Preparation and Magnetic Properties of Ferrite/Lead Zirconate Titanate Core/Shell Nanoparticles

被引：0
|
作者：
Liu Rongzheng [1 ]
Zhao Yuzhen [2 ]
Zhao Yongjie [2 ]
Zhou Heping [2 ]
机构：
[1] Tsinghua Univ, Beijing 100084, Peoples R China
[2] State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2015年 / 44卷
关键词：
multiferroic; core/shell; nanocomposites; ferrite; perovskite oxides;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Uniform ferrite/PZT core-shell nanoparticles were obtained via a combined hydrothermal and annealing process. A dense and well-crystallized PZT layer was formed by in-situ reaction between the A-site ion of lead and the B-site ions of zirconium and titanium on the Fe3O4 nanoparticles through the hydrothermal treatment and subsequent annealing process. The Fe3O4 core is transformed into gamma-Fe2O3 when the nanoparticles are annealed at 650 degrees C. The PbFe12O19 phase forms when the nanoparticles are annealed at 750 degrees C. These core-shell nanostructures show well-defined interface and highly oriented growth. The saturation magnetization values for gamma-Fe2O3/PZT and PbFe12O19/PZT are 18.47 and 17.79 Am-2.kg(-1), respectively. From gamma-Fe2O3/PZT to PbFe12O19/PZT, the coercivity changes from 69.3 x 79.6 A/m to 2552.7x79.6 A/m.
引用
收藏
页码：404 / 407
页数：4
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