DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2013 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

MA: Fachverband Magnetismus

MA 16: Poster I

MA 16.7: Poster

Tuesday, March 12, 2013, 10:30–13:30, Poster D

Localized magnetoelectric effect in BaTiO3/Hexaferrite composite ceramics — •Harsh Trivedi1, Vladimir Shvartsman1, Doru Lupascu1, Rob Pullar2, and Andrei Kholkin21Institute für Materialwissenschaft, Universität Duisburg-Essen, Essen Germany — 2CICECO, University of Aveiro, Aveiro, Portugal

Due to its novel technological implications, the magnetoelectric(ME) effect has led to a bright prospectus for materials that show a direct or indirect coupling between the magnetic and electric order parameters. Owing to scarcity of intrinsic multiferroics, the strain mediated composite systems are a promising approach towards realizing an increased magnetoelectric coupling in bulk materials. The present state of the art in these materials demand concerted efforts toward a better understanding of microscopic mechanisms in the coupling phenomena. Since bulk ME measurements suffer inherent drawbacks concerned with electrical poling, in this work we have studied localized ME effect using scanning probe microscopy(SPM) techniques like Magnetic Force Microscopy(MFM) and Piezoresponse Force Microscopy(PFM ) of bulk ME composite ceramics with a homogeneous distribution of piezoelectric(BaTiO3) and ferrite(BaFe12O19/SrFe12O19) phases. MFM shows a clear restructuring of juxtaposed magnetic domains indicating motion of the domain walls under the effect of applied electric field. Also we observed the effect of magnetic field on the localized hysteresis behavior of constituent BaTiO3 phase. The observed ME coupling is attributed to strain induced changes taking place

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2013 > Regensburg