3 years ago

Tunable Strain in Magnetoelectric ZnO Microrod Composite Interfaces

Tunable Strain in Magnetoelectric ZnO Microrod Composite Interfaces
Christine Kirchhof, Manfred Burghammer, Madjid Abes, Christian Thorsten Koops, Martina Gerken, Christina Krywka, Michael Sztucki, Rainer Adelung, Martin Müller, Sören Kaps, Eckhard Quandt, Julius Schmalz, Yogendra Kumar Mishra, Bridget Mary Murphy, Olaf Magnus Magnussen, Thomas Dane, Stjepan Bozidar Hrkac, Enno Lage
The intrinsic strain at coupled components in magnetoelectric composites plays an important role for the properties and function of these materials. In this in situ X-ray nanodiffraction experiment, the coating-induced as well as the magnetic-field-induced strain at the coupled interface of complex magnetoelectric microcomposites were investigated. These consist of piezoelectric ZnO microrods coated with an amorphous layer of magnetostrictive (Fe90Co10)78Si12B10. While the intrinsic strain is in the range of 10–4, the magnetic-field-induced strain is within 10–5, one order of magnitude smaller. Additionally, the strain relaxation distance of around 5 μm for both kinds of strain superposes indicating a correlation. The value of both intrinsic and magnetic-field-induced strain can be manipulated by the diameter of the rodlike composite. The intrinsic interface strain within the ZnO increases exponentially by decreasing the rod diameter while the magnetic-field-induced strain increases linearly within the given range. This study shows that miniaturizing has a huge impact on magnetoelectric composite properties, resulting in a strongly enhanced strain field and magnetic response.

Publisher URL: http://dx.doi.org/10.1021/acsami.6b15598

DOI: 10.1021/acsami.6b15598

You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.