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• W4214928087 endingPage "164405" @default.
• W4214928087 startingPage "164405" @default.
• W4214928087 abstract "The present work reports synthesis, optical, dielectric and electrical properties of M-type BaFe12−xGdxO19 (x = 0, 1, 1.25, 1.5, 1.75 and 2 mol%) ceramics. Auto combustion synthesis technique was applied for the preparation of the ceramics. Structural analysis was done using PXRD patterns which confirms the hexagonal structure of prepared ceramics. The average particle size of the prepared samples was found to be 25.29 nm and the lattices parameters 'a' and 'c' values ranges from 5.8864 Å to 5.9282 Å and 23.2135–23.3981 Å respectively. UV-Visible spectroscopy and Photoluminescence (PL) analysis were used to investigate the optical characteristics of the prepared samples. The PL emission spectra show that the emission peaks were observed at 689 nm due to the optical transition 6GJ to 6PJ emission. The direct band gap (Eg) of BaFe12O19 is 4.07 eV and Eg value decreases from 4.07 eV to 3.92 eV with substitution of Gd3+ ions. The indirect band gap value also decreases with Gd3+ substitution. The electrical properties were investigated through CIS (complex impedance spectroscopy), EMS (electrical modulus spectroscopy), ac-conductivity and dielectric studies. The dielectric behavior of the samples is explained by Maxwell- Wagner’s two-layer model. NTCR behavior of the prepared powder samples are confirmed from CIS studies. The ac-conductivity studies follow the universal power law. By the substitution of Gd3+ ions, the dielectric constant value increases up to four times and value of dielectric loss decreases by four times, so the BaFe12−xGdxO19 samples can be used in various microwave devices." @default.
• W4214928087 created "2022-03-05" @default.
• W4214928087 creator A5015252817 @default.
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• W4214928087 date "2022-06-01" @default.
• W4214928087 modified "2023-10-11" @default.
• W4214928087 title "Optical, dielectric and electrical properties of Gd3+ ions doped barium hexaferrite ceramic compounds for microwave device applications" @default.
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• W4214928087 doi "https://doi.org/10.1016/j.jallcom.2022.164405" @default.
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