Facile synthesis and high temperature ferromagnetism in Ni-ZnO microflowers

In this work, we report the high temperature ferromagnetism of nickel doped zinc oxide (Ni-ZnO) microflowers, which were prepared by simple sol-gel method. X-ray diffraction pattern of Ni-ZnO microflowers shows the hexagonal wurtzite crystal structure similar to ZnO structure. X-ray photo electron s...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2019-09, Vol.569, p.31-35
Main Authors: Shukla, Prakhar, Shukla, Jitendra Kumar
Format: Article
Language:English
Subjects:
Crystal structure
Diffraction
Diffraction patterns
Ferromagnetic phases
Ferromagnetism
Field emission microscopy
High temperature
Magnetic materials
Magnetism
Nickel
Sol gel preparation
Sol-gel processes
Temperature effects
Wurtzite
XPS
Zinc oxide
Zinc oxides
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Summary:In this work, we report the high temperature ferromagnetism of nickel doped zinc oxide (Ni-ZnO) microflowers, which were prepared by simple sol-gel method. X-ray diffraction pattern of Ni-ZnO microflowers shows the hexagonal wurtzite crystal structure similar to ZnO structure. X-ray photo electron spectroscopy of Ni-ZnO microflowers indicates the presence of all elements. Field emission electron microscopy (FESEM) reveals the flower like structure of Ni-ZnO composite quite different from ZnO structure which possess flakes and rods. Both ZnO and Ni-ZnO structure exhibit the soft ferromagnetic behavior. The optical absorption measurement shows the red shifting with respect to ZnO after the Ni doping in ZnO structure. From the magnetization measurements, the coexistence of two ferromagnetic phases in the Ni-ZnO composite were observed.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2019.05.028