Sökning: "spin change"

Visar resultat 1 - 5 av 61 avhandlingar innehållade orden spin change.

  1. 1. Magnetic materials with tunable thermal, electrical, and dynamic properties An experimental study of magnetocaloric, multiferroic, and spin-glass materials

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Matthias Hudl; Uppsala universitet.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Magnetocalorics; multiferroics; spin glasses; magnetization; polarization; spin-dimensionality; Solid State Physics; Fasta tillståndets fysik;

    Sammanfattning : This thesis concerns and combines the results of experimental studies of magnetocaloric, multiferroic and spin-glass materials, using SQUID magnetometry as the main characteriza-tion technique. The magnetocaloric effect offers an interesting new technology for cooling and heating applications. LÄS MER

  2. 2. Managing sponsored spin-offs from large firms

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Martin Wallin; [2005]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; initial public offering IPO ; corporate venturing; industrial growth and change; resource-based theory; sponsored spin-off; Sweden;

    Sammanfattning : .... LÄS MER

  3. 3. Innovation outside: When spin-off firms and developer communities change the boundaries of the firm

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Martin Wallin; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; free and open source software; external venturing; organization of innovation; spin-off; Sweden; developer communities; resource-based theory of the firm; innovation outside; open innovation;

    Sammanfattning : Few observers dispute that innovation is at the very heart of economic development and prosperity and a key determinant for the competitiveness of firms. Yet the literature has found it challenging to incorporate the boundary-spanning characteristic of innovation into the theory of the firm. LÄS MER

  4. 4. Metal-Organic Complexes at Surfaces

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Cristina Isvoranu; Lunds universitet.; Lund University.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; x-ray absorption spectroscopy; x-ray photoelectron spectroscopy; bi-isonicotinic acid; oxalic acid; spin change; gas adsorption; metal-organic complex; iron phthalocyanine; scanning tunneling spectroscopy; resonant photoemission spectroscopy;

    Sammanfattning : The adsorption of different metal-organic complexes at surfaces was investigated by spectroscopic techniques (x-ray photoemission spectroscopy, x-ray absorption spectroscopy, resonant photoemission spectroscopy) and by scanning tunnelling microscopy. The investigation methods are able to provide atomic scale information on the studied systems, which moreover originates from the top-most atomic layers in a sample, meaning that they are surface sensitive techniques. LÄS MER

  5. 5. Spin momentum transfer effects for spintronic device applications

    Detta är en avhandling från Stockholm : KTH

    Författare :Yan Zhou; KTH.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spin Torque Oscillator; Giant Magnetoresistance; Tunneling Magnetoresistance; NATURAL SCIENCES Physics Condensed matter physics Magnetism; NATURVETENSKAP Fysik Kondenserade materiens fysik Magnetism;

    Sammanfattning : The recent discovery that a spin-polarized current can exert a large torque on a ferromagnet, through direct transfer of spin angular momentum, offers the possibility of electrical current controlled manipulation of magnetic moment in nanoscale magnetic device structures. This so-called spin torque effect holds great promise for two applications, namely, spin torque oscillators (STOs) for wireless communication and radar communication, and spin transfer torque RAM (STT-RAM) for data/information storage. LÄS MER