| 摘要 |
Disc resonators, for use in microwave oscillators and filters, comprise monocrystalline A3(- Ga1-pDp)5O12 substrates bearing epitaxial ferrimagnetic Y3Fe5-xMxO12 layers. The difference between the lattice constants a0 of the substrate and layer materials is not more than 0.0003nm. In the above formulae, A is at least one element from group IIIA of the Mendeleev periodic table, D is a non-magnetic ion which is smaller than the gallium ion and occupies octahedral and tetrahedral sites in the garnet lattice, x>0, p>/=0. A does not consist solely of Gd when p = 0. |
