Influence Of High-frequency Field Research Articles

Hysteresis Loops of Recording Media Grains Under the Influence of High-Frequency Fields

Hysteresis loops of single grains and recording media were calculated under the influence of high-frequency (HF) magnetic fields, similar to those produced by a spin-torque oscillator (STO) in microwave-assisted magnetic recording (MAMR). The effect of the HF field ellipticity and the strength of magnetostatic interactions between grains were investigated. Elliptical HF fields with a major:minor axis ratio of 6:1 were almost as effective as circular HF fields in reducing the media coercivity. For media with a small grain pitch, i.e., strong magnetostatic interactions between grains, the HF field was able to reduce the coercivity by much more than when the grains were far apart, and magnetostatic interactions were weak.

Influence of High-Frequency Field on the Combustion of an Acetylene – Air Mixture

THE investigation of the processes of the combustion of gas mixtures in a high-frequency electric field by Haber1 and later by A. Malinowski and ourselves2 led to the conclusion that the influence of a high-frequency field (106 sec.1) in reducing combustion velocity is approximately half that of a constant electric field of the same strength acting under similar conditions.