FREQUENCY DEPENDENCE OF THE MAGNETOELECTRIC VOLTAGE COEFFICIENT IN (BiFeO3)x-(BaTiO3)1-x CERAMICS
Journal Title: Informatyka Automatyka Pomiary w Gospodarce i Ochronie Środowiska - Year 2015, Vol 5, Issue 4
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 frequencyof 1 kHz produced by Helmholtz coils was superimposed. In this work the theory of the dynamic measurement was presented and the optimal frequencyof the AC field was determined in order to minimize the processes causing undesired reduction of the measured voltage signal.
Authors and Affiliations
Tomasz Pikula, Karol Kowal, Piotr Guzdek
Keywords
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