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  • Books  (4)
  • FID-GEO-DE-7
  • Geoelektrik
  • Magnetismus
  • ddc:650
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  • 1
    Publication Date: 2023-12-21
    Description: This work presents approaches to extend limits of scanning probe microscopy techniques towards more versatile instruments using integrated sensor concepts. For structural surface analysis, magnetoresistive sensing is introduced and thermoresistive sensing is applied to study nanoscale phonon transport in chain-like molecules. Investigating with these techniques the properties of shape memory polymers, a fabrication method to design application-inspired micro- and nanostructures is introduced.
    Keywords: T1-995 ; Formgedächtnis ; Magnetoresistive ; Thermoresistive ; Leitfähigkeit ; Magnetismus ; TunnelwiderstandScanning Probe Microscopy ; Rasterkraftmikroskopie ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
    Language: English
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  • 2
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    Logos Verlag Berlin | Logos Verlag Berlin
    Publication Date: 2024-04-14
    Description: Magnetische Phänomene sind die Grundlage für eine Vielzahl technologischer Anwendungen und deshalb für unseren Alltag hochrelevant. Auch in der schulischen und universitären Lehre wird das Themenfeld Magnetismus traditionell berücksichtigt. Trotz der unbestrittenen Bedeutung dieses Inhaltsbereiches, weist der aktuelle fachdidaktische Forschungsstand auf Defizite der existierenden Vermittlungsansätze hin. Das Projekt Magnetismus hoch 4 strebt die Entwicklung eines neuartigen und anschlussfähigen Lehrkonzeptes zum Magnetismus an. Die Entwicklung des Lehrkonzeptes beinhaltet eine fachdidaktisch fundierte Sachstruktur, experimentelle Zugänge sowie digitale Medien und fokussiert in der vorliegenden Arbeit die Erscheinungsformen Diamagnetismus, Paramagnetismus und Ferromagnetismus als Lerninhalte der Hochschullehre. Im Sinne des Design-Based Research-Ansatzes erfolgt die konzeptionelle Erarbeitung des Designs zunächst auf Grundlage theoretischer und empirischer Befunde. Nachfolgend an die Entwicklungsarbeit sieht die Methode die praktische Erprobung der Inhalte mit ergänzenden empirischen Untersuchungen vor. Beide Phasen werden für das Projekt Magnetismus hoch 4 ebenfalls im Rahmen dieser Arbeit dargestellt.
    Keywords: Magnetismus ; Physik ; Didaktik ; Experimente ; Digitale Medien ; thema EDItEUR::Y Children’s, Teenage and Educational::YP Educational material::YPM Educational: Mathematics, science and technology, general::YPMP Educational: Sciences, general science
    Language: German
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  • 3
    Publication Date: 2024-04-04
    Description: In this work, magnetic atoms on surfaces are studied with low-temperature scanning tunneling microscopy. Motivated by the idea to use single atoms as magnetic bits, the factors that allow or prevent long-term stability of their magnetic moments are investigated. Lifetimes of up to several minutes can be achieved for the magnetic moments of holmium atoms on a Pt(111) surface, resulting from the combined symmetries of the system. Corresponding theoretical calculations are presented and evaluated.
    Keywords: QC1-999 ; Rastertunnelmikroskopie ; LebenszeitSTM Magnetic Adatom Spin Lifetime ; Spin ; Magnetismus ; Adatom ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: English
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  • 4
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    KIT Scientific Publishing
    Publication Date: 2024-04-04
    Description: In this book the electronic transport through rare-earth nanocontacts is investigated. These nanocontacts can be fabricated by the mechanically controlled break-junctions. The conductance through such a nanocontact is strongly influenced by the element's electronic structure. This is probably caused by the variable strength of localization of the 4f states.
    Keywords: QC1-999 ; Nanokontakte ; Seltene Erdenone-dimensional transport ; nanocontacts ; magnetism ; rare-earth elements ; Eindimensionaler Transport ; Magnetismus ; bic Book Industry Communication::P Mathematics & science::PH Physics ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: German
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