Nanoscale free-standing magnetoelectric heteropillars

Jinxing Zhang, Houren Fu, Wei Lu, Jiyan Dai, H. L.W. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

Nanocomposites with a film-on-substrate geometry usually suffer from a large clamping effect from the substrate, inhibiting the elastic-interaction-mediated “product” property such as the magnetoelectric response in piezoelectric–magnetostrictive systems. Here we report a self-assembling strategy to synthesize nanoscaled free-standing magnetoelectric heteropillars. The degree of clamping from the substrate has been greatly reduced, which is manifested by enhanced piezoelectricity and isotropic magnetic behaviors. A combination of techniques such as transmission electron microscopy, Raman spectroscopy and X-ray diffraction provide additional evidence of stress release in the as-prepared nanocomposite. Moreover, as a benefit of this unconstrained structure, we are able to observe a large magnetic-field-induced polarization change of up to 11.5% at room temperature, demonstrating its potential application in future magnetoelectronic devices at the nanoscale.
Original languageEnglish
Pages (from-to)6747-6753
Number of pages7
JournalNanoscale
Volume5
Issue number15
DOIs
Publication statusPublished - 11 Jul 2013

ASJC Scopus subject areas

  • Materials Science(all)

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