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首页> 外文期刊>Materials Science and Engineering >Composite BNT-BT_(0.08)/CoFe_2O_4 with core-shell nanostructure for piezoelectric and ferromagnetic applications
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Composite BNT-BT_(0.08)/CoFe_2O_4 with core-shell nanostructure for piezoelectric and ferromagnetic applications

机译:具有核-壳纳米结构的复合BNT-BT_(0.08)/ CoFe_2O_4,用于压电和铁磁应用

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摘要

In this work, we report on the synthesis and characterization of BNT-BT0.08/CoFe2O4 biphasic composite with core-shell structure. This artificial core (BNT-BT0.08/shell (CoFe2O4) heterostructure was prepared by sol-gel method and the resulting composite was characterized in term of microstructure, dielectric, piezoelectric and magnetic properties. BNT-BT0.08/CoFe2O4 sintered ceramic shows high permittivity (epsilon' = 30) and high dielectric losses (tan delta = 10) in the low frequency range (nu = 10(4) Hz), remnant polarization (Pr) of similar to 7.7 mu C/cm(2) and, remanent magnetization (Mr) of 24 emu/g at 5 K and of 14 emu/g, at room temperature. The present study reveals that the ferroelectric, piezoelectric and magnetic properties of this new architectured composite depend on the amount of each component and, can be tailored by adjusting their synthesis conditions. BNT-BT0.08/CoFe2O4 core-shell material investigated in this work provides a novel way to exploit new applications for the multifunctional composite, such as piezoelectric sensor, magnetoelectronic sensors and data storage devices.
机译:在这项工作中,我们报告了具有核-壳结构的BNT-BT0.08 / CoFe2O4双相复合材料的合成和表征。通过溶胶-凝胶法制备了人工核(BNT-BT0.08 /壳(CoFe2O4)异质结构,并从微观结构,介电,压电和磁性等方面对复合材料进行了表征。在低频范围(nu <= 10(4)Hz)中具有高介电常数(ε> = 30)和高介电损耗(tan delta> = 10),残余极化(Pr)约为7.7μC / cm( 2),室温下在5 K下的剩余磁化强度(Mr)为24 emu / g,在室温下为14 emu / g,本研究表明,这种新型结构复合材料的铁电,压电和磁性取决于其含量。这项工作中研究的BNT-BT0.08 / CoFe2O4核壳材料为开发多功能复合材料的新应用提供了一种新颖的方式,例如压电传感器,磁电子传感器和数据。存储设备。

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