Gd- and Zr-substituted Ca-V garnets

Polycrystalline garnet of the system Y
3-2x-y-z
Gd
z
Ca
2x+y
Fe
5-x-y
V
x
Zr
y
O
12
was investigated. Relatively temperature-stable magnetization near room temperature and narrow ferrimagnetic resonance linewidth (
\DeltaH 10
Oe) were obtained for the composition range of
0.4 \leq x \leq 0.6, 0.3 \leq y \leq 0.6
and
0.3 \leq z \leq 1.6
respectively. The lowest value of linewidth at z=1.0 was 5.2 Oe at the composition of x=0.4 and y=0.6, which suggests the remarkable reduction of anisotropy.