| 摘要 |
PURPOSE:To simultaneously realize a very small half width of ferromagnetic resonance absorption, large residual flux density, and a small dielectric loss by a method wherein a part of the Fe site of a specific YIG ferrite is replaced with Mn, and at the same time, copper oxide and tin oxide are added. CONSTITUTION:In the composition indicated by (Y1-xGdx)w(Fe1-y-zAlyMnz)8-wO12, the composition wherein x, y and z and w are in the range of 0<=x<=0.35, 0<=y<=0.16, 0.01<=z<=0.04 and 3.02<=w<=3.06 is used as the main component, and copper oxide indicated by the form of CuO and the tin oxide indicated by the form of SnO2 of 0.5mol% or more and 2.0mol% or less are added and contained. As a result, a sufficiently small half width of paramagnetic resonance absorption, a sufficiently small dielectric loss and high residual magnetic flux density are given to the above-mentioned material, and as a result, the material which is very useful for the application of the material to the circuit element such as a latching type phase converter, a highly stable isolator and circulator and the like, can be obtained. |
