Magnetoelectric coupling study in multiferroic Pb(Fe0.5Nb0.5)O3 ceramics through small and large electric signal standard measurements

Multifunctional multiferroic materials such as the single phase compound Pb(Fe0.5Nb0.5)O3 (PFN), where ferroelectric and antiferromagnetic order coexist, are very promising and have great interest from the academic and technological points of view. In this work, coupling of the ferroelectric and magnetic moments is reported. For this study, a combination of the small signal response using the impedance spectroscopy technique and the electromechanical resonance method with the large signal response through standard ferroelectric hysteresis measurement, has been used with and without an applied magnetic field. The measurements to determine the electrical properties of the ceramic were performed as functions of the bias and poling electric fields. A simultaneous analysis of the complex dielectric constant ɛ, impedance Z, electric modulus M, admittance Y, and the electromechanical parameters and coupling factors is presented. The results are correlated with a previous study of structural, morphological, s...

[1]  Zhifeng Ren,et al.  Multiferroicity: the coupling between magnetic and polarization orders , 2009, 0908.0662.

[2]  A. Mehta,et al.  SYNCHROTRON TECHNIQUES APPLIED TO FERROELECTRICS: SOME REPRESENTATIVE CASES , 2008 .

[3]  J. Portelles,et al.  Evidence of magnetodielectric coupling in multiferroic Pb"Fe0.5Nb0.5…O3 ceramics from ferroelectric measurements and electron paramagnetic resonance , 2008 .

[4]  S. Dong,et al.  Magnetoelectric Laminate Composites: An Overview , 2008 .

[5]  L. Martin,et al.  Controlling magnetism with multiferroics , 2007 .

[6]  G. Srinivasan,et al.  Theory of magnetoelectric effects in ferrite piezoelectric nanocomposites , 2007 .

[7]  J. Prieto,et al.  Giant sharp and persistent converse magnetoelectric effects in multiferroic epitaxial heterostructures. , 2007, Nature materials.

[8]  A. Fert,et al.  Tunnel junctions with multiferroic barriers. , 2007, Nature materials.

[9]  J. Scott,et al.  Data storage. Multiferroic memories. , 2007, Nature materials.

[10]  R. Ramesh,et al.  Multiferroics: progress and prospects in thin films. , 2007, Nature materials.

[11]  J. Portelles,et al.  Frequency-temperature response of ferroelectromagnetic Pb(Fe1/2Nb1/2)O3 ceramics obtained by different precursors. III. Dielectric relaxation near the transition temperature , 2006 .

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

[13]  J. Portelles,et al.  Frequency-temperature response of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained by different precursors. Part I. Structural and thermo-electrical characterization , 2005 .

[14]  J. Portelles,et al.  Frequency-temperature response of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained by different precursors. Part II. Impedance spectroscopy characterization , 2005 .

[15]  Jungho Ryu,et al.  Magnetoelectric Effect in Composites of Magnetostrictive and Piezoelectric Materials , 2002 .