Strong uniaxial in-plane magnetic anisotropy of (001)- and (011)-oriented La0.67Sr0.33MnO3 thin films on NdGaO3 substrates

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Boschker, H. and Mathews, M. and Houwman, E.P. and Nishikawa, H. and Vailionis, A. and Koster, G. and Rijnders, G. and Blank, D.H.A. (2009) Strong uniaxial in-plane magnetic anisotropy of (001)- and (011)-oriented La0.67Sr0.33MnO3 thin films on NdGaO3 substrates. Physical Review B: Condensed matter and materials physics, 79 (21). p. 214425. ISSN 1098-0121

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Abstract:Epitaxial La0.67Sr0.33MnO3 (LSMO) ferromagnetic thin films were coherently grown on NdGaO3 (NGO) substrates with different crystal orientations of the surface plane. On the (110)o- and (001)o-oriented substrates, the film grows in the (001)pc orientation, and on the (100)o-, (010)o-, and (112)o-oriented substrates the film is (011)pc oriented (we will use subindices o and pc for the orthorhombic and pseudocubic crystal structures, respectively). The lattice parameters and pseudocube angles of the deformed LSMO pseudocube have been determined from x-ray diffraction measurements. The in-plane magnetic easy and hard directions of these films have been determined from the dependence of the remnant magnetization on the angle of the in-plane applied field. For all substrate orientations there is a strong in-plane uniaxial magnetic anisotropy, determined by the crystal directions of the substrate surface. The easy and hard magnetic-anisotropy directions are explained consistently by the (bulk) inverse magnetostriction model, except for the film on NGO (112)o.
Item Type:Article
Copyright:© 2009 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/72426
Official URL:http://dx.doi.org/10.1103/PhysRevB.79.214425
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