Magnetic properties of polycrystalline gadolinium calcium vanadium and indium substituted YIG

The gadolinium garnet system {Gd
z
Y
3-2x-z
Ca
2x
} [Fe
2-y
In
y
] (Fe
3-x
V
x
)O
12
was investigated as a function of x, y, and z for
0 \leq x \leq 0.6, 0 \leq y \leq 1.0
, and
0 \leq z \leq 2.4
. The relationships between their compositions and magnetic properties were clarified. It was shown that some combinations of components in this system displayed improvements with respect to temperature stability (
\alpha = 0.05
%/°C
-20 \sim 60 \deg
C) and ferromagnetic resonance linewidth (ΔH = 20 ∼ 30 Oe) as compared with conventional garnets.