Experimental and theoretical investigations of unusual enhancement of room temperature ferromagnetism in nickel-cobalt codoped CeO2 nanostructures

被引：7
作者：
Kumar, Sachin [1 ]
Ahmed, Bilal [1 ]
Singh, Arvind [1 ]
Singh, Ajeet [1 ]
Ojha, Animesh K. [1 ]
机构：
[1] Motilal Nehru Natl Inst Technol Allahabad, Dept Phys, Allahabad 211004, Uttar Pradesh, India
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2018年 / 465卷
关键词：
RTFM; CeO2; nanostructures; Density of states; DFT; Hydrothermal; CO-DOPED CEO2; TOTAL-ENERGY CALCULATIONS; OXYGEN VACANCY; NANOPARTICLES; NI;
D O I：
10.1016/j.jmmm.2018.05.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Room temperature ferromagnetism (RTFM) in Ni/Co codoped CeO2 nanostructures has been studied. The samples are synthesized by hydrothermal method and further characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy (RS), photoluminescence (PL) spectroscopy and vibrating sample magnetometer (VSM) measurements. The undoped CeO2 sample shows RTFM and a consistent enhancement in its RTFM is observed after doping. The Ni (5%)-Co (5%) codoped CeO2 nanostructures revealed interestingly, highest RTFM. The origin of RTFM in all CeO2 samples is explained by electronic density of states and magnetic moments calculated using density functional theory (DFT).
引用
收藏
页码：756 / 761
页数：6
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