Magnetization and magneto-electric effect in La-doped BiFeO3

We report on magnetisation and magneto-capacitance measurements in the Bi1-xLaxFeO3 series for 0 < x < 0.15. We confirm that doping with La reduces the threshold magnetic field Hc for cancelling the magnetic spiral phase, and we show that Hc decreases as the La content increases up to x=0.15,...

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Bibliographic Details
Published in:arXiv.org 2009-10
Main Authors: G Le Bras-Jasmin, Colson, D, get, A, Genand-Riondet, N, Tourbot, R, Bonville, P
Format: Article
Language:English
Subjects:
Bismuth ferrite
Capacitance
Magnetic fields
Magnetization
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Summary:We report on magnetisation and magneto-capacitance measurements in the Bi1-xLaxFeO3 series for 0 < x < 0.15. We confirm that doping with La reduces the threshold magnetic field Hc for cancelling the magnetic spiral phase, and we show that Hc decreases as the La content increases up to x=0.15, which is the highest concentration for maintaining the non-centrosymmetric rhombohedral structure of BiFeO3. Measurements of the dielectric constant as a function of magnetic field in the series also show a maximum magneto-capacitance for x=0.15.
ISSN:2331-8422