• Coexisting spin-flop coupling and exchange bias in LaFeO3/La0.7Sr0.3MnO3 heterostructures 

      Olsen, Fredrik Kjemperud; Hallsteinsen, Ingrid; Arenholtz, Elke; Tybell, Per Thomas Martin; Folven, Erik (Journal article; Peer reviewed, 2019)
      Exchange bias occurs in field-cooled antiferromagnet/ferromagnet systems and can most often be explained in terms of uncompensated magnetic moments at the interface that are pinned in their orientation during field cooling. ...
    • Crystalline symmetry controlled magnetic switching in epitaxial (111) La0.7Sr0.3MnO3 thin films 

      Hallsteinsen, Ingrid; Folven, Erik; Olsen, Fredrik Kjemperud; Chopdekar, R.V.; Rzchowski, M; Eom, C.B.; Grepstad, Jostein; Tybell, Per Thomas Martin (Journal article; Peer reviewed, 2015)
      Mixed-valence manganite thin films are attractive for spintronic devices. Crystalline orientation is a promising route to tailor switching mechanisms, as magnetization reversal depends on the magnetic anisotropy. Here, ...
    • Direct imaging of long-range ferromagnetic and antiferromagnetic order in a dipolar metamaterial 

      Digernes, Einar; Slöetjes, Samuel Dingeman; Strømberg, Anders; Bang, Ambjørn Dahle; Olsen, Fredrik Kjemperud; Arenholz, Elke; Chopdekar, Rajesh V.; Grepstad, Jostein; Folven, Erik (Journal article, 2020)
      Magnetic metamaterials such as artificial spin ice offer a route to tailor magnetic properties. Such materials can be fabricated by lithographically defining arrays of nanoscale magnetic islands. The magnetostatic interactions ...
    • Enhanced magnetic signal along edges of embedded epitaxial La0.7Sr0.3MnO3 nanostructures 

      Olsen, Fredrik Kjemperud; Bang, Ambjørn Dahle; Digernes, Einar; Slöetjes, Samuel Dingeman; Andreas, Scholl; Chopdekar, Rajesh V.; Tybell, Per Thomas Martin; Grepstad, Jostein; Folven, Erik (Peer reviewed; Journal article, 2020)
      When thin films are patterned to realize nanoscale device geometries, maintaining their structural integrity is key to the quality of their functional properties. The introduction of new surfaces and interfaces by lateral ...
    • Interplay between bulk and edge-bound topological defects in a square micromagnet 

      Slöetjes, Samuel Dingeman; Digernes, Einar; Olsen, Fredrik Kjemperud; Chopdekar, Rajesh V.; Retterer, Scott T.; Folven, Erik; Grepstad, Jostein (Journal article; Peer reviewed, 2018)
      A field-driven transformation of a domain pattern in a square micromagnet, defined in a thin film of La0.7Sr0.3MnO3, is discussed in terms of creation and annihilation of bulk vortices and edge-bound topological defects ...
    • Karakterisering av magnetiske egenskaper til (111)-orienterte funksjonelle grensesjikt basert på komplekse oksider 

      Olsen, Fredrik Kjemperud (Master thesis, 2015)
      Grenseflater i funksjonelle materialer er et voksende forskningsfelt med lovende utsikter for anvendelse i elektronikk. Oksidmaterialer utgjør et bredt spekter av funksjonelle egenskaper som gjør dem spesielt interessante ...
    • Magnetic domain formation in ultrathin complex oxide ferromagnetic/antiferromagnetic bilayers 

      Bang, Ambjørn Dahle; Olsen, Fredrik Kjemperud; Slöetjes, Samuel Dingeman; Scholl, Andreas; Retterer, Scott T.; Vaz, Carlos; Tybell, Per Thomas Martin; Folven, Erik; Grepstad, Jostein (Journal article; Peer reviewed, 2018)
      In this study, we report on the magnetic domain formation in ultrathin blanket films and patterned micro- and nanostructures of ferromagnetic (FM) La0.7Sr0.3MnO3 single-layers and antiferromagnetic (AF)/ferromagnetic ...
    • Neel vector reorientation in ferromagnetic/antiferromagnetic complex oxide nanostructures 

      Bang, Ambjørn Dahle; Hallsteinsen, Ingrid; Olsen, Fredrik Kjemperud; Slöetjes, Samuel Dingeman; Retterer, Scott T; Scholl, Andreas; Arenholz, Elke; Folven, Erik; Grepstad, Jostein (Journal article; Peer reviewed, 2019)
      In this study, we report on a temperature-driven antiferromagnetic (AF) spin reorientation transition in micro- and nanostructures of AF/ferromagnetic (FM) LaFeO3/La0.7Sr0.3MnO3 thin film bilayers. Using a combination of ...
    • 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 ...