Search for dissertations about: "FERROELECTRIC FILM"

Showing result 1 - 5 of 27 swedish dissertations containing the words FERROELECTRIC FILM.

  1. 1. Ferroelectric Thin Films on Si-substrate for Tunable Microwave Applications

    Author : Saeed Abadei; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase shifter; BaxSr1-xTiO3; Tunable microwave device; Ferroelectric Varactor; Paraelectric; Filter; Na0.5K0.5NbO3; Integrated ferroelectric device; SrTiO3; Ferroelectric;

    Abstract : The thesis presents the development of microwave tunable devices based onferroelectric thin films. The main tasks in this work are the fabrication, optimization, andintegration of ferroelectric thin film into Si-MMIC. READ MORE

  2. 2. Processing and Properties of Ferroelectric Ag(Ta,Nb)O3 Thin Films

    Author : Jung-Hyuk Koh; KTH; []
    Keywords : Ferroelectric; Thin Film; PLD; Tunable device;

    Abstract : High tunability and low loss tangent of ferroelectric thinfilms offer unique opportunity for the development of variousmicrowave devices. Silver tantalate niobate, which showsexcellent microwave properties, was selected for this study. READ MORE

  3. 3. Piezoelectric and ferroelectric device technologies for microwave oscillators

    Author : Martin Norling; Chalmers University of Technology; []
    Keywords : piezoelectrics; electrostrictive materials; microwave oscillators; thin film devices; ferroelectrics; thin film bulk acoustic resonators; ferroelectric varactors;

    Abstract : The purpose of this thesis is to investigate piezoelectric and ferroelectric thin film device technologies for application in microwave oscillators.Thin film varactors based on ferroelectric materials are considered. READ MORE

  4. 4. Ferroelectric Na0.5K0.5NbO3 Thin Films : Processing, Physical Properties and Applications

    Author : Choong-Rae Cho; KTH; []
    Keywords : Ferroelectric thin film; Pulsed Laser Deposition;

    Abstract : This thesis presents the results on the fabrication offerroelectric Na0.5K0.5NbO3(NKN) thin films by pulsed laser deposition (PLD)technique, comprehensive characterization of film properties,and various applications of NKN films. READ MORE

  5. 5. Chiral Liquid Crystalline Side-Chain Polymers. Design, Synthesis and Properties

    Author : Magnus Svensson; Chalmers University of Technology; []
    Keywords : lateral substituent; electro-optic; ferroelectric; molar mass; polymer; side-group; thin film; polysiloxane;

    Abstract : The potential use of chiral liquid crystalline materials, low molar mass as well as polymers, in technical applications has been recognized for some decades now. A number of interesting phenomena based on the spontaneous ordering of the liquid crystal forming molecules are strong reasons for the research effort in this area. READ MORE