Magnetization and magneto-electric effect in La-doped BiFeO3

Details Magnetization and magneto-electric effect in La-doped BiFeO3 Magnetization and magneto-electric effect in La-doped BiFeO3

2009-04-10

arxiv.org/abs/0904.1707v2

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 6 figures

Scientific paper

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.

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