Dresden 2014 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 64: Topical session: X-ray and neutron scattering in materials science V - X-ray Nanodiffraction Characterization of Inhomogeneous Structural and Mechanical Properties of Thin Films

MM 64.2: Vortrag

Freitag, 4. April 2014, 10:45–11:00, BAR 205

Local strain and magnetization studies in single magnetoelectric microcomposites — •Stjepan Hrkac¹, Madjid Abes¹, Christian Koops¹, Christina Krywka^2,3, Martin Müller^1,2,3, Jeffrey McCord⁴, Sören Kaps⁴, Yogendra Mishra⁴, Rainer Adelung⁴, Manfred Burghammer⁵, Olaf Magnussen^1,3, and Bridget Murphy^1,3 — ¹Institute for Experimental and Applied Physics, University of Kiel, Germany — ²Institute of Materials Research, Helmholtz Zentrum Geesthacht, Germany — ³Ruprecht Haensel Laboratory, University of Kiel, Germany — ⁴Institute for Materials Science, University of Kiel, Germany — ⁵European Synchrotron Radiation Facility, Grenoble, France

Magnetoelectric microcomposites are of interest for novel sensor application. We combine magneto-optic Kerr effect microscopy and nanofocus X-ray diffraction to map the local properties of ZnO microrods coated with an amorphous (Fe₉₀Co₁₀)₇₈Si₁₂B₁₀ layer. We follow the magnetic domain behavior and lattice deformation upon applying an external magnetic field. In addition to the expected field induced strain, we observe a local magnetic induced strain in the 10⁻⁵ range in the ZnO localized near the (Fe₉₀Co₁₀)₇₈Si₁₂B₁₀ /ZnO interface ¹. Financial support via the German Science Foundation (DFG) SFB 855 is acknowledged.
¹ S.B. Hrkac, M. Abes, C. T. Koops, C. Krywka, M. Müller, S. Kaps, R. Adelung, J. McCord, E. Lage, E. Quandt, O. M. Magnussen, and B. M. Murphy, Applied Physics Letters 103, 123111 (2013)