On the use of andalusite in “warm” paramagnetic amplifiers

Novel self-sustained modulation in superconducting stripline resonators

“…A theoretical model which attributes the SM to a thermal instability yields a good agreement with the experimental results. A similar phenomenon was briefly reported in the '60s [8][9][10][11] in dielectric resonators which were partially coated by a SC film, but it was not thoroughly investigated and therefore its significance was somewhat overlooked. This phenomenon is of a significant importance as it introduces an extreme nonlinear mechanism, which is by far stronger than any other nonlinearity observed before in SC resonators [12].…”