Abstract
Microwave ferrites with low microwave loss and strong magnetoelectric (ME) or magnetodielectric (MD) effect are of great importance for real time tunable microwave devices used in modern communication systems among other applications. In this work, the crystalline structure, static magnetic characteristics, microwave electromagnetic properties and microwave magnetodielectric effect in polycrystalline YbxY3-xFe5O12(x = 0∼3) ceramics have been systematically analyzed. The maximum MD response was measured to be -3.29%∼+2.9% at 2–8 GHz under an applied DC magnetic field, H, of 1650 Oe. The experimental results reveal that the microwave magnetodielectric behaviors of Yb-doped YIG ceramics will be influenced comprehensively by variations in crystal structure resulted from Yb substitution, which is interpreted in terms of energy conversion model. We believed the present work will prove enabling to further understand and lead to more effective applications of the ME/MD effect.
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