Sökning: "magnetocaloric effect"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden magnetocaloric effect.

  1. 1. The Magnetocaloric Effect in Antiferromagnetic and Noncollinear Magnets

    Master-uppsats, Uppsala universitet/Materialteori

    Författare :Siri Alva Berge; [2023]
    Nyckelord :magnetocaloric effect; atomistic spin dynamics; monte carlo; antiferromagnet; neodymium; noncollinear magnetism;

    Sammanfattning : The magnetocaloric effect (MCE) is the temperature change in a magnetic material due to a change in an applied magnetic field. How the MCE behaves in different magnetic materials and at different phase transitions is fundamental to understand. LÄS MER

  3. 2. Internal strain in the magnetocaloric alloy MnCoSi

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Olivia Vaerst; [2021]
    Nyckelord :MnCoSi; Magnetocaloric Effect; Arc Melting; Strain; X-Ray Diffraction; Williamson-Hall; Rietveld Refinement; Physics and Astronomy;

    Sammanfattning : Cooling systems based on magnetic refrigeration are a promising and environmentally friendly alternative to commonly used gas-compression refrigeration. Magnetic refrigeration is based on the magnetocaloric effect. LÄS MER

  4. 3. Quantum statistics and the magnetocaloric effect

    Kandidat-uppsats, Uppsala universitet/Materialteori

    Författare :Anna Sandberg; [2020]
    Nyckelord :quantum statistics; magnetocaloric effect; magnetocaloric; magnetic cooling; simulation;

    Sammanfattning : Caloric materials show prospect in replacing the function of vaporcompression systems in todays cooling devices, resulting in more energy efficient cooling and eliminating the need for refrigerents which contribute to climate change. This project has focused on magnetocaloric materials, which experience changes in temperature when exposed to magnetic fields. LÄS MER

  5. 4. Tuning the Curie temperature and phase fraction of FeNi25-based alloys with Mn and Co for magnetocaloric applications

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Marie Sanglé-Ferrière; [2020]
    Nyckelord :Thesis; magnetocaloric effect; Curie temperature; FCC; FeNi25; Avhandling; magnetokalorisk effekt; Curie-temperatur; FCC; FeNi25;

    Sammanfattning : This paper discusses the search of an FeNi25-based alloy with a face-centered cubic crystal structure exhibiting a Curie point around room temperature, for magnetocaloric applications. Fe was substituted in various amounts with FCC-stabilising elements Mn and Co as these elements respectively decrease and increase the Curie Temperature, thus enabling to tune the Curie point. LÄS MER

  7. 5. Setup Implementation for a Direct Measurement Technique of the Magnetocaloric Effect

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Ferdinand Posva; [2020]
    Nyckelord :Magnetocaloric effect; Direct method; Gadolinium; High entropy alloys;

    Sammanfattning : This project presents an attempt to construct a setup and implement a reliable technique for measuring the magnetocaloric effect (MCE) on various materials via a direct method for the acquisition of the data. The main objective of the latter is to produce a ∆Tadiabatic vs T graph over a reasonable temperature span (-100◦C up to 220◦C) by thermal monitoring of a magnetic material exposed to an oscillating magnetic field with a maximum strength of 1. LÄS MER