High frequency characteristics of (Ni
75
Fe
2
)
x
(ZnO)
1−
x
granular thin films with tunable damping coefficient
*
Li Wen-Chun
a)
, Zuo Ya-Lu
b)
, Liu Xiao-Hong
a)
, Wei Qing-Qing
a)
, Zhou Xue-Yun
c)
, Yao Dong-Sheng
a)†
The volume fraction ( x ) dependence of damping factor α and frequency linewidth Δ f .