Magnetoelectric composites yNi_1−xCd_xFe₂O₄ + (1 − y)Ba_0.8Sr_0.2TiO₃ (x = 0.2, 0.4, 0.6; y = 0.15, 0.30, 0.45) were prepared by solution-combustion synthesis and characterized by XRD, SEM, and MW measurements. Low MW transmittance (about 0.15) was obtained at f = 8.5 GHz for composites with x = 0.6, y = 0.45. The MW reflectance did not show any dependence on Cd content x. The MW absorptivity levels-off at higher f. A maximum value of dielectric constant (about 42.6) is observed at f = 8.5 GHz for composites with x = 0.6, y = 0.45. Our composites seem promising for use in tunable microwave devices.

中文翻译：

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磁电复合材料y Ni 1-x Cd x Fe 2 O 4 +（1- y）Ba 0.8 Sr 0.2 TiO 3（x = 0.2，0.4，0.6; y = 0.15，0.30，0.45）：固溶燃烧合成及微波性能

通过溶液燃烧合成制备了磁电复合材料y Ni _{1- x} Cd _x Fe ₂ O ₄ +（1- y）Ba _0.8 Sr _0.2 TiO ₃（x = 0.2，0.4，0.6; y = 0.15，0.30，0.45）通过XRD，SEM和MW测量进行表征。对于x = 0.6，y = 0.45的复合材料，在f = 8.5 GHz时获得了低MW透射率（约0.15）。MW反射率不显示对Cd含量x的任何依赖性。较高的f下MW吸收率趋于平稳。对于x = 0.6，y = 0.45的复合材料，在f = 8.5 GHz处观察到介电常数的最大值（约42.6）。我们的复合材料似乎有望用于可调谐微波设备。