期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 197, 期 -, 页码 36-42出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2015.03.008
关键词
Barium hexaferrite; Nickel ferrite spinet; Thick films; Heterostructures; Microwave resonance components
An investigation of the composite alpha-Al2O3 dielectric resonator-thick ferrite film heterostructures magnetic field tunable microwave properties has been conducted. Thick high-density high-quality NiFe2O4 spinel and M-type hexaferrite BaFe12O19 films were deposited on the surface of the dielectric by tape-casting technique. Specific organic suspensions for ferrite films synthesis were developed; optimal conditions for pre-heat treatment and annealing have been defined. It was found, that magnetic field has a profound impact on microwave transmission characteristic of composite resonator, including peak absorption level and unloaded Q-factor. Both effects were attributed to increase of the magnetic part of the composite resonator internal losses at frequencies close to ferromagnetic resonance. Since qualitatively similar results were obtained for both cm-wave (with nickel ferrite) and mm-wave (with barium hexaferrite) resonators, the proposed methdd of electronic control over dielectric resonator properties can be successfully utilized in a very broad frequency range, basically, from few GHz to more than 100 GHz. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据