Magnetoelectric coupling susceptibility from magnetodielectric effect

A multiferroic material with a pronounced degree of the magnetoelectric (ME) coupling at room temperature is of great technological importance. A widely used method of indirectly assessing the ME coupling is based on the magnetodielectric (MD) effect, which accounts for the variation in dielectric permittivity under an applied bias magnetic field. At the present stage, however, there is no systematic guideline on evaluating the ME coupling susceptibility from the MD effect. Here we propose a simple theoretical method of estimating the ME coupling susceptibility using the MD data. This alternative approach is applied to an epitaxially grown La-doped BiFeO3 thin film as an illustrative example.

[1]  Y. Tokura,et al.  Low-Magnetic-Field Control of Electric Polarization Vector in a Helimagnet , 2008, Science.

[2]  H. M. Jang,et al.  Strain-mediated magnetoelectric coupling in BaTiO3-Co nanocomposite thin films , 2008 .

[3]  H. M. Jang,et al.  Dynamic magnetoelectric coupling in electronic ferroelectric LuFe2O4 , 2007 .

[4]  H. M. Jang,et al.  Magnetoelectric coupling of [00l]-oriented Pb(Zr0.4Ti0.6)O3–Ni0.8Zn0.2Fe2O4 multilayered thin films , 2007 .

[5]  Sung-Ho Lee,et al.  Dynamically enhanced magnetodielectric effect and magnetic-field-controlled electric relaxations in La-doped BiMnO3 , 2007 .

[6]  X. Zhong,et al.  Multiferroic nanoparticulate Bi3.15Nd0.85Ti3O12–CoFe2O4 composite thin films prepared by a chemical solution deposition technique , 2007 .

[7]  A. Adeyeye,et al.  Sc modified multiferroic BiFeO3 thin films prepared through a sol-gel process , 2007 .

[8]  G. Catalán.  Magnetocapacitance without magnetoelectric coupling , 2006 .

[9]  J. Li,et al.  Magnetocapacitance and Magnetoresistance Near Room Temperature in a Ferromagnetic Semiconductor: La2NiMnO6 , 2005 .

[10]  P. Schiffer,et al.  Magnetodielectric consequences of phase separation in the colossal magnetoresistance manganite Pr 0.7 Ca 0.3 Mn O 3 , 2005, cond-mat/0509192.

[11]  Youichi Murakami,et al.  Ferroelectricity from iron valence ordering in the charge-frustrated system LuFe2O4 , 2005, Nature.

[12]  B. Raveau,et al.  Magnetocapacitance effect in perovskite-superlattice based multiferroics , 2005, cond-mat/0506305.

[13]  Min Gyu Kim,et al.  Epitaxially grown La-modified BiFeO3 magnetoferroelectric thin films , 2005 .

[14]  J. Wan,et al.  Magnetoelectric CoFe2O4–Pb(Zr,Ti)O3 composite thin films derived by a sol-gel process , 2005 .

[15]  M. Fiebig,et al.  Magnetic phase control by an electric field , 2004, Nature.

[16]  Y. Tokura,et al.  Magnetic control of ferroelectric polarization , 2003, Nature.

[17]  R. Ramesh,et al.  Epitaxial BiFeO3 Multiferroic Thin Film Heterostructures , 2003, Science.

[18]  Gopalan Srinivasan,et al.  Magnetoelectric bilayer and multilayer structures of magnetostrictive and piezoelectric oxides , 2001 .

[19]  Nicola A. Hill,et al.  Why Are There so Few Magnetic Ferroelectrics , 2000 .

[20]  A. Srinivas,et al.  An experimental setup for dynamic measurement of magnetoelectric effect , 1998 .