| Autor: |
Sheng Liu, Lianwen Deng, Shuoqing Yan, Heng Luo, Lingling Yao, Longhui He, Yuhan Li, Mingzhong Wu, Shengxiang Huang |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 2017, Vol. 122 Issue 2, p1-6, 6p |
| Abstrakt: |
Lead-free multiferroic ceramics consisting of (1-x) 80Bi0.5Na0.5TiO3-20Bi0.5K0.5TiO3 (BNTBKT)-xNi0.8Zn0.2Fe2O4 (NZFO) (x=0, 0.15, 0.25, 0.35, and 0.45) were synthesized by the in situ sol-gel method. The structural, ferroelectric, piezoelectric, ferromagnetic, and magnetoelectric (ME) properties were measured as a function of the NZFO content x. The results showed that the coexistence of BNT-BKT and NZFO phases and the presence of the morphotropic phase boundary in the BNT-BKT phase with a high piezoelectric coefficient d33 (~131 pC/N) were confirmed. The composites exhibited a homogeneous microstructure and well-combined interfaces between the magnetostrictive and piezoelectric phases, as well as an improved ME response. The largest ME voltage coefficient (αME) of 42.41 mV/cm Oe was achieved for the 0.65(BNT-BKT)-0.35NZFO composite, which is in fact the highest one reported so far for lead-free particulate ME composites fabricated via in situ processing. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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