Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16545
Title: Nanoscale free-standing magnetoelectric heteropillars
Authors: Zhang, J
Fu, H
Lu, W
Dai, J 
Chan, HLW 
Issue Date: 2013
Publisher: Royal Society of Chemistry
Source: Nanoscale, 2013, v. 5, no. 15, p. 6747-6753 How to cite?
Journal: Nanoscale 
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.
URI: http://hdl.handle.net/10397/16545
ISSN: 2040-3364
EISSN: 2040-3372
DOI: 10.1039/c3nr02332j
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