Magnetic properties and resonance linewidths of Zr- and Ti-subsituted Ca-V garnet

Neel temperature and ferrimagnetic resonance linewidth measurements were carried out in the composition Y 3-2x-y Ca 2x+y Fe 5-x-y M y V x O 12 , where M=Zr or Ti. It was revealed, that both of the Zr and Ti substitutions in this system reduced the value of K 1 /M s effectively, and this led to the remarkable linewidth reduction. The lowest value of linewidth obtained was 1.8 Oe at the composition of x=0.4 and y=0.4 for M=Zr.