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Incorporation of cobalt ions into magnetoelectric gallium ferrite epitaxial films: tuning of conductivity and magnetization

Title
Incorporation of cobalt ions into magnetoelectric gallium ferrite epitaxial films: tuning of conductivity and magnetization
Authors
Oh, S. H.Shin, R. H.Lefevre, C.Thomasson, A.Roulland, F.Shin, Y.Kim, D-H.Kim, J-Y.Demchenko, A.Leuvrey, C.Meny, C.Jo, W.Viart, N.
Ewha Authors
조윌렴
SCOPUS Author ID
조윌렴scopus
Issue Date
2015
Journal Title
RSC ADVANCES
ISSN
2046-2069JCR Link
Citation
vol. 5, no. 43, pp. 34265 - 34271
Publisher
ROYAL SOC CHEMISTRY
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Thin films of Ga0.6Fe1.4O3 show ferrimagnetism with a transition temperature at around 360 K but suffer from large charge conduction. Substituting Fe2+ with non-magnetic Mg2+ ions reduces the charge conduction but also lowers the magnetic transition temperature. Doping Ga0.6Fe1.4O3 thin films with magnetic Co2+ ions leads to a similar reduction in the charge conduction, which is significant by two orders of magnitude, and, on the other hand, does not lead to any modification of the ferrimagnetic transition. The remnant magnetization of the leakage currents free Co-doped Ga0.6Fe1.4O3 thin films is of 53 emu cm(-3) at 300 K. These films, therefore, are promising materials with potential uses in magnetoelectric and multiferroic devices.
DOI
10.1039/c5ra03609g
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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