The influence of hafnia and impurities (CaO/SiO2) on the microstructure and magnetic properties of Mn–Zn ferrites

Development of MnZn ferrites by combinatorial synthesis and high throughput screening method

“…In our experiments, chemical composition, additives and sintering temperatures are regarded as the much important processing parameters [2][3][4][5]. According to the following technical route as shown in Fig.…”

Synthesis, structure and magnetic properties of nanocrystalline ZnxMn1−xFe2O4 prepared by ball milling

“…However, with the development of science and technology, the Mn-Zn ferrites have to become higher performance and smaller size. The interests in soft magnetic materials are therefore turned into their nanocrystallization and ion substitutions for expecting to improve their combination properties [5]. Since the nanomaterials are of the particular physical and chemical properties different from those of bulk materials obtained through conventional methods [6,7], the nanocrystallization of Mn-Zn ferrites is also a prosperous method to excavate the potential of conventional soft magnetic ferrites.…”

Effects of SiO2 addition on microstructure and magnetic properties of NiZn ferrites prepared by SHS

“…By adding SiO 2 , average grain size and magnetic permeability increase [11]. The initial permeability values of ferrites containing SiO 2 are higher than that without containing SiO 2 [12].…”

“…The additives could improve magnetic properties (such as magnetic permeability, eddy current loss, hysteresis loss) and/or electrical properties by different mechanisms: (1) segregation to the grain boundaries and affecting the grainboundary resistivity, (2) dissolution into the grains and altering the magnetic properties, and (3) affecting the microstructure development for example by liquid-phase sintering [8]. Among these additives, SiO 2 has an important effect on the microstructure and magnetic properties of ferrites [8][9][10][11][12][13]. By adding SiO 2 , average grain size and magnetic permeability increase [11].…”