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Dielectric Properties of Dual Phase (Cu-Zn-Ni-Mg-Fe)O High Entropy Oxide

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Title Dielectric Properties of Dual Phase (Cu-Zn-Ni-Mg-Fe)O High Entropy Oxide
 
Creator Jha, Anshu K
Gupta, Amit K
Kumari, Priyanka
Shahi, Rohit R
 
Subject High entropy oxide
Solid state synthesis
dielectric properties
Ball-milling
 
Description 133-143
A mixture of spinel and rock-salt phase was synthesized for (Cu-Zn-Ni-Mg-Fe)O HEO High Entropy Oxide (HEO)
through the modified solid-state synthesis and studied for the dielectric properties. Three different (Cu-Zn-Ni-Mg-Fe)O
HEO samples were synthesized by the variation of synthesis parameters, i.e., 10 hour (hr) ball-milling followed by sintering
at 1050 C for 20 hr (10BM-HEO-20), 20 hr ball-milling followed by sintering at 1050 C for 20 hr (20BM-HEO-20) and
sintering for 10 hr (20BM-HEO-10) separately. The synthesized samples were studied for the effect of synthesis parameters
on phase evolution and their correlation with dielectric properties. The volume phase fraction for the spinel and rock-salt
phase changed with the variation of the synthesis parameters. The value of dielectric constant decreased for the sample 10
BM-HEO-20, 20BM-HEO-20 and 20 BM-HEO-10 HEOs due to the synergistic effect of decrease in particle size, volume
phase fraction of spinel phase as well as more distorted unit cells of spinel HEO phase. The value of dielectric loss is in
decreasing trend for 10BM-HEO-20, 20BM-HEO-20 and 20BM-HEO-10 samples. The value of the dispersion factor for
10BM-HEO-20, 20BM-HEO-20, and 20BM-HEO-10 are found to be 1.839, 2.313, and 2.156, respectively. The present
study provides insight the dielectric properties of HEO can be tuned broadly by the change in the synthesis parameters.
 
Date 2024-02-26T09:12:03Z
2024-02-26T09:12:03Z
2024-02
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/63410
https://doi.org/10.56042/ijpap.v62i2.7694
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.62(02) [February 2024]