FREQUENCY DEPENDENCE OF THE MAGNETOELECTRIC VOLTAGE COEFFICIENT IN (BiFeO3)x-(BaTiO3)1-x CERAMICS
Tomasz Pikula
t.pikula@pollub.plPolitechnika Lubelska, Instytut Elektroniki i Technik Informacyjnych, Zakład Elektroniki i Fizyki Technicznej (Poland)
Karol Kowal
Narodowe Centrum Badań Jądrowych, Departament Energii Jądrowej, Zakład Energetyki Jądrowej (Poland)
Piotr Guzdek
Instytut Technologii Elektronowej, Oddział w Krakowie, Zakład Mikroelektroniki (Poland)
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 effectReferences
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Authors
Tomasz Pikulat.pikula@pollub.pl
Politechnika Lubelska, Instytut Elektroniki i Technik Informacyjnych, Zakład Elektroniki i Fizyki Technicznej Poland
Authors
Karol KowalNarodowe Centrum Badań Jądrowych, Departament Energii Jądrowej, Zakład Energetyki Jądrowej Poland
Authors
Piotr GuzdekInstytut Technologii Elektronowej, Oddział w Krakowie, Zakład Mikroelektroniki Poland
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