Application of Ferrite Nanomaterial in RF On‐Chip Inductors

Abstract

Several kinds of ferrite-integrated on-chip inductors are presented. Ferrite nanomaterial applied in RF on-chip inductors is prepared and analyzed to show the properties of high permeability, high ferromagnetic resonance frequency, high resistivity, and low loss, which has the potential that will improve the performance of RF on-chip inductors. Simulations of different coil and ferrite nanomaterial parameters, inductor structures, and surrounding structures are also conducted to achieve the trend of gains of inductance and quality factor of on-chip inductors. By integrating the prepared ferrite magnetic nanomaterial to the on-chip inductors with different structures, the measurement performances show an obvious improvement even in GHz frequency range. In addition, the studies of CMOS compatible process to integrate the nanomaterial promote the widespread application of magnetic nanomaterial in RF on-chip inductors.

Tuning the Magnetic and Catalytic Properties of Manganese Ferrite through Zn2+ Doping: Gas Phase Oxidation of Octanol

“…SFNPs can be used for novel synthetic processes due to their unique magnetic properties under the protocol of green chemistry. The exhibition of dielectric and magnetic properties makes the application of SFNPs more diversified, including chemical and electronic applications and communication devices, such as computer memory chips, antennas, converters, inductors, and frequency filter coils in mobile boasters and radio centers [10][11][12]. SFNPs are frequently used in the biomedical field, magnetic resonance imaging, supercapacitors, sensing of DNA and RNA, and hyperthermia [13][14][15].…”

Ferrite Magnetic-Anisotropy Field Effects on Inductance and Quality Factor of Planar GHZ Inductors

“…In an effort to address the low Q factor, multilayered magnetic films [3][4][5] or high-resistivity ferrites (ρ > 1 kΩ·cm) [6][7][8][9] were used in integrated inductors to suppress GHz eddy current loss. A FeGaB/Al 2 O 3 multilayer solenoid inductor showed an L-density of 15 nH/mm 2 and Q factor of 14 at 1.2 GHz [4].…”