摘要 |
A method is described for adjusting the temperature coefficient of the ferrimagnetic resonant frequency in gallium or aluminium substituted YIG disc resonators. At the compensation temperature, To, the temperature coefficient of the resonant frequency, fr, in a given frequency range is approximately zero. Where this range lies, depends, inter alia, on the substitution value. By annealing the discs, To can be moved into the desired temperature range. When the manufactured disc has a compensation temperature above the desired temperature range, annealing must be carried out at approximately 850 DEG to 1400 DEG C. When the manufactured disc has a compensation temperature below the desired temperature range, annealing is performed at approximately 400 DEG to 850 DEG C.
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