Impact of Eu3+ ion substitution on structural, magnetic and microwave traits of Ni–Cu–Zn spinel ferrites

Influence of Dy3+ Ions on the Microstructures and Magnetic, Electrical, and Microwave Properties of [Ni0.4Cu0.2Zn0.4](Fe2–xDyx)O4 (0.00 ≤ x ≤ 0.04) Spinel Ferrites

“…[Ni 0.4 Cu 0.2 Zn 0.4 ](Fe 2– x Dy x )O 4 (0.00 ≤ x ≤ 0.04) SFNPs with different Dy 3+ amounts were prepared by the citrate sol–gel auto-combustion technique. 75 , 76 The chlorides and nitrates of Ni 2+ , Zn 2+ , Cu 2+ , Fe 3+ , and Dy 3+ NiCl 2 ·6H 2 O, Zn(NO 3 ) 2 , Cu(NO 3 ) 2 , Fe(NO 3 ) 3 ·9H 2 O, Dy(NO 3 ) 3 , and citric acid (C 6 H 8 O 7 ) were used for nanosized [Ni 0.4 Cu 0.2 Zn 0.4 ](Fe 2– x Dy x )O 4 (0.00 ≤ x ≤ 0.04) SFNPs production. The ratios of the initial components were calculated based on the following equation …”

Sonochemical catalysis as a unique strategy for the fabrication of nano-/micro-structured inorganics

“…Spinel ferrites are promising magnetic materials that are widely used in various fields, so lately, the sonochemical syntheses of novel spinel ferrite nanostructures have become an active research area. [74][75][76][77][78] For example, Almessiere, Slimani and coworkers produced a series of high-purity spinel ferrite compositions via the ultrasonic irradiation, such as [79][80][81][82][83][84][85][86][87][88][89][90][91][92][93] They examined the structural properties, morphological properties, and physical properties (e.g., magnetic traits, optical traits, and electrical traits) of products, and even evaluated their biological characterization for potential anti-cancer and anti-bacterial capabilities. Additionally, they also utilized ultrasonic-assisted approaches to prepare many ferromagnetic 19 (x = 0.00~0.05) hexaferrites, and so on.…”

Polysubstituted High-Entropy [LaNd](Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 Perovskites: Correlation of the Electrical and Magnetic Properties

“…Transition metal ions-based complex oxides are the most important class of magnetic materials. They are widely discussed among researchers and find various practical applications as magnets with high coercivity and remnant magnetization [ 4 , 5 ], as magnetic memory materials [ 6 ], for catalysis [ 7 ], biomedical applications [ 8 , 9 , 10 ] and as electromagnetic absorbers of high-frequency radiation [ 11 , 12 , 13 , 14 ]. Mn-based complex oxides with perovskite structure (or manganites) attract great attention due to strong correlation of the chemical composition, cation ordering, crystal structure peculiarities and unique magnetic, electrical and magnetotransport properties [ 15 , 16 , 17 , 18 ].…”