectronic devices to water splitting and catalysis of chemical reactions. For technological applications, thin films of WO3 are…

Materials Science · Physics 2018-05-22 Giordano Mattoni , Alessio Filippetti , Nicola Manca , Pavlo Zubko , Andrea D. Caviglia

While pyrochlore iridate thin films are theoretically predicted to possess a variety of emergent topological properties, experimental verification of these predictions can be obstructed by the challenge in thin film growth. Here we report…

The influence of the deposition pressure PO2 and substrate temperature TS during the growth of Bi2FeCrO6 thin films grown by pulsed laser deposition has been investigated. It is found that the high volatility of Bi makes the deposition very…

We have investigated the initial growth behavior and resulting microstructural properties of heteroepitaxial ZnO thin films prepared by pulsed laser deposition on sapphire (0001) substrates. High-resolution x-ray diffraction and…

Materials Science · Physics 2015-06-25 C. Liu , S. H. Chang , T. W. Noh , M. Abouzaid , P. Ruterana , H. H. Lee , D. -W. Kim , J. -S. Chung

We have grown VO2 thin films by laser ablation for electronic device applications. In obtaining the thin films of the pure VO2 phase, oxygen partial pressure is a critical parameter because vanadium oxides have several phases with the…

Materials Science · Physics 2007-05-23 B. G. Chae , D. H. Youn , H. T. Kim , S. Y. Maeng , K. Y. Kang

We investigate the complex relationship between the growth conditions and the structural and transport properties of $\mathrm{Ti_xO_y}$ thin films grown by molecular beam epitaxy. Transport properties ranging from metallicity to…

Complex oxide functionality, such as ferroelectricity, magnetism or superconductivity is often achieved in epitaxial thin-film geometries. Oxygen vacancies tend to be the dominant type of defect in these materials but a fundamental…

Materials Science · Physics 2022-02-23 Moloud Kaviani , Ulrich Aschauer

We report the growth of ultrathin VO$_{2}$ films on rutile TiO$_{2}$ (001) substrates via reactive molecular-beam epitaxy. The films were formed by the cyclical deposition of amorphous vanadium and its subsequent oxidation and…

Aurivillius ferroelectric $Bi_2WO_6$ (BWO) encompasses a broad range of functionalities, including robust fatigue-free ferroelectricity, high photocatalytic activity, and ionic conductivity. Despite these promising characteristics, an…

Materials Science · Physics 2021-01-28 Jihwan Jeong , Junsik Mun , Saikat Das , Jinkwon Kim , Jeong Rae Kim , Wei Peng , Miyoung Kim , Tae Won Noh

NiO layers were grown on MgO(100), MgO(110), and MgO(111) substrates by plasma-assisted molecular beam epitaxy under Ni-flux limited growth conditions. Single crystalline growth with a cube-on-cube epitaxial relationship was confirmed by…

We have investigated the atomically-resolved substrate and homoepitaxial thin film surfaces of SrTiO3(001) using low-temperature scanning tunneling microscopy/spectroscopy (STM/STS) combined with pulsed laser deposition (PLD). It was found…

Materials Science · Physics 2015-05-18 Takeo Ohsawa , Katsuya Iwaya , Ryota Shimizu , Tomihiro Hashizume , Taro Hitosugi

We report on a systematic study of the growth of epitaxial TiO2 films deposited by pulsed laser deposition on Ti-terminated (001) SrTiO3 single crystals. By using in-situ reflection high energy electron diffraction, low energy electron…

Materials Science · Physics 2015-05-27 M. Radovic , M. Salluzzo , Z. Ristic , R. Di Capua , N. Lampis , R. Vaglio , F. Miletto Granozio

Thin films of Co-TiO2 are deposited on silicon and quartz substrates using Pulse Laser Deposition (PLD) process at various oxygen partial pressures ranging from 6.6 x 10-3 Pascals (Pa) to 53 Pa. Crystal structure, transport and magnetic…

Materials Science · Physics 2007-05-23 Bakhtyar Ali , Abdul K Rumaiz , S. Ismat Shah , Arif Ozbay , Edmund R Nowak

We have investigated the growth of BaTiO3 thin films deposited on pure and 1% Nb-doped SrTiO3(001) single crystals using atomic oxygen assisted molecular beam epitaxy (AO-MBE) and dedicated Ba and Ti Knudsen cells. Thicknesses up to 30 nm…

Materials Science · Physics 2015-06-12 A. Barbier , C. Mocuta , D. Stanescu , P. Jegou , N. Jedrecy , H. Magnan

Precise control of the chemical valence or oxidation state of vanadium in vanadium oxide thin films is highly desirable for not only fundamental research, but also technological applications that utilize the subtle change in the physical…

Materials Science · Physics 2015-06-23 Shinbuhm Lee , Tricia L. Meyer , Sungkyun Park , Takeshi Egami , Ho Nyung Lee

The technological conditions of oxygen content variation in epitaxial La0.7Sr0.3MnO3-{\delta} films and the peculiarities of change of their transport characteristics were investigated. The films were grown onto single crystal SrTiO3…

(111)NiO epitaxial layers are grown on c-sapphire substrates by pulsed laser deposition (PLD) technique. Structural and morphological properties of the films are studied using in-plane as well as out-of-plane high resolution X-ray…

Materials Science · Physics 2021-05-26 Santosh Kumar Yadav , Subhabrata Dhar
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