Search for dissertations about: "series magnetization"

Showing result 1 - 5 of 14 swedish dissertations containing the words series magnetization.

  1. 1. Design, Modelling and Control of Electrical Machines - With Applications to Iron-powder Machines and Acoustic Noise

    University dissertation from Department of Industrial Electrical Engineering and Automation, Lund Institute of Technology

    Author : David Martinez; Lunds universitet.; Lund University.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BEM; induction machine; noise prediction; vector control; acoustic noise; HEV; series magnetization; leakage reduction; thermal model; FEM; MEC; claw-poles; SMC; slip-ring-less machine; sound intensity measurements; vibration; Electrical engineering; Elektroteknik;

    Abstract : Popular Abstract in Swedish Avhandlingen består av två delar, den första som behandlar konstruktionen av järn-pulver maskiner, och den andra med analys av ljud från el-maskiner. I Del I, en elektrisk magnetiserad klo-pol synkron maskin på 1.6 kW har byggts. Maskinen är byggt från mjuk magnetisk material (SMC), också kallad järn-pulver. READ MORE

  2. 2. Ferromagnetic Resonance as a Probe of Magnetization Dynamics A Study of FeCo Thin Films and Trilayers

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Yajun Wei; Uppsala universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ferromagnetic resonance FMR ; Gilbert damping; magnetic coupling; FeCo;

    Abstract : The high frequency dynamic magnetic responses of FeCo thin films and structures have been investigated mainly using ferromagnetic resonance (FMR) technique.The FMR resonance condition and linewidth are first derived from the dynamic Landau- Lifshitz-Gilbert equation, followed by a study of the conversion between FMR field and frequency linewidths. READ MORE

  3. 3. Spin dependent transport in Co nano-scale tunnel junctions

    University dissertation from Stockholm : Fysik

    Author : Mattias Urech; KTH.; [2002]
    Keywords : ;

    Abstract : Ferromagnetic tunnel junctionshave been fabricated, measured and theoretically described. Anoverview of the Julliere model, and Slonczewski's model todescribe the resistance change due to di®erent orientationof the magnetization between the magnetic electrodes(magnetoresistance) is given. READ MORE

  4. 4. The Influence of Interlayer Exchange Coupling on Magnetic Ordering in Fe-based Heterostructures

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Martin Pärnaste; Uppsala universitet.; [2007]
    Keywords : Physics; magnetism; magnetic dimensionality; MOKE; magneto-optics; hydrogen loading; phase transitions; Fysik;

    Abstract : Temperature dependent magnetization measurements were conducted on Fe-based heterostructures. A linear increase of the magnetic critical temperature with increasing Fe thickness was found for Fe/V superlattices with strong interlayer exchange coupling. READ MORE

  5. 5. Collective properties of magnetic mesospins

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Erik Östman; Uppsala universitet.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; artificial spin ice; magnetic nano-structures; mesoscopic spin systems; mesospins; mixed spin dimensionalities; interaction modifier; engineering of energy landscape; emergence;

    Abstract : Mesoscopic spin systems consist of an ensemble of lithographically patterned nanomagnetic elements - mesospins. The interactions between the mesospins, can be designed at will by altering their lateral arrangement, enabling the study of collective magnetic order in a wide range of systems. READ MORE