外加磁场对石榴石铁氧体介电损耗测量值的影响和性能与缺铁量的关系  

Influence of applied magnetic field on the measuring result of delectate loss of garnet and their dependence of properties on the iron deficiency

作　　者：韩志全[1] 张方远 HAN Zhi-quan;ZHANG Fang-yuan(Southwest Institute of Applied Magnetics, Mianyang 621000, China;Dongyang First Magnetics Co, Ltd, Dongyang 322105, China)

机构地区：[1]西南应用磁学研究所,四川绵阳621000 [2]东阳富仕特磁业有限公司,浙江东阳322105

出　　处：《磁性材料及器件》2017年第2期25-27,62,共4页Journal of Magnetic Materials and Devices

摘　　要：用普通陶瓷工艺制备YIGs、YGdIGs和BiCaVIGs等系列石榴石多晶铁氧体,按GB9633(等同IEC60556)标准在10.7GHz下测量了复合石榴石YIGs、YGdIGs和BiCaVIGs的介电常数ε′和介电损耗角正切tanδε,同时也测量了9.37GHz下的铁磁共振线宽DH。比较了加与不加稳恒磁场时ε′和tanδε的测量结果,讨论了加磁场后介电损耗的下降。此外还研究了tanδε和DH与缺铁量的关系,分析了DH最小值对应的缺铁量和tanδε最小值对应的缺铁量不重合的原因。Polycrystalline garnet materials YIGs,YgdIGs and BiCaVIGs were prepared by conventional ceramic process.According to the National Standard GB9633(equal to IEC60556standard)for gyro-magnetic materials,their dielectric constant and the dielectric loss tanδεwere measured at10.7GHz with and without applied magnetic field,and the ferromagnetic resonance linewidth?H was measured at9.37GHz.Results show that,with the applied magnetic field the tanvalues decrease.Its reason was analyzed.The dependences of tanδεandH on the iron deficiency were alsoinvestigated.The difference betweeniron deficiency amounts corresponding to both the minimun tanδεand minimunHwere discussed.

关 键 词：微波铁氧体 介电损耗 旋磁参数测量 石榴石 铁磁共振线宽 缺铁量 

分 类 号：TM277.3[一般工业技术—材料科学与工程]