Polycrystalline, magnetic ceramic material, microwave magnetic device, and non-reciprocal circuit device comprising such microwave magnetic device
AssigneeHitachi Metals, Ltd.
InventorsHirokazu Nakajima, Hiroyuki Itoh
Life of this patent
Estimating the term…
Abstract
A polycrystalline, magnetic ceramic material having a basic composition represented by the general formula of (Y3-x-y-zBiXCayGdz)(Fe5-α-β-γ-εInαAlβVγZrε)O12, wherein 0.4<x≦1.5, 0.5≦y≦1, 0≦z≦0.5, y+z<1.3, 0≦α≦0.6, 0≦β≦0.45, 0.25≦γ≦0.5, 0≦ε≦0.25, and 0.15 ≦α+β≦0.75 each by an atomic ratio, which is predominantly composed of a phase having a garnet structure, and sinterable at a temperature of 850-1050° C.
Claims5
A polycrystalline, magnetic ceramic material having a basic composition represented by the general formula of (Y3-x-y-zBixCayGdz)(Fe5-α-β-γ-εInαAlβVγZrε)O12, wherein 0.4<x≦1.5, 0.5≦y≦1, 0≦z≦0.5, y+z<1.3, 0≦α≦0.6, 0≦β≦0.45, 0.25≦γ≦0.5, 0≦ε≦0.25, and 0.15≦α+β≦0.75 each by an atomic ratio, which is predominantly composed of a phase having a garnet structure, and sinterable at a temperature of 850-1050° C.
Dependencies are inferred from the claim text.