Blar i NTNU Open på forfatter "Grepstad, Jostein"

Viser treff 21-24 av 24

    • Shape-imposed anisotropy in antiferromagnetic complex oxide nanostructures 

      Bang, Ambjørn Dahle; Hallsteinsen, Ingrid; Chopdekar, Rajesh V.; Olsen, Fredrik Kjemperud; Slöetjes, Samuel Dingeman; Kjærnes, Kristoffer; Arenholz, Elke; Folven, Erik; Grepstad, Jostein (Journal article; Peer reviewed, 2019)
      In this study, we report on a shape-imposed magnetic anisotropy in micro- and nanostructures defined in antiferromagnetic (AF) LaFeO3 (LFO) thin films. Two distinct types of structures are investigated: embedded magnets ...

    • Tailoring the magnetic order in a supermagnetic metamaterial 

      Slöetjes, Samuel Dingeman; Urdahl, Hans Henrik; Grepstad, Jostein; Folven, Erik (Journal article; Peer reviewed, 2017)
      The emergent magnetism in close-packed assemblies of interacting superparamagnetic particles is commonly referred to as supermagnetism. The magnetic characteristics of such systems are determined by the dipolar coupling ...

    • Temperature and Orientation Dependent Exchange Coupling in Epitaxial Oxide Micromagnets 

      Lee, Michael S.; Wynn, Thomas A.; Folven, Erik; Chopdekar, Rajesh V.; Scholl, Andreas; Retterer, Scott; Grepstad, Jostein; Takamura, Yayoi (Journal article; Peer reviewed, 2017)
      Soft x-ray photoemission electron microscopy with an in situ magnetic field has been used to study the relationship between ferromagnetic and antiferromagnetic spin alignment and the switching/reversal field of epitaxial ...

    • Topological Defects and Dipolar Magnetism in Magnetic Nanostructures 

      Slöetjes, Samuel Dingeman (Doctoral theses at NTNU;2020:69, Doctoral thesis, 2020)
      In this work, magnetism in micro- and nanoscale magnetic structures has been explored. We focus on two different topics, topological defects and dipolar magnetism. As a model system for the study of interacting topological ...