Search for dissertations about: "spin change"

Showing result 1 - 5 of 79 swedish dissertations containing the words spin change.

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

    Author : Matthias Hudl; Per Nordblad; DD Sarma; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Magnetocalorics; multiferroics; spin glasses; magnetization; polarization; spin-dimensionality; Fasta tillståndets fysik; Solid State Physics;

    Abstract : 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. READ MORE

  4. 2. Spin Vortices, Interlayer Exchange, and Magnetocalorics in Multilayers

    Author : Milton Persson; Vladislav Korenivski; David B. Haviland; Coriolan Tiusan; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spin vortex pairs; bimerons; RKKY; finite size effects; nanostructure magnetocalorics; atomistic spin dynamics; nanocalorimetry; Spinvirvelpar; bimeron; RKKY; finita storlekseffekter; magnetkalorimetri i nanostrukturer; atomistisk spindynamik; nanokalorimetri; Material and Nano Physics; Material- och nanofysik;

    Abstract : In this thesis we study strongly coupled pairs of spin vortices, in a configurationsuch that the cores attract while external fields act to pull them apart, with potential applications in magnetic random access memory (MRAM) and oscillators.Inertial decoupling of the cores has been studied and can be achieved with weak nanosecond pulses by the help of anharmonicity. READ MORE

  5. 3. Managing sponsored spin-offs from large firms

    Author : Martin Wallin; Chalmers tekniska högskola; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; initial public offering IPO ; corporate venturing; industrial growth and change; resource-based theory; sponsored spin-off; Sweden;

    Abstract : .... READ MORE

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

    Author : Martin Wallin; Chalmers tekniska högskola; []
    Keywords : 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;

    Abstract : 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. READ MORE

  7. 5. Metal-Organic Complexes at Surfaces

    Author : Cristina Isvoranu; Synkrotronljusfysik; []
    Keywords : 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;

    Abstract : 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. READ MORE