CeO2/NiTiO3 nanocomposites; synthesis, photoluminescence and magnetic behavior

被引：8
|
作者：
Enhessari, M. [1 ]
Sakhaei, M. [2 ]
Salehabadi, A. [1 ]
Etemad, L. [2 ]
机构：
[1] Islamic Azad Univ, Dept Chem, Naragh Branch, Naragh, Iran
[2] Islamic Azad Univ, Dept Chem, North Tehran Branch, Tehran, Iran
来源：
MATERIALS SCIENCE-POLAND | 2017年 / 35卷 / 02期
关键词：
NiTiO3; sol-gel; magnetic behavior; nanocomposite;
D O I：
10.1515/msp-2017-0060
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Pure phase NiTiO3 was obtained via a modified sol-gel method. Addition of CeO2 in a modified oxidizing atmosphere in stearic acid at 750 degrees C led to the growth of several nanoscaled Ce-rich phases. The formation of NiTiO3 and CeO2/NiTiO3 was strongly confirmed based on metal-oxygen and metal-metal absorption bands. The nanometric formation of crystals and narrow distribution of nanoparticles were confirmed by XRD and FE-SEM. The magnetic properties indicated weak ferromagnetic behavior of NiTiO3 and paramagnetic behavior of CeO2/NiTiO3 nanocomposites. The paramagnetic properties were improved gradually into superparamagnetic upon increasing CeO2 domain to 30 mol%. It was observed that the current density can achieve 1 x 10(-9) A/cm(2) for the sample containing 30 mol% CeO2 at an electrical field equal to 40 V/cm.
引用
收藏
页码：275 / 282
页数：8
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