Tunable Magnetoelectric Response in Cofired (Bi0.5Na0.5TiO3-Bi0.5K0.5TiO3)/CoFe2O4 Laminated Composite
| Autor: | Shengxiang Huang, Shuoqing Yan, Sheng Liu, Yulan Cheng, Lianwen Deng, Kexiang Wei |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Solid-state physics Composite number 02 engineering and technology Cofiring 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Magnetic field Phase (matter) 0103 physical sciences Materials Chemistry Laminated composites Equivalent circuit Coupling (piping) Electrical and Electronic Engineering Composite material 0210 nano-technology |
| Zdroj: | Journal of Electronic Materials. 49:650-658 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-019-07773-8 |
| Popis: | Magnetoelectric (ME) composites exhibiting strain-mediated coupling are gaining increasing interest for applications. In this paper, an enhancement of ME response on simple lead-free laminated composites (80Bi0.5Na0.5TiO3-20Bi0.5K0.5TiO3)/CoFe2O4 (BNKT/CFO) prepared by a modified cofiring processing were demonstrated, by analyzing the effect of thickness variation on ME properties. The coexistence of independent BNKT and CFO phase and the presence of a clear and well-bonded interface were confirmed. Specifically, the maximum ME voltage coefficient of laminated composite reached up to 74.59 mV/(cm·Oe) with an optimized BNKT/CFO layer thickness ratio of 1:2. The static elastic model and the equivalent circuit model were used to determine the interface coupling. Also, there is a large magnetodielectric (MD) response up to 5.1% in a magnetic field of 8 kOe. Tuning the layer thickness, the ME response of laminated composite is further optimized, which is of significance in development of magnetic-field-tuned electronic devices. |
| Databáze: | OpenAIRE |
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