Triethylene glycol stabilized MnFe2O4 nanoparticle: Synthesis, magnetic and electrical characterization

New approach towards the polyol route to fabricate MFe2O4 magnetic nanoparticles: The use of MCl2 and Fe(acac)3 as chemical precursors

“…The maximum magnetization values are high and close to the bulk material for all the cases [26][27][28], but because the finite size effect and a possible different internal order of the nanocrystals, it is expected a difference respect to the M s of the bulk [29]. In addition, the data extracted agree with a soft magnetic behavior for all the nanoparticles produced, fact predicted for the ferrite structure.…”

Synthesis and magneto-electrical properties of MFe2O4 (Co, Zn) nanoparticles by oleylamine route

“…The increase in conductivity with increasing temperature is certainly due to the increase in drift mobility of the charge carriers which is a strong indication for semiconducting nature of the samples. The emergence of two distinct regions at low and high temperatures has been already observed in literature [43,44,46]. The σ dc curves of CoFe 2 O 4 @OAm NPs exhibits Arrhenius behavior before and after transition zone with two values of the activation energy, E a1 = 0.435 eV and E a2 = 0.285 eV.…”

Polyol synthesis of Mn3+ substituted Fe3O4 nanoparticles: Cation distribution, structural and electrical properties

“…Theoretically, four absorption bands denoted as m 1 > m 2 > m 3 > m 4 are predicted to be observed in the infrared spectra of the cubic spinels [35]. m 1 ($552 cm À1 )and m 2 ($430 cm À1 ) bands are due to the intrinsic vibrations of tetrahedral and octahedral metal-oxygen complexes, respectively [36][37][38]. As it was shown in Fig.…”