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Nanolabyrinthine ZrAlN thin films by self-organization of interwoven single-crystal cubic and hexagonal phases
Linköping University, Department of Physics, Chemistry and Biology, Nanostructured Materials. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.
FEI Company, Eindhoven, The Netherlands.
École Polytechnique de Montréal, Canada.
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2013 (English)In: APL Materials, ISSN 2166-532X, Vol. 1, no 2, 022105-1-022105-6 p.Article in journal (Refereed) Published
Abstract [en]

Self-organization on the nanometer scale is a trend in materials research. Thermodynamic driving forces may, for example, yield chessboard patterns in metal alloys[Y. Ni and A. G. Khachaturyan, Nature Mater. 8, 410–414 (2009)] or nitrides [P. H.Mayrhofer, A. Horling, L. Karlsson, J. Sj ¨ ol¨ en, T. Larsson, and C. Mitterer, Appl. ´Phys. Lett. 83, 2049 (2003)] during spinodal decomposition. Here, we explore theZrN-AlN system, which has one of the largest positive enthalpies of mixing amongthe transition metal aluminum nitrides [D. Holec, R. Rachbauer, L. Chen, L. Wang,D. Luefa, and P. H. Mayrhofer, Surf. Coat. Technol. 206, 1698–1704 (2011); B.Alling, A. Karimi, and I. Abrikosov, Surf. Coat. Technol. 203, 883–886 (2008)].Surprisingly, a highly regular superhard (36 GPa) two-dimensional nanolabyrinthinestructure of two intergrown single crystal phases evolves during magnetron sputter thin film synthesis of Zr0.64Al0.36N/MgO(001). The self-organization is surfacedriven and the synergistic result of kinetic limitations, where the enthalpy reductionbalances both investments in interfacial and elastic energies.

Place, publisher, year, edition, pages
New York, USA: American Institute of Physics (AIP), 2013. Vol. 1, no 2, 022105-1-022105-6 p.
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-96015DOI: 10.1063/1.4818170ISI: 000332272800009OAI: oai:DiVA.org:liu-96015DiVA: diva2:640277
Available from: 2013-08-13 Created: 2013-08-13 Last updated: 2016-08-31Bibliographically approved

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Ghafoor, NaureenJohnson, LarsPetrov, IvanHultman, LarsOdén, Magnus

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