Magnetoelectric CoFe2O4-lead zirconate titanate thick films prepared by a polyvinylpyrrolidone-assisted sol-gel method

Magnetoelectric CoFe2O4-PZT (lead zirconate titanate) films as thick as 1 mu m have been prepared by spin coating using a PZT sol-gel solution containing polyvinylpyrrolidone and CoFe2O4 powder. X-ray diffraction result reveals that there exists no chemical reaction or phase diffusion between the CoFe2O4 and PZT phases. The scanning electron microscopy observation confirms that the composite thick film is crack-free and has a well-defined microstructure. The composite thick films exhibit good magnetic and ferroelectric properties, as well as distinct magnetoelectric coupling behavior. The magnetoelectric coupling mechanism for the present composite thick film is discussed in detail. (c) 2006 American Institute of Physics.

[1]  C. Nan,et al.  Electric-field-induced magnetization in Pb(Zr,Ti)O3/Terfenol-D composite structures , 2006 .

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

[3]  R Ramesh,et al.  Multiferroic BaTiO3-CoFe2O4 Nanostructures , 2004, Science.

[4]  C. Nan,et al.  Resonance magnetoelectric effect in bulk composites of lead zirconate titanate and nickel ferrite , 2004 .

[5]  S. Sathaye,et al.  Modification of spin coating method and its application to grow thin films of cobalt ferrite , 2003 .

[6]  M. Wuttig,et al.  Exploration of artificial multiferroic thin-film heterostructures using composition spreads , 2004 .

[7]  Haydn H D Chen,et al.  Magnetic-field-induced electric polarization in multiferroic nanostructures. , 2005, Physical review letters.

[8]  M. P. Singh,et al.  The single-phase multiferroic oxides: from bulk to thin film , 2005 .

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

[10]  S. Dong,et al.  Enhanced magnetoelectric effects in laminate composites of Terfenol-D/Pb(Zr,Ti)O3 under resonant drive , 2003 .

[11]  D. A. Barrow,et al.  Characterization of thick lead zirconate titanate films fabricated using a new sol gel based process , 1997 .

[12]  J. Mackenzie,et al.  Crystallization Kinetics Of Metallo-Organics Derived Pzt Thin Film , 1990 .

[13]  A. V. Carazo,et al.  Magnetoelectric Properties in Piezoelectric and Magnetostrictive Laminate Composites , 2001 .

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

[15]  Ce-Wen Nan,et al.  Magnetoelectric CoFe2O4∕Pb(Zr0.52Ti0.48)O3 double-layer thin film prepared by pulsed-laser deposition , 2006 .

[16]  H. Kozuka,et al.  Single‐Step Dip Coating of Crack‐Free BaTiO3 Films >1 μm Thick: Effect of Poly(vinylpyrrolidone) on Critical Thickness , 2004 .

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

[18]  F. Morrison,et al.  Growth of highly resistive BiMnO3 films , 2005 .