Magnetic properties of nanocrystalline nickel incorporated CuO thin films

•High quality Ni-doped CuO films is synthesized by sol-gel technique.•Ni2+ atomic concentration was found to dominate the magnetic property.•The magnetization increases with Ni inclusion in CuO lattice. CuO films were deposited on fused silica substrates by using sol-gel method. Nanocrystalline nick...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2019-06, Vol.479, p.59-66
Main Authors: Dolai, S., Sarangi, S.N., Hussain, S., Bhar, R., Pal, A.K.
Format: Article
Language:English
Subjects:
Coercivity
Copper oxides
CuO
DMS
Energy dispersive X ray spectroscopy
Field emission microscopy
Fused silica
Magnetic properties
Magnetization
Nanocrystals
Nickel
Photoelectrons
Raman spectroscopy
Scanning electron microscopy
Silicon dioxide
Sol-gel processes
Spectrum analysis
SQUID
Substrates
Superconducting quantum interference devices
Thin films
X ray photoelectron spectroscopy
X-ray diffraction
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Summary:•High quality Ni-doped CuO films is synthesized by sol-gel technique.•Ni2+ atomic concentration was found to dominate the magnetic property.•The magnetization increases with Ni inclusion in CuO lattice. CuO films were deposited on fused silica substrates by using sol-gel method. Nanocrystalline nickel was incorporated in CuO in varying concentrations to form Ni:CuO films. Field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDAX), X-ray diffraction (XRD), and Raman spectroscopy measurements were carried out to characterize the films. X-ray photoelectron spectroscopy (XPS) studies indicated that Ni ions successfully substituted Cu in the CuO lattice. Superconducting quantum interface device (SQUID) measurements were carried out to measure the magnetization of the films which decreased with increase in temperature. Coercive field and residual magnetization in the Ni:CuO films were measured as a function of nickel content in the CuO films.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2019.02.005