Ordered arrays of multiferroic epitaxial nanostructures

Nano Reviews & Experiments

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Title Ordered arrays of multiferroic epitaxial nanostructures
 
Creator Vrejoiu, Ionela; Max Planck Institute of Microstructure Physics
Morelli, Alessio; Max Planck Institute of Microstructure Physics
Biggemann, Daniel; Max Planck Institute of Microstructure Physics
Pippel, Eckhard; Max Planck Institute of Microstructure Physics
 
Subject multiferroic composites; epitaxial nanostructures; pulsed-laser deposition; piezoresponse force microscopy; magnetic force microscopy
 
Description Epitaxial heterostructures combining ferroelectric (FE) and ferromagnetic (FiM) oxides are a possible route to explore coupling mechanisms between the two independent order parameters, polarization and magnetization of the component phases. We report on the fabrication and properties of arrays of hybrid epitaxial nanostructures of FiM NiFe2O4 (NFO) and FE PbZr0,52Ti0.48O3 or PbZr0.2Ti0.8O3, with large range order and lateral dimensions from 200 nm to 1 micron. Methods: The structures were fabricated by pulsed-laser deposition. High resolution transmission electron microscopy and high angle annular dark-field scanning transmission electron microscopy were employed to investigate the microstructure and the epitaxial growth of the structures. Room temperature ferroelectric and ferrimagnetic domains of the heterostructures were imaged by piezoresponse force microscopy (PFM) and magnetic force microscopy (MFM), respectively. Results: PFM and MFM investigations proved that the hybrid epitaxial nanostructures show ferroelectric and magnetic order at room temperature. Dielectric effects occurring after repeated switching of the polarization in large planar capacitors, comprising ferrimagnetic NiFe2O4 dots embedded in ferroelectric PbZr0.52Ti0.48O3 matrix, were studied. Conclusion: These hybrid multiferroic structures with clean and well defined epitaxial interfaces hold promise for reliable investigations of magnetoelectric coupling between the ferrimagnetic / magnetostrictive and ferroelectric / piezoelectric phases.Keywords: multiferroic composites; epitaxial nanostructures; pulsed-laser deposition; piezoresponse force microscopy; magnetic force microscopy(Published: 4 October 2011)Citation: Nano Reviews 2011, 2: 7364 - DOI: 10.3402/nano.v2i0.7364
 
Publisher Co-Action Publishing
 
Contributor
 
Date 2011-10-04
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion

 
Format application/pdf
text/html
application/epub+zip
text/xml
 
Identifier http://www.nanoreviewsexperiments.net/index.php/nano/article/view/7364
10.3402/nr.v2i0.7364
 
Source Nano Reviews & Experiments; Vol 2 (2011) incl Supplements
2002-2727
 
Language eng
 
Relation http://www.nanoreviewsexperiments.net/index.php/nano/article/view/7364/11986
http://www.nanoreviewsexperiments.net/index.php/nano/article/view/7364/11987
http://www.nanoreviewsexperiments.net/index.php/nano/article/view/7364/11990
http://www.nanoreviewsexperiments.net/index.php/nano/article/view/7364/11991
 

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