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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Overlap of the intrinsic and extrinsic magnetoelectric effects in BiFeO3-PbTiO3 compounds: Potentialities for magnetic-sensing applications

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Montanher, D. Z. [1] ; Freitas, V. F. [1] ; Pereira, J. R. D. [1] ; Cotica, L. F. [1] ; Garcia, D. [2] ; Eiras, J. A. [2] ; Santos, I. A. [1]
Total Authors: 7
[1] Univ Estadual Maringa, Dept Phys, Multiferro & Multifunct Mat & Devices Grp, BR-87020900 Maringa, PR - Brazil
[2] Univ Fed Sao Carlos, Ferroelect Ceram Grp, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Applied Physics; v. 113, n. 3 JAN 21 2013.
Web of Science Citations: 11

The potentialities of BiFeO3-PbTiO3 multiferroic compounds for magnetic-field sensing applications is investigated by characterizing the dynamical magnetoelectric response of La doped (0.6)BiFeO3-(0.4)PbTiO3 piezoceramics. The results are compared with those obtained in Nb doped (1 wt. %) PbZr0.53Ti0.47O3 (PZT-5A) piezoceramics and the observed non-linearity of the oscillating voltage response of (0.6) BiFeO3-(0.4) PbTiO3 piezoceramics is attributed to the overlapping of the intrinsic and extrinsic magnetoelectric effects that were successfully decoupled by analyzing the in-phase and out-of-phase voltage components relative to applied oscillating magnetic field. For an alternating cosine-like magnetic field of 0.32 Oe, at the piezoelectric resonance frequency (184.2 kHz), the alternating voltage response decreases from 7.77 mV, at - 10 kOe, to 2.71 mV, at 1.8 kOe, to subsequently increases until 5.97 mV at 10 kOe. This non-linear voltage response, which can be easily converted into a linear signal by using the phase difference, can be used for static magnetic field sensing in a wide range of magnetic fields. (C) 2013 American Institute of Physics. {[}] (AU)

FAPESP's process: 08/04025-0 - Nanostructured multifunctional multiferroic materials: synthesis, properties, phenomenology and applications
Grantee:José Antonio Eiras
Support type: Research Projects - Thematic Grants