铁氧体

The all raw meal ingredient and all grog ingredient of cordierite and ferrites were prepared,and the composite ceramics was prepared.

用铁氧体生料和堇青石生料的复合及铁氧体熟料和堇青石熟料的复合，制备了堇青石红外辐射复相陶瓷。

Now hausmannite is prepared by electrolyzing manganese metal in our country, thecost of this method is high because of the price of the manganese and the poorof its profitability.

四氧化三锰(Mn_3O_4)是生产软磁铁氧体的重要原料，而铁氧体是一种广泛应用于通信、声像设备、开关电源和磁头工业的软磁材料。

The review includes:(1) magnetic sensor new materials;(2) hexagonal system microwave ferrite materials;(3) large capacity spin valve magnetic memories;(4) magnetic thin tape and film transforms;(5) large power application of ferrite materials.

其内容包括：(1)磁传感器新材料；(2)六角晶系微波铁氧体材料；(3)大容量自旋阀磁存储器；(4)磁薄带和磁薄膜变压器；(5)大功率应用的铁氧体材料。

Ferrite is one kind of soft magnetic material, which is widely used in communication, the audio and video equipment, and magnetic head industry, etc.

四氧化三锰(Mn3O4)是生产软磁铁氧体的重要原料，而铁氧体是一种广泛应用于通信、声像设备和磁头工业的软磁材料。

In this paper, the softmagnetic MnZn ferrite with high saturation magnetization and low loss in three groups ofvarious compositions have been developed by substituting Fe2O3 withrefined iron mine powders . Magnetic properties such as μi , Bs , Ps , Tc and fr were measured and analyzed.

用精铁矿粉制备功率软磁MnZn铁氧体的初步研究何玉平胡国光尹萍何玉平胡国光尹萍摘要：用精铁矿粉代替氧化铁研制了不同配方的高饱和磁感应强度Bs、低功耗的软磁性MnZn铁氧体。

In practice, the ferrite devices work in the frequency range which is far away from the ferromagnetic resonance and the permeability tensor is close to a unit matrix.

由于实际中铁氧体器件工作远离铁磁共振频率，磁导率矩阵接近于单位阵，可以将铁氧体材料的引入看作是一种微扰。

The FDTD with shift operator formulations are derived based on the relative permeability tensor in magnetized ferrite and Maxwell curl equations of anisotropic media.

从磁化铁氧体的相对磁导系数张量和各向异性情形下Maxwell旋度方程出发，推导出外磁场沿任意方向情形下磁化铁氧体电磁散射的SO-FDTD迭代公式。

Meanwhile single factor test and variance analysis method were adopted to analyze the Ra data,and then the grinding surface topography was analyzed.

采用单因素法设计试验方案对铁氧体进行磨削，测量表面粗糙度数据并对其进行方差分析，对铁氧体磨削表面形貌进行观察。

The metal magnetic material was adopted to satisfy EMI resistance equipment in GHz frequency, due to its higher saturation magnetic susceptibility than the ferrite material, lamella structure and higher frequency in Snoek limit than that of the ferrite material.

由于金属磁性材料的饱和磁感应强度高过于铁氧体，微波段的磁导率高，有利于实现薄层化， Snoek极限值所到达的频率高过于铁氧体材料，所以可以采用金属磁性材料来满足GHz频段抗干扰器件的要求。

The differential phase shift changes as the change in the thickness of the ferrite phase shifter is calculatedwith the transcendental equation.

根据超越方程对单环非互易铁氧体移相器的差相移随铁氧体厚度的变化进行了数值计算。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。