FREQUENCY DEPENDENCE OF THE MAGNETOELECTRIC VOLTAGE COEFFICIENT IN (BiFeO3)x-(BaTiO3)1-x CERAMICS

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DOI

Tomasz Pikula

t.pikula@pollub.pl

Karol Kowal

k.kowal@ncbj.gov.pl

Piotr Guzdek

pguzdek@ite.waw.pl

Abstract

Composition-dependent magnetoelectric properties of sintered (BiFeO3)x-(BaTiO3)1-x ceramics have been recently observed and reported in the literature. Measurements of the magnetoelectric effect (ME) for these materials have been performed by usage of the dynamic method. The samples with x = 0.9, 0.8 and 0.7 were placed in a static (DC) magnetic field created by an electromagnet on which a sinusoidal (AC) magnetic field with a frequency of 1 kHz produced by Helmholtz coils was superimposed. In this work the theory of the dynamic measurement was presented and the optimal frequency of the AC field was determined in order to minimize the processes causing undesired reduction of the measured voltage signal.

Keywords:

multiferroics, magnetoelectric effect (ME), magnetoelectric materials, magnetoelectric voltage coefficient, lock-in technique, dynamic measurement of ME effect

References

Article Details

Pikula, T., Kowal, K., & Guzdek, P. (2015). FREQUENCY DEPENDENCE OF THE MAGNETOELECTRIC VOLTAGE COEFFICIENT IN (BiFeO3)x-(BaTiO3)1-x CERAMICS. Informatyka, Automatyka, Pomiary W Gospodarce I Ochronie Środowiska, 5(4), 62–69. https://doi.org/10.5604/20830157.1176578