Magnetodielectric effect of Bi6Fe2Ti3O18 film under an ultra-low magnetic field

Details Magnetodielectric effect of Bi6Fe2Ti3O18 film under an ultra-low magnetic field Magnetodielectric effect of Bi6Fe2Ti3O18 film under an ultra-low magnetic field

2006-02-20

arxiv.org/abs/cond-mat/0602450v2

J. Phys.: Condens. Matter 18 (2006) 4801-4807

Physics

Condensed Matter

Materials Science

10 pages 4 figures, planned to submit to J. Phys.: Condensed Matter

Scientific paper

10.1088/0953-8984/18/20/004

Good quality and fine grain Bi6Fe2Ti3O18 magnetic ferroelectric films with single-phase layered perovskite structure have been successfully prepared via metal organic decomposition (MOD) method. Results of low-temperature magnetocapacitance measurements reveal that an ultra-low magnetic field of 10 Oe can produce a nontrivial magnetodielectric (MD) response in zero-field-cooling condition, and the relative variation of dielectric constants in magnetic field is positive, i.e., MD=0.05, when T<55K, but negative with a maximum of MD=-0.14 when 55K

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