DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2014 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MM: Fachverband Metall- und Materialphysik

MM 62: Topical session: X-ray and neutron scattering in materials science IV - High Energy Single Grain Diffraction

MM 62.4: Vortrag

Donnerstag, 3. April 2014, 18:30–18:45, BAR 205

Strain profile of magnetoelectric interfaces studied by X-ray diffraction methods — •Madjid Abes1, Christian Koops1, Stjepan Hrkac1, Adrian Petraru2, Hermann Kohlstedt2, Bridget Murphy1, and Olaf Magnussen11Institut für experimentelle und angewandte Physik, CAU Kiel, Germany — 2Institute of Electrical and Information Engineering Nanoelectronic, CAU Kiel, Germany

Understanding the coupling at the interface between piezoelectric (PE) and magnetostrictive (MS) components in magnetoelectric (ME) composites is essential for the optimization of these composites for sensor applications. A large ME response is only obtained if the lattice deformation induced by an external magnetic field in the MS material can be transferred efficiently to the PE material. To study the coupling at the buried ME composite interface we measured the lattice deformation in PbZr0.52Ti0.48O3 (PZT)/ CoFe2O4 (CFO) composites. These in situ grazing incidence [1] and high resolution X-ray diffraction were carried out in an applied magnetic or electric field. Surprisingly, the coupling between the components is not perfect for these epitaxial composite systems. We attribute to this to additional strain relaxation at grain boundaries reducing the strain transfer at the interface between the crystal lattices of both components. The authors thank the DFG SFB 855 for financial support.
[1] M. Abes et al., Appl. Phys. Lett., 102, 011601 (2013)

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2014 > Dresden