铁氧体

The effects of adding SnO2 or Nb2O5 on the high-permeability MnZn ferrites were studied on the basis of microstructure analysis.

从分析材料微观结构入手，研究了SnO2和Nb2O5掺杂对高磁导率MnZn铁氧体材料性能的影响。

The amorphous gelatin was heated by self-combustion in microwave oven. The burning process of amorphous gelatin was studied by TG-DTG. The products were detected by X-Ray and TEM.

利用热分析研究了干凝胶自燃烧过程，并且利用X衍射、透射电子显微镜研究了pH值、温度、成胶时间以及燃烧温度对MnZn铁氧体的晶体结构、晶体组成和粒径大小的关系。

The principle of capillary tube viscometer was analyzed and the measuring apparatus was built to measure the viscosity of the Mn-Zn ferrite magnetic fluid. The effects of the volume fraction of the suspended magnetic particles, mass concentration of surfactants, temperature and the external magnetic field strength as well as the orientation on the viscosity of the magnetic fluid were analyzed.

分析了毛细管粘度计测量粘度的原理，搭建了磁流体粘度测量实验台，测量了锰锌铁氧体磁流体的粘度，分析了不同磁性粒子体积份额、表面活性剂质量含量、温度以及外加磁场方向和强度等因素对磁流体粘度的影响。

Effects of the technological parameters on the properties of metallized thin film were therefore studied.

本文采用真空溅射技术在镍锌铁氧体表面制备了Cr(150nm)/Ni-Cu(460nm)/Ag(200nm)结构的金属化复合薄膜，从理论和实验上研究分析了溅射工艺参数对于薄膜性能的影响。

It is possible to use four amorphous toroids replace eleven ferrite ones without changing the pulse power system, and the axial length of cell constructed with amorphous toroids can be reduced to 57.5% and the cost of magnitic cores to 42.5% comparried to the constracted with ferrite toroids.

在神龙一号的脉冲功率系统不作改变的情况下使用4块国产非晶磁环替代原组元中的11块铁氧体是可能的。磁芯截面积由360cm~2减小到131cm~2，这样可使组元轴向长度缩短42.5％，磁芯投资减少57.5％。

In this year,it consists of(1) superthin film magnetic material;(2) nano-crystal magnetic alloy;(3) giant magnetoresistive material;(4) spin polarization ;(5) new ferrite and rare-earth compound.

今年综述内容包含：(1)超薄膜磁性材料；(2)纳米晶磁性合金；(3)巨磁电阻材料；(4)自旋极化；(5)新的铁氧体和稀土化合物。

Mn-Zn ferrite nanocrystalline was prepared by solgel auto-combustion process,and the technics was analyzed by means of TG-DTA, FT-IR and XRD.

用溶胶-凝胶自燃烧法制备了 Mn-Zn铁氧体纳米晶体，用TG-DTA，FT-IR和XRD等3种分析方法研究了其制备工艺。

The processes and raw materials of high-purity iron oxide red for soft magnetic ferrite use are analyzed and compared.

本文对软磁铁氧体用高纯氧化铁红制备工艺及所用原料进行了分析和比较，提出了以窑尾灰为原料的新工艺，此工艺简单易行，成本低，适合大规模生产；产品质量符合HG/T2574-1994优等品标准。

The RF choke is around 100uH and could be home-wound with 180 turns of 0.1mm wire on a 1/4 watt resistor of high value : say over 400K. L is wound with 18 turns [5+13] of 0.33mm wire on an 8mm former with ferrite core.

对于大约100uH的RF扼流圈，通过使用0.1mm的线在1/4瓦的高值电阻，如400K欧姆上绕180圈即可得到，L通过使用0.33mm的线在一个8mm样板的铁氧体磁芯上绕18圈即可。

The M-H behavior has displayed a ferromagnetic hysteresis loop with a wasp-waisted shape, which constricted in the middle section, while wider at above and below section.Further, various amount (1, 3, 5%)of NdFeB were mixed with Ni-Zn ferrites. The M-H behavior has shown markedly different coercivity and wasp-waisted hystsresis.

为了进行本研究，在样品制备上系以燃烧合成法制备奈米级镍锌铁氧体软磁磁粉，并与市售微米级铷铁硼硬磁磁粉加以均匀混合，最后压制成软硬磁复合之块材，并经由震荡样品磁性量测仪对软磁、硬磁与复合磁材加以量测以描绘出其磁滞曲线。

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。