Magnetic enhancement and low thermal expansion of (1-x-y)PbTiO3-xBi(Ni1/2Ti1/2)O3-yBiFeO3
Magnetic enhancement and low thermal expansion of (1-x-y)PbTiO3-xBi(Ni1/2Ti1/2)O3-yBiFeO3
复制标题
DOI：
10.1039/c1jm12410b
复制
发表时间：
2011-01-01
影响因子：
--
通讯作者：
Xing, Xianran
中科院分区：
文献类型：
--
作者：
Hu, Penghao;Kang, Huajun;Xing, Xianran
通过控制化合物的化学成分，合成了一种低膨胀、铁磁性增强的化合物（1-x-y）PbTiO 3-xBi（Ni 1/2Ti 1/2）O-3-yBiFeO（3）。适当的Bi（Ni_（1/2）Ti_（1/2））O_（3-）和BiFeO_（3-）掺杂比例不仅可以调节材料的热膨胀系数，而且可以在较宽的温度范围内实现较高的热稳定性。BiFeO3的加入提高了材料的铁磁性，而Bi（Ni1/2Ti1/2）O3-的加入使材料的铁电和压电性能得到了很好的保持。由于Bi（Ni 1/2Ti 1/2）O-3稳定了陶瓷的结构，降低了陶瓷的内应力，使陶瓷具有较高的硬度和良好的断裂韧性。这些优良的性能使该材料具有多功能性和应用前景。本工作为设计和开发具有所需性能的多功能材料提供了一种途径。
A low thermal expansion and ferromagnetism enhanced compound (1-x-y)PbTiO3-xBi(Ni1/2Ti1/2) O-3-yBiFeO(3) was developed by chemical composition controlling. The appropriate ratio of dopants Bi (Ni1/2Ti1/2)O-3 and BiFeO3 not only tailored the thermal expansion but also realized high thermal stability in a wide temperature range. The ferromagnetism was improved by BiFeO3 and the ferroelectric and piezoelectric properties were well retained with Bi(Ni1/2Ti1/2)O-3. The ceramics show good mechanical performances such as high hardness and satisfied fracture toughness due to the Bi(Ni1/2Ti1/2)O-3 stabilizing the structure and reducing the internal stress. These good properties make the material multifunctional and promising in the application. The present work provides a way to design and explore multifunctional materials with required properties.