Covering vertically aligned carbon nanotubes with a multiferroic compound
authors Mahajan, A; Rodriguez, BJ; Saravanan, KV; Ramana, EV; Costa, PMFJ; Vilarinho, PM
nationality International
journal CARBON
keywords BIFEO3 THIN-FILMS; MAGNETIC-PROPERTIES; ROOM-TEMPERATURE; CRYSTAL; GROWTH; SIZE
abstract This work highlights the possible use of vertically-aligned multiwall carbon nanotubes (VA-MWCNTs) as bottom electrodes for microelectronics, for example for memory applications. As a proof of concept BiFeO3 (BFO) films were fabricated in-situ deposited on the surface of VA-MWCNTs by RF (radio frequency) magnetron sputtering. For in situ deposition temperature of 400 degrees C and deposition time up to 2 h, BFO films cover the MWCNTs and no damage occurs either in the film or MWCNTs. In spite of the macroscopic lossy polarization behaviour, the ferroelectric nature, domain structure and switching of these conformal BFO films was verified by piezo force microscopy. G type antiferromagnetic ordering with weak ferromagnetic ordering loop was proved for BFO films on VA-MWCNTs having a coercive field of 700 Oe. (C) 2014 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn Aug-23
year published 2015
volume 82
beginning page 408
ending page 416
digital object identifier (doi) 10.1016/j.carbon.2014.10.084
web of science category Chemistry, Physical; Materials Science, Multidisciplinary
subject category Chemistry; Materials Science
unique article identifier WOS:000345683100043
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journal analysis (jcr 2019):
journal impact factor 8.821
5 year journal impact factor 7.984
category normalized journal impact factor percentile 86.965
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