Temperature dependent magnetoelectric response of lead-free Na$_{0.4}$K$_{0.1}$Bi$_{0.5}$TiO$_3$-NiFe$_2$O$_4$ laminated composites
This study investigates the temperature-dependent quasi-static magnetoelectric (ME) response of electrically poled lead-free Na$_{0.4}$K$_{0.1}$Bi$_{0.5}$TiO$_3$-NiFe$_2$O$_4$ (NKBT-NFO) laminated composites. The aim is to understand the temperature stability of ME-based sensors and devices. The rel...
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Main Authors | , , , , , , |
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Format | Journal Article |
Language | English |
Published |
12.07.2023
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Subjects | |
Online Access | Get full text |
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Summary: | This study investigates the temperature-dependent quasi-static
magnetoelectric (ME) response of electrically poled lead-free
Na$_{0.4}$K$_{0.1}$Bi$_{0.5}$TiO$_3$-NiFe$_2$O$_4$ (NKBT-NFO) laminated
composites. The aim is to understand the temperature stability of ME-based
sensors and devices. The relaxor ferroelectric nature of NKBT is confirmed
through impedance and polarization-electric (PE) hysteresis loop studies, with
a depolarization temperature (Td) of approximately 110$^\circ$C. Heating causes
a decrease and disappearance of planar electromechanical coupling, charge
coefficient, and remnant polarization above Td. The temperature rise also leads
to a reduction in magnetostriction and magnetostriction coefficient of NFO by
approximately 33% and 25%, respectively, up to approximately 125$^\circ$C. At
room temperature, the bilayer and trilayer configurations exhibit maximum ME
responses of approximately 33 mV/cm.Oe and 80 mV/cm.Oe, respectively, under low
magnetic field conditions (300-450 Oe). The ME response of NKBT/NFO is highly
sensitive to temperature, decreasing with heating in accordance with the
individual temperature-dependent properties of NKBT and NFO. This study
demonstrates a temperature window for the effective utilization of
NKBT-NFO-based laminated composite ME devices. |
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DOI: | 10.48550/arxiv.2307.06034 |