Regensburg 2010 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 26: Poster Session

MM 26.56: Poster

Dienstag, 23. März 2010, 14:45–16:30, Poster C

Vapour phase deposition of ceramic-based granular nanocomposites for magnetoelectric applications — •Björn Gojdka, Vladimir Zaporojtchenko, Thomas Strunskus, and Franz Faupel — University of Kiel, Institute for Materials Science, Kaiserstraße 2, 24143 Kiel

The investigation of magnetoelectric materials has experienced a renaissance during the last decade due to promising new theoretical and experimental results and the technical potential of such materials [1]. However, up to now investigations of magnetoelectric granular nanocomposites, in which magnetostrictive clusters are embedded in a piezoelectric matrix, are scarce [2].

We report on the fabrication of granular magnetoelectric nanocomposites via combined rf and DC magnetron sputtering. Quasi-laminar systems, consisting of alternating layers of piezoelectric ceramic and layers of percolated magnetostrictive clusters were fabricated by tandem-sputtering. The deposition by co-sputtering of a BaTiO3 ferroelectric matrix containing clusters of Co on single-crystal SrTiO3 substrate was studied.

The structure was characterized by XRD. For the analysis of the composition and morphology of the composites TEM and SEM/EDX were utilized.

[1] C.W. Nan et al., Journal of Applied Physics 103, 031101 (2008)

[2] J. H. Park et al, Applied Physics Letters 92, 062908 (2008)