Browsing NTNU Open by Author "Kjærnes, Kristoffer"
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Fabrication of Multiferroic Tunnel Junctions on (111)-oriented SrTiO3
Kjærnes, Kristoffer (Master thesis, 2016)The phenomenon of quantum mechanical electron tunneling is widely used in device technology, of which magnetic tunnel junctions (MTJ) have been important for many years and ferroelectric tunnel junctions (FTJ) are becoming ... -
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 ... -
Synthesis and characterization of (111)-oriented BaTiO3 thin films
Bolstad, Torstein; Kjærnes, Kristoffer; Raa, Kristoffer S.; Takahashi, Ryota; Lippmaa, Mikk; Tybell, Per Thomas Martin (Journal article; Peer reviewed, 2019)The synthesis of (111)-oriented BaTiO3 thin films on Nb-doped SrTiO3 and bilayers of BaTiO3 and La0.7Sr0.3MnO3 on SrTiO3 are investigated. With increasing thickness the films are found to exhibit a decreasing out-of-plane ... -
The role of antiferromagnetic spin axis on magnetic reconstructions at the (111)-oriented La0.7Sr0.3MnO3/ LaFeO3 interface
Hallsteinsen, Ingrid; Grutter, Alexander; Moreau, Magnus; Slöetjes, Samuel Dingeman; Kjærnes, Kristoffer; Arenholz, elke; Tybell, Per Thomas Martin (Journal article; Peer reviewed, 2018)Engineering of emergent properties at oxide interfaces is an exciting route towards realizing oxide electronics. Such properties are often the result of a balance between cooperating and competing mechanisms in the materials ... -
Uniaxial Néel vector control in perovskite oxide thin films by anisotropic strain engineering
Kjærnes, Kristoffer; Hallsteinsen, Ingrid; Chopdekar, R. V.; Moreau, Magnus; Bolstad, Torstein; Svenum, Ingeborg-Helene; Selbach, Sverre Magnus; Tybell, Per Thomas Martin (Peer reviewed; Journal article, 2021)Antiferromagnetic (AF) thin films typically exhibit a multidomain state, and control of the AF Néel vector is challenging, as AF materials are robust to magnetic perturbations. In this paper, uniaxial Néel vector control ...