New nanosized (Gd3+, Sm3+) co-doped zinc ferrite: Structural, magnetic and first-principles study

Facile Synthesis of Polyindole/Ni1–xZnxFe2O4(x= 0, 0.5, 1) Nanocomposites and Their Enhanced Microwave Absorption and Shielding Properties

“…This T B is very sensitive to the grain size distribution and indicates the transition between the superparamagnetic state ( T > T B ) and the blocked state ( T < T B ) within the nanoparticle systems. Figure a also shows strong irreversibility between FC and ZFC curves, as indicated by the presence of large bifurcation between them, which hints toward the strong exchange interactions associated with the particles in the system . Such irreversible behavior originates from the blocking of the magnetization orientation by an anisotropic barrier within the system.…”

“…Figure 7 a also shows strong irreversibility between FC and ZFC curves, as indicated by the presence of large bifurcation between them, which hints toward the strong exchange interactions associated with the particles in the system. 32 Such irreversible behavior originates from the blocking of the magnetization orientation by an anisotropic barrier within the system. The increase in zero field-cooled magnetization ( M FC ) with decreasing temperature below T B is also evidence of high magnetocrystalline anisotropy in the NF system, and the large FC magnetization reveals that strong ferrimagnetism occurs in the NF nanoparticles.…”

“…22 More significantly, the salient potential of the conductive polymers in anticorrosive coatings, 23 energy storage, electrochemical supercapacitors, 24 sensing, 25 environmental remediation, 26 antimicrobial properties, water treatment, 27 and energy recovery fields has boosted their significance. In recent years, researchers have had a great interest in spinel ferrite nanoparticles due to their extensive applications in gas sensing, 28 inductors, 29 biosensing, 30 sequestration of lanthanides and actinides from aqueous solutions, 31 telecommunications, 32 and hyperthermia applications in cancer therapy. 33 Magnetic nanoparticles such as Fe 3 O 4 , 34−36 ZnFe 2 O 4 , 36,37 NiFe 2 O 4 , 38−40 and (NiZn)Fe 2 O 4 41,42 are wellknown traditional microwave absorbers, proven to have significant magnetic loss properties.…”

“…In recent years, researchers have had a great interest in spinel ferrite nanoparticles due to their extensive applications in gas sensing, inductors, biosensing, sequestration of lanthanides and actinides from aqueous solutions, telecommunications, and hyperthermia applications in cancer therapy . Magnetic nanoparticles such as Fe 3 O 4 , − ZnFe 2 O 4 , , NiFe 2 O 4 , − and (NiZn)­Fe 2 O 4 , are well-known traditional microwave absorbers, proven to have significant magnetic loss properties.…”

Impact of rare earth oxide on ZnFe2O4: structural, magnetic properties, and hyperthermia efficiency

“…Therefore, the magnetic characteristics of the ZF nanoparticle and ZF/RE are controlled by the particle size. Table 3 shows a comparison between the present works and numerous of other works [54][55][56][57][58][59][60][61][62] related to the effect of the method of preparation, and the doping or mixing, or replacing of ZF on the particle size, and the magnetic properties of ZF. From table 3 we can say that the value of M S and H C of ZF depends on both the method of preparation and the average particle size.…”