Search for dissertations about: "ULTRATHIN FILMS"

Showing result 1 - 5 of 26 swedish dissertations containing the words ULTRATHIN FILMS.

  2. 1. Synthesis and In Situ ToF-LEIS Analysis of Ultrathin Silicides and Ti-based Films

    Author : Philipp Mika Wolf; Daniel Primetzhofer; Zhen Zhang; Eduardo Pitthan; Tuan Thien Tran; Anders Hallén; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ion scattering; in situ characterization; nickel silicide; ultrathin metal silicide; epitaxial silicide; surface analysis; titanium based films; high-resolution depth profiling;

    Abstract : Thin films and coatings play a significant role in today’s society, with applications in electronics, optics, mechanics, and biomedicine. Further advancement in the field of surface coatings requires a good understanding of the unique features of ultrathin films and surfaces, which can only be reached with analysis techniques capable of resolving composition and morphology on a sub-nm scale. READ MORE

  4. 2. Reshaping the phase diagram of YBa2Cu3O7-δ through strain in ultrathin films and nanowires

    Author : Eric Wahlberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; phase-slip; strange metal; High-Tc superconductors; thin-films; underdoped; nanowires; YBCO; charge density wave;

    Abstract : This thesis aims at adding important pieces to the puzzle of understanding the physics of the High critical Temperature Superconductor (HTS) cuprates, where despite over 30 years of intense research many open questions remain. The HTS cuprates are characterized by an incredibly complex phase diagram with multiple intertwined local orders, such as charge density waves (CDW). READ MORE

  5. 3. Processing and Properties of Ultrathin Perovskite Manganites

    Author : Peter Johnsson; KTH; []
    Keywords : colossal magnetoresistance; thin films; thickness dependence;

    Abstract : .... READ MORE

  6. 4. Titania Nanoscale Films and Surfaces : Surface Science Investigation of Structure and Properties

    Author : Davide Ragazzon; Anders Sandell; Anne Borg; Jason F. Weaver; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Photoelectron spectroscopy; PES; XPS; scanning tunneling microscopy; STM; titania; titanium oxide; TiO2; Au 111 ; gold; water; H2O; rutile;

    Abstract : This thesis presents surface science studies, investigating several aspects of titanium dioxide at the atomic scale. The greater part of this work is devoted to the preparation by chemical vapor deposition (CVD) of titanium(IV) tetraisopropoxide (TTIP) of ultrathin TiO2 or TiOx films on Au(111). READ MORE

  7. 5. YBCO nanowires to study nanoscale ordering in High-Tc Superconductors

    Author : Riccardo Arpaia; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; nanoscale ordering; nanoSQUIDs; nanowires; High-Tc superconductors; ultrathin films; oxygen doping; nanowire-based single photon detectors;

    Abstract : We present the realization of YBa2Cu3O7-δ (YBCO) nanowires for both basic physics studies, which could help to elucidate the microscopic mechanisms of High critical Temperature Superconductors (HTS), and for novel applications.The first part of the thesis describes an improved nanopatterning procedure, based on e-beam lithography in combination with an amorphous carbon mask and a very gentle Ar+ ion etching. READ MORE