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RESEARCH PRODUCT

Preparation of thin films of the heavy fermion superconductor UNi2Al3

Martin JourdanH. AdrianMichael FoersterA. Zakharov

subject

SuperconductivityMaterials scienceCondensed matter physicsStrain (chemistry)ImpurityHexagonal crystal systemHeavy fermion superconductorThin filmCondensed Matter PhysicsEpitaxyElectronic Optical and Magnetic Materials

description

Abstract Thin films of the heavy fermion superconductor UNi 2 Al 3 were prepared by coevaporation of the elementary components in an MBE-system. We obtained textured (1 0 0)-oriented films of this hexagonal compound depositing on Al 2 O 3 substrates. Epitaxial growth was observed on (1 1 2)-oriented orthorhombical YAlO 3 substrates. However, due to pronounced strain the UNi 2 Al 3 (1 0 0)-axis is shortened by ≈2%. No superconductivity of the films was observed which can be associated with the high impurity concentration deduced from R ( T ) and XRD investigations.

yearjournalcountryeditionlanguage
2004-05-01Journal of Magnetism and Magnetic Materials
https://doi.org/10.1016/j.jmmm.2003.11.095