Core/shell architecture as an efficient tool to tune DC magnetic parameters and AC losses in spinel ferrite nanoparticles

Magnetic Properties of Fe3O4/CoFe2O4 Composite Nanoparticles with Core/Shell Architecture

“…The results concerning the regularities in the dependences of the core/shell nanoparticle properties on the shell thickness shell , which were obtained in this work and in works [8,26], open the way to a purposeful control over the magnetic parameters of composite nanostructures in various technological and biomedical applications.…”

Coupled hard–soft spinel ferrite-based core–shell nanoarchitectures: magnetic properties and heating abilities

“…15,17,18 Again, the possibility to tune magnetic anisotropy and saturation magnetization has recently found usage in applications based on magnetic heat generation, such as catalysis [19][20][21][22] or magnetic uid hyperthermia (MFH). [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] In this context, the engineering of bi-magnetic coreshell nanoarchitectures with sharp interfaces, homogeneous coating, and low size dispersity for a uniform magnetic response is crucial for maximizing the coupling between the hard and so phases (i.e., the interface) and requests proper synthesis methods able to guarantee a strict control over the composition, structure, and morphology of the particles. [39][40][41][42][43] Isostructural phases with similar cell parameters should ensure epitaxial growth and can be considered the best candidates to build core-shell architectures.…”

“…However, a systematic study of the magnetic parameters inuencing the coupling, as already performed for thin lms, 44 is still lacking for core-shell NPs. Some studies [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] have reported the heating abilities of these systems since Lee et al work in 2011 (Table 7S †). 33 Nevertheless, only a few of them discuss the data based on a large set of samples, 28,31,[35][36][37] and rarely the variation of a single parameter is studied keeping the other unchanged.…”

“…33 Nevertheless, only a few of them discuss the data based on a large set of samples, 28,31,[35][36][37] and rarely the variation of a single parameter is studied keeping the other unchanged. 23,24,30,31,33,35,37,38 More importantly, the undoubted demonstration of the core-shell architecture by nanoscale chemical mapping, 26,32,33 and the actual chemical composition 23,28,32,35,38 are hardly ever provided. All the abovecited aspects are essential as a solid starting point to ascribe the increased efficiency of systems to the exchange-coupled spinel ferrite phases.…”

On the synthesis of bi-magnetic manganese ferrite-based core–shell nanoparticles

“…Again, discording results were discovered when studying the effect of the amount of hard-CoFe 2 O 4 shell in spinel iron oxide@cobalt ferrite systems. In one case, the group of Solopan,90…”