Magnetoelectric coupling study in multiferroic Pb(Fe{sub 0.5}Nb{sub 0.5})O{sub 3} ceramics through small and large electric signal standard measurements

Journal Article · Sun May 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3585757· OSTI ID:21560233

Raymond, Oscar; Siqueiros, Jesus M ^[1]; Font, Reynaldo; Portelles, Jorge ^[1]

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1. Universidad Nacional Autonoma de Mexico, Centro de Nanociencias y Nanotecnologia, Ensenada, Baja California, Mexico, 22860 (Mexico)

Multifunctional multiferroic materials such as the single phase compound Pb(Fe{sub 0.5}Nb{sub 0.5})O{sub 3} (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 {epsilon}-tilde, impedance Z-tilde, electric modulus M-tilde, admittance Y-tilde, and the electromechanical parameters and coupling factors is presented. The results are correlated with a previous study of structural, morphological, small signal dielectric frequency-temperature response, and the ferroelectric hysteretic, magnetic and magnetodielectric behaviors. The observed shifts of the resonance and antiresonance frequency values can be associated with change of the ferroelectric domain size favored by the readjustment of the oxygen octahedron when the magnetic field is applied. From P-E hysteresis loops obtained without and with an external applied magnetic field, a dc magnetoelectric coupling effect with maximum value of 4 kV/cm T (400 mV/cm Oe) was obtained.

• OSTI ID: 21560233
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 9; Other Information: DOI: 10.1063/1.3585757; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ANTIFERROMAGNETIC MATERIALS
CERAMICS
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ELECTRIC FIELDS
ELECTROCHEMISTRY
FERROELECTRIC MATERIALS
HYSTERESIS
IMPEDANCE
IRON COMPOUNDS
LEAD COMPOUNDS
MAGNETIC FIELDS
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
NIOBIUM COMPOUNDS
OXYGEN COMPOUNDS
PERMITTIVITY
POLARIZATION
RESONANCE
SPECTROSCOPY
CHEMISTRY
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
MAGNETIC MATERIALS
MATERIALS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS