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BiFeO3 thin films are deposited on FTO coated glass substrates using a simple sol-gel deposition technique, limiting thickness about 70 nm and Ag/BiFeO3/FTO RRAM devices are prepared. The devices showed low-voltage bipolar switching with…

材料科学 · 物理学 2018-06-13 Chandni Kumari , Ishan Varun , Shree Prakash Tiwari , Ambesh Dixit

Copper ferrite thin films were deposited on amorphous quartz substrates. The as deposited films were annealed in air and either quenched or slow cooled. Magnetization studies were carried out on the as deposited as well as annealed films…

We have investigated the electrical transport properties of 8 nm thick La0.67Ca0.33MnO3 films, sputter-deposited on SrTiO3 (STO), and etched into 5 micrometer-wide bridges by Ar-ion etching. We find that even slight overetching of the film…

材料科学 · 物理学 2009-11-13 C. Beekman , I. Komissarov , M. Hesselberth , J. Aarts

We investigate the effect of annealing temperature on the crystalline structure and physical properties of tantalum-pentoxide films grown by radio frequency magnetron sputtering. For this purpose, several tantalum films were deposited and…

We present low temperature electrical transport experiments in five field effect transistor devices consisting of monolayer, bilayer and trilayer MoS2 films, mechanically exfoliated onto Si/SiO2 substrate. Our experiments reveal that the…

介观与纳米尺度物理 · 物理学 2014-03-14 Subhamoy Ghatak , Atindra Nath Pal , Arindam Ghosh

The ultra-wide bandgap, high breakdown electric field, and large-area affordable substrates make \b{eta}-Ga2O3 promising for applications of next-generation power electronics while its thermal conductivity is at least one order of magnitude…

We systematically study the structures and electrical transport properties of a series of Sn-doped indium oxide (ITO) films with thickness $t$ ranging from $\sim$5 to $\sim$53\,nm. Scanning electron microscopy and x-ray diffraction results…

介观与纳米尺度物理 · 物理学 2015-03-30 Yu-Jie Zhang , Kuang-Hong Gao , Zhi-Qing Li

The two-dimensional electron gas (2DEG) at oxides interfaces and surfaces has attracted large attention in physics and research due to its unique electronic properties and possible application in optoelectronics and nanoelectronics. The…

材料科学 · 物理学 2018-08-29 F. Alarab , J. Minar , P. Sutta , L. Prusakova , R. Medlın , O. Heckmann , C. Richter , K. Hricovini

Zinc-iridium oxide (Zn-Ir-O) thin films have been demonstrated as a p-type conducting material. However, the stability of p-type conductivity with respect to chemical composition or temperature is still unclear. In this study we discuss the…

We present a study of the thickness dependence of magnetism and electrical conductivity in ultra thin La0.67Sr0.33MnO3 films grown on SrTiO3 (110) substrates. We found a critical thickness of 10 unit cells below which the conductivity of…

4d transition metal perovskite oxides serve as suitable testbeds for the study of strongly correlated metallic properties. Among these, $SrMoO_{3}$ (SMO) exhibits remarkable electrical conductivity at room temperature. The…

It is shown that the conductance relaxations observed in electrical field effect measurements on granular Al films are the sum of two contributions. One is sensitive to gate voltage changes and gives the already reported anomalous…

无序系统与神经网络 · 物理学 2011-06-17 Julien Delahaye , Jean Honoré , Thierry Grenet

(Ba0.6Sr0.4)(Zr0.3Ti0.7)O3 thin films were grown on IrO2 and Pt coated Si substrates. Film on Pt electrode showed large dielectric dispersion at lower frequency and on other hand film on IrO2 showed dielectric constant almost independent…

材料科学 · 物理学 2010-04-19 Y. K. Vayunandana Reddy , Jerome Wolfman , Monique Gervais , Francois Gervais

The temperature dependent Hall mobility data from La-doped SrTiO3 thin films has been analyzed and modeled considering various electron scattering mechanisms. We find that a ~6 meV transverse optical phonon (TO) deformation potential…

介观与纳米尺度物理 · 物理学 2015-06-19 Amit Verma , Adam P. Kajdos , Tyler A. Cain , Susanne Stemmer , Debdeep Jena

This paper presents high-temperature ferroelectric characterization of 40~nm Al$_{1-x-y}$B$_x$Sc$_y$N (AlBScN) thin film capacitors grown by co-sputtering Al$_{0.89}$B$_{0.11}$ and Sc targets onto Pt(111)/Ti(002)/Si(100) substrates.…

V2O3 thin films about 10 nm thick were grown on Al2O3 (0001) by pulsed laser deposition. The XRD analysis is in agreement with R-3c space group. Some of them exhibit the metal / insulator transition characteristic of V2O3 bulk material and…

强关联电子 · 物理学 2009-11-11 S. Autier-Laurent , B. Mercey , D. Chippaux , P. Limelette , Ch. Simon

We report the low temperature growth of vertically aligned ZnO nanocolumns on Si substrates by using reactive radio frequency magnetron sputtering.High sputtering pressure combined with low substrate temperatures induce a pronounced self…

We have measured the low-field magnetoresistances (MRs) of a series of Sn-doped indium oxide thick films in the temperature $T$ range 4--35 K. The electron dephasing rate $1/\tau_{\varphi}$ as a function of $T$ for each film was extracted…

介观与纳米尺度物理 · 物理学 2013-09-10 Yu-Jie Zhang , Zhi-Qing Li , Juhn-Jong Lin

Thin films of the high-temperature superconductor HgBa$_2$CaCu$_2$O$_{6+\delta}$ have been prepared on SrTiO$_3$ substrates by pulsed-laser deposition of precursor films and subsequent annealing in mercury-vapor atmosphere. The…

超导电性 · 物理学 2021-02-11 H. Richter , W. Lang , M. Peruzzi , H. Hattmansdorfer , J. H. Durrell , J. D. Pedarnig

We investigated structural, magnetic and electrical properties of sputter deposited Mn-Fe-Ga compounds. The crystallinity of the Mn-Fe-Ga thin films was confirmed using x-ray diffraction. X-ray reflection and atomic force microscopy…