Search for dissertations about: "application of MgO thin film"

Found 3 swedish dissertations containing the words application of MgO thin film.

  2. 1. Photoresponse of Patterned YBa2Cu3O7-x Thin Films

    Author : Martin Danerud; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The first object of this work was to develop YBa2Cu3O7-x (YBCO) thin films. Initially, Y, BaF2 and Cu were coevaporated with the substrate temperature (TS) 400 °C and the oxygen pressure (pO2) 5 x 10-5 mbar on SrTiO3 substrates with a subsequent high temperature annealing at 890 °C for 15 min in flowing wet oxygen. READ MORE

  4. 2. Development of Transmission Electron Microscopy Techniques for the Study of Thin Films

    Author : John P. McCaffrey; Bender Hugo; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Transmission electron microscopy (TEM) is an invaluable tool for the study of the physics and materials properties of thin films. This thesis addresses innovations and novel applications of TEM to materials physics, and consists of three parts: the examination and development of innovative TEM sample preparation techniques, conventional selected area electron diffraction with new techniques for data extraction, and an extended TEM investigation of quantum dots. READ MORE

  5. 3. Defect Induced Room-Temperature Ferromagnetism in ZnO and MgO Thin FIlms and Device Development

    Author : Mukes Kapilashrami; Lyuba Belova; E Dan Dahlberg; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Room-temperature ferromagnetism; intrinsic defects; un-balanced balanced magnetron sputtering; magnetic anisotropy and photoconductivity; Materials science; Teknisk materialvetenskap;

    Abstract : This thesis presents the discovery of defect induced room-temperature ferromagnetism in industrially important ZnO and MgO thin films, and establishes from a systematic study, in both ZnO and MgO films, the unique phenomenon of the sequences of transitions from ferromagnetism to para-, and eventually the well known diamagnetism of the bulk as a function of film thickness. Highly oriented and high quality dense thin films of ZnO and MgO have been deposited by reactive (balanced) magnetron sputtering under different ambience conditions and deposition temperatures. READ MORE