钴取代的BaNi_2W六角铁氧体

Co Substituted BaNi 2W Hexagonal Ferrites

研究了ＢａＮｉ２－ｘＣｏｘＦｅ１６Ｏ２７（ｘ＝０，０．２，０．２５，０．４，０．４２，０．５，０．８４）六角铁氧体多晶材料的磁特性。结果，取向度大于７５％，介电损耗小于５×１０－３，饱和磁化强度为３６６ｋＡ／ｍ几乎不变，磁晶各向异性场为２００ｋＡ／ｍ≤Ｈａ≤１１４０ｋＡ／ｍ，这类材料可应用于Ｘ至Ｋａ波段的微波器件。

In this paper,The magnetic properties of polycrystalline samples of Ba Ni 2-x Co x Fe 16 O 27 ( x =0,0.2,0.25,0.4,0.42,0.5,0.84)hexagonal ferrites have been investgated. These materials can have high orientation degree ( F >75%) and low dielectric loss ( tg δ ε <5×10 -3 ).Their saturation magnetization is 366A/m.Their magnetocrystalline anisotropy field can be varied from 200kA/m to 1140kA/m.The polycrystalline Ba Ni 2-x Co x Fe 16 O 27 hexagonal ferrites can be used in X and Ka band micrwave devices.