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The magnetostatic resonance absorptions for an axially magnetized single crystal of YIG rod, [110] oriented, are observed in a waveguide and a cavity at 9.45 GHz. For the applied magnetic field ranging from 2800 to 3400 Oe resonance absorptions due to the dominant and third modes are observed but the second mode is not excited. The separation of these modes is conducted by comparing the transmitted power with the reflected microwave power pattern. For the dominant and third modes the relations between the field deviation, ΔH, from the cutoff field and the standing wave number n for each absorption are in good agreement between the theoretical and experimental values in a wide range of dc magnetic field. When the entire rod is inserted into the center of a waveguide or a cavity only the absorptions due to modes associated with an odd number, n, are observed for both dominant and third modes

It is described how the photon drag voltage in germanium varies with hole concentration and how it depends on temperature. Also some considerations are taken into the following additional contributions similar to the photon drag effect: (1) the Thomson effect, (2) the hot carrier effect and (3) the diffusion effect. Experiments were performed by using a Q-switched CO2 laser. This photon drag effect provides a convenient detector for use with Q-switched CO2 lasers and mode-locked CO2 lasers, because it operates with the high speed response time smaller than 10-10 s at room temperature. In the case of p-type germanium with the resistivity of 2.3 Ω-cm and the size of 1.5×1.5×20 mm3, its responsivity (R) is 3×10-6(V/W) and the detectivity (D) is 1.4×103(W-1) at room temperature and 1.1×104(W-1) at 77 K.

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The magnetic field is represented by the corresponding antisymmetric tensor and the Bethe-Sommerfeld expansion is applied directly to the transport integrals. Hereby the usual division into regions of weak and strong magnetic fields is avoided. It is assumed that a scalar relaxation timedependent only on energy-exists, and that the isoenergetic surfaces are ellipsoids with non-parabolic dispersion. Phonon drag and quantizing effects of the magnetic field are not considered. The results are expressions for the transport tensors with no restrictions on the magnitude or the direction of the magnetic field. They are applied to measurements of Nernst-Ettingshausen effect.