Structural Rietveld refinement and magnetic features of prosademium (Pr) doped Cu nanocrystalline spinel ferrites

Influence of neodymium substitution on structural, magnetic and spectroscopic properties of Ni–Zn–Al nano-ferrites

“…The calculated values of microwave frequency are 10.6, 9.3, 8.8, and 7.5 GHz for x = 0.00, x = 0.05, x = 0.075, and x = 0.1, respectively. Actually, the obtained microwave frequency values for our samples are comparable and even much bigger than some systems used for high-frequency microwave applications noting Pr doped Cu nanoferrites (from 5.2–9.5 GHz) 64 and Al doped spinel nanoferrites (6–7 GHz). 65 Thus, we can affirm that the studied samples can be good candidates for high-frequency microwave applications.…”

“…To probe if our samples can be useful for high-frequency microwave applications, it is essential to have available materials with a high microwave frequency value. 19,64 The microwave frequency (u m ) was calculated by the given equation:…”

Magnetic and spectroscopic properties of Ni–Zn–Al ferrite spinel: from the nanoscale to microscale

“…Further, the u m values were comparable to those found in other ferrite systems that are considered potential candidates for the applications in microwave frequency bands. 97,98 Electron spin resonance analysis annealed samples. The X-band ESR spectra of the Ni-Zn-Al ferrite nanoparticles with different crystallite sizes at room temperature are shown in Fig.…”

Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants

“…Additionally, iron oxide of the spinel structure was doped with lanthanide ions, i.e., Sm, Eu, and Gd, to boost the magnetic behavior [29]. Akhtar et al stated that Pr-doped copper spinel ferrite can be a suitable material for the use in microwave and memory devices and for high frequency applications [30]. Although reports on REMs-doped spinel ferrites concentrated on their magnetic performances [16,29,30], Ahmed et al pointed REMs-doped spinel ferrites to be attractive adsorbents for colored wastewater treatment [31].…”

“…Akhtar et al stated that Pr-doped copper spinel ferrite can be a suitable material for the use in microwave and memory devices and for high frequency applications [30]. Although reports on REMs-doped spinel ferrites concentrated on their magnetic performances [16,29,30], Ahmed et al pointed REMs-doped spinel ferrites to be attractive adsorbents for colored wastewater treatment [31]. The La-doped zinc aluminate spinel revealed catalytic activity towards transesterification reaction [23].…”