Imperial College London
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ProfessorRogerWhatmore

Faculty of Engineering, Department of Materials

Visiting Professor
 
 
 
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Contact

 

r.whatmore

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Faraz:2016:10.1111/jace.14597,
author = {Faraz, A and Maity, T and Schmidt, M and Deepak, N and Roy, S and Pemble, ME and Whatmore, RW and Keeney, L},
doi = {10.1111/jace.14597},
journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY},
pages = {975--987},
title = {Direct visualization of magnetic-field-induced magnetoelectric switching in multiferroic aurivillius phase thin films},
url = {http://dx.doi.org/10.1111/jace.14597},
volume = {100},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Multiferroic materials displaying coupled ferroelectric and ferromagnetic order parameters could provide a means for data storage whereby bits could be written electrically and read magnetically, or vice versa. Thin films of Aurivillius phase Bi6Ti2.8Fe1.52Mn0.68O18, previously prepared by a chemical solution deposition (CSD) technique, are multiferroics demonstrating magnetoelectric coupling at room temperature. Here, we demonstrate the growth of a similar composition, Bi6Ti2.99Fe1.46Mn0.55O18, via the liquid injection chemical vapor deposition technique. High-resolution magnetic measurements reveal a considerably higher in-plane ferromagnetic signature than CSD grown films (MS=24.25 emu/g (215 emu/cm3), MR=9.916 emu/g (81.5 emu/cm3), HC=170 Oe). A statistical analysis of the results from a thorough microstructural examination of the samples, allows us to conclude that the ferromagnetic signature can be attributed to the Aurivillius phase, with a confidence level of 99.95%. In addition, we report the direct piezoresponse force microscopy visualization of ferroelectric switching while going through a full in-plane magnetic field cycle, where increased volumes (8.6% to 14% compared with 4% to 7% for the CSD-grown films) of the film engage in magnetoelectric coupling and demonstrate both irreversible and reversible magnetoelectric domain switching.
AU  - Faraz,A
AU  - Maity,T
AU  - Schmidt,M
AU  - Deepak,N
AU  - Roy,S
AU  - Pemble,ME
AU  - Whatmore,RW
AU  - Keeney,L
DO  - 10.1111/jace.14597
EP  - 987
PY  - 2016///
SN  - 0002-7820
SP  - 975
TI  - Direct visualization of magnetic-field-induced magnetoelectric switching in multiferroic aurivillius phase thin films
T2  - JOURNAL OF THE AMERICAN CERAMIC SOCIETY
UR  - http://dx.doi.org/10.1111/jace.14597
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000397503100017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/45724
VL  - 100
ER  -
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