Index of content:
Volume 12, Issue 12, 15 June 1968
12(1968); http://dx.doi.org/10.1063/1.1651873View Description Hide Description
Metal‐to‐metal point contact diodes were used to obtain the 54‐GHz beat notes between two adjacent 10.6‐μ CO2 laser transitions. The speed of the diodes in the far‐infrared is at least 1000 GHz. This was tested with a 337‐μ HCN laser.
12(1968); http://dx.doi.org/10.1063/1.1651875View Description Hide Description
Low frequency noise spectrum and electrical conductivity of a GaAs Gunn diode are presented. Based on these results, we suggest that the observed FMnoise spectrum of Gunn oscillators with −9 dB/octave slope of noise‐to‐carrier ratio may also be due to current fluctuations with l/fcharacteristic resulting from electron trapping.
12(1968); http://dx.doi.org/10.1063/1.1651876View Description Hide Description
When nickel is replaced by cobalt in RbNi1–x Co x F3, the hexagonal structure and the ferrimagnetic order are maintained; however, the easy axis of magnetization at 77°K rotates in a complex manner from perpendicular (x < .07) to parallel to the optic axis (x > .17). In the optical window region at 17,000 cm−1 the bulk absorption remains constant at 5 cm−1 and the Faraday rotation increases to 200 deg/cm at x = .25.