Poster

FZJ-2016-01400

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The magnetoelectric effect across scales

Lupascu, D. C. ; Wende, H. ; Schröder, J. ; Labusch, M. ; Etier, M. ; Nazrabi, A. ; Anusca, I. ; Trivedi, H. ; Gao, Y.FZJ* ; Escobar, M. ; Shvartsman, V. V. ; Landers, J. ; Salamon, S. ; Schmitz-Antoniak, C.FZJ*

2015

Abstract: Magnetoelectric coupling can arise in intrinsic multiferroics as well as composites. We will outline how for intrinsic BiFeO3 nanoparticles yield different magnetoelectric properties at room temperature than larger grains or bulk material. Magnetoelectric nanoscale composites of BaTiO3 and CoFe2O4 display rather poor magnetoelectric coupling macroscopically. Their micron scale counterparts on the other hand yield nice macroscopic response. The mechanical, electrical, and magnetic effects are analyzed using techniques including Mössbauer spectroscopy, magnetic force microscopy, piezoforce microscopy, and macroscopic techniques. It will be shown that microscopic coupling is strong also for (partly) conducting magnetic inclusions and nanosystems while macroscopic properties are highly dependent on good insulation of the samples. Experimental asymmetries in determining the magnetoelectric coupling coefficient are discussed. Support via FP7 Marie Curie Initial Training Network *Nanomotion* (grant n∘ 290158) & Forschergruppe 1509 are acknowledged.

---

Contributing Institute(s):

1. Elektronische Eigenschaften (PGI-6)

Research Program(s):

1. 522 - Controlling Spin-Based Phenomena (POF3-522) (POF3-522)

Appears in the scientific report 2015

---

Database coverage:
No Authors Fulltext

---