Fabrication, magnetism and high frequency application of exchange-coupled Fe65Co35±2–SiO1.7±0.2 granular films

High-frequency magnetic properties of FeNi3–SiO2 nanocomposite synthesized by a facile chemical method

“…Coating FeNi 3 NPs with amorphous SiO 2 can effectively improve the electrical resistivity of the materials and suppress eddy-current losses in high-frequency operations [24]. Up to now, various methods have been developed to prepare magnetic alloy NPs and their nanocomposites [17][18][19][20]. However, most of them require rigorous conditions, such as high pressure, high temperature, inert atmosphere, vacuum, or H 2 atmosphere, which are inconvenient to operate in practice [25][26][27][28][29][30][31][32][33][34].…”

“…The highfrequency performance of these ferrites is limited by Snoek's law. Therefore, to meet these requirements, magnetic metal/insulator nanocomposites are frequently suggested to be used as materials for high-frequency applications [17][18][19]. By encapsulating magnetic metal nanoparticles with insulating phase, the resistivity of the materials can be dramatically increased.…”

Effect of hydrogen plasma implantation on the micro-structure and magnetic properties of hcp-Co80 57Fe4Ir16 thin films*

“…Soft magnetic thin films (SMTFs) with adjustable high-frequency magnetic properties are highly desirable due to their wide range of applications, such as film inductors, [1,2] micro-transformers, [3] and microwave noise filters, [4,5] etc. Various methods have been proposed for the development of these SMTFs, such as chemical substitution, [6][7][8][9][10] high temperature and high magnetic field annealing, [11][12][13][14][15] crystal texture, [16] and hydrogen ion implantation, [17][18][19][20] etc. Among these methods, hydrogen implantation has been shown to be a powerful platform to tailor the physical properties of both transition metal oxides and various kinds of metal alloys.…”

Electro-infiltration: A method to form nanocomposite soft magnetic cores for integrated magnetic devices

“…Additionally there is ongoing interest to develop point-of-load power converters, wherein microinductors and high-frequency power electronics are monolithically integrated with silicon-based integrated circuits [2]. The development of soft magnetic nanomaterials [3][4][5][6][7][8][9] presents exciting opportunities for realization of new microinductor performance paradigms to address these needs. However, integration of nanomaterials into a microfabrication process flow to realize microfabricated or integrated magnetic components remains an open challenge.…”