Sol-gel synthesis and characterisation of (Nd, Cr) co-doped BiFeO3 nanoparticles

被引：22
作者：
Vanga, Pradeep Reddy [1 ]
Mangalaraja, R. V. [2 ]
Ashok, M. [1 ]
机构：
[1] Natl Inst Technol, Dept Phys, Nanomat Lab, Tiruchirappalli, India
[2] Univ Concepcion, Dept Mat Engn, Concepcion, Chile
来源：
JOURNAL OF EXPERIMENTAL NANOSCIENCE | 2016年 / 11卷 / 17期
关键词：
sol-gel; magnetisation; ferroelectric; leakage current density; photocatalytic; ENHANCED PHOTOCATALYTIC ACTIVITY; MAGNETIC-PROPERTIES; MECHANISM; TRANSPORT; SIZE; LA;
D O I：
10.1080/17458080.2016.1218556
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Bi0.95Nd0.05Fe1-xCrxO3 (x = 0, 0.01, 0.03, 0.05) samples are synthesised by the sol-gel method. The variation in structure, magnetisation, electrical and photocatalytic properties by Cr doping at Fe site in Bi0.95Nd0.05FeO3 samples is analysed. X-ray diffraction pattern confirms the formation of rhombohedral structure in all the samples. The crystallite size is calculated using the Scherrer relation and found to be in nanometre range. Kubelka-Munk theory is used to determine the direct band gap of the samples from reflectance spectra. The saturation magnetisation is found to enhance the concentration of chromium. Arrott-Belov-Kouvel plot confirms the ferromagnetic nature in the samples. The leakage mechanisms are studied to understand the influence of Cr concentration on the BFO. A good correlation exists between the leakage current and ferroelectric behaviour. Photocatalytic tests show degradation of methylene blue dye in the presence of H2O2. A drastic decrease in photocatalytic activity is observed with the concentration of Cr.
引用
收藏
页码：1348 / 1359
页数：12
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