Blar i NTNU Open på forfatter "Bang, Ambjørn Dahle"

Viser treff 1-9 av 9

    • 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 ...

    • Effects of array shape and disk ellipticity in dipolar-coupled magnetic metamaterials 

      Slöetjes, Samuel Dingeman; Digernes, Einar; Strømberg, Anders; Olsen, Fredrik Kjemperud; Bang, Ambjørn Dahle; N'diaye, Alpha T; Chopdekar, Rajesh V.; Folven, Erik; Grepstad, Jostein (Peer reviewed; Journal article, 2021)
      Two-dimensional lattices of dipolar-coupled thin film ferromagnetic nanodisks give rise to emergent superferromagnetic (SFM) order when the spacing between dots becomes sufficiently small. In this paper, we define micron-sized ...

    • 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 ...

    • Exploring the Antiferromagnetic Spin Configuration in Complex Oxide Nanostructures 

      Bang, Ambjørn Dahle (Doctoral theses at NTNU;2020:58, Doctoral thesis, 2020)
      Improving energy efficiency is an urgent priority for the device technologies of tomorrow. To this end, introduction of spintronic devices where antiferromagnetic spins play an active role is a promising avenue, offering ...

    • Fabrication and Electronic Investigation of GaAs nanowire/Graphene Hybrid Devices 

      Bang, Ambjørn Dahle (Master thesis, 2014)
      In the present study, a process for fabricating GaAs nanowire/graphene hybrid devices using electron beam lithography processing techniques is presented and demonstrated. Fabricated devices were investigated electronically ...

    • Large Area Patterning of Embedded Magnetic Nanostructures in Complex Oxide Thin Films 

      Mellbye, Aksel Skauge (Master thesis, 2015)
      Complex oxide materials exhibit a wide range of functional properties, making them interesting for future use in electronic and spintronic devices. Through nanopatterning of thin film structures, magnetic shape effects can ...

    • 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 ...