Role of Ni doping in magnetic dilution of Fe sublattice and in tailoring optical properties of CoFe2O4

被引：14
作者：
Lone, Gulzar Ahmad [1 ]
Ikram, Mohd [1 ]
机构：
[1] NIT Srinagar, Dept Phys, Solid State Res Lab, Srinagar 190006, J&K, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 934卷
关键词：
M-H Loops; FC-ZFC Magnetization curves; Mossbauer Spectroscopy; ELECTRICAL-PROPERTIES; CATION DISTRIBUTION; SPINEL; MN; NANOCRYSTALS; TEMPERATURE; NANOSCALE; COPPER;
D O I：
10.1016/j.jallcom.2022.167891
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The magnetic measurements of the prepared samples of CoFe2-xNixO4 were investigated by SQUID-VSM. We observed a decrease in the coercive field on increasing the doping content, attributed to lower magneto-crystalline anisotropy of dopant Ni2+ than that of the host Fe3+. Also, the merging of FC-ZFC curves ap-proximately at 300 K for all the three samples predicts that the samples are ferrimagnetic up to 300 K. Two sextets can be seen in the Mossbauer spectroscopy, which also indicates that the samples are ferrimagnetic in nature. The bandgap energy calculated from Tauc-plots for pristine and doped samples was found to vary between 2.16 and 2.30 eV. The present bandgap values show the semiconducting behavior of pristine and Ni-doped cobalt spinel ferrite. Therefore, a variety of semiconductor device applications can make use of this material.(c) 2022 Elsevier B.V. All rights reserved.
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页数：7
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