Phase relations for Fe-Ti-Zr ternary system at 1023K have been investigated by means of diffusion triple together with electron probe microanalysis technique, a series of tie-lines and tie-triangles have been determined and the isothermal section at 1023K has been established, and seven three-phase fields have been figured out. It was found that all of the Fe-Zr and Fe-Ti binary phases show large ternary solubility, and Zr and Ti can substitute for each other to a certain degree. The largest solid solubility of Ti in Fe2Zr and in FeZr3 is about 8.5 at.% Ti and 35.7 at.% Ti, and of Zr in Fe2Ti and FeTi is about 5.6 at.% Zr and 6.3 at.% Zr, respectively. The solubility range of Fe2Ti, FeTi, Fe2Zr and FeZr3 is 64.9 72.7 at.% Fe, 46.6-49.1 at.% Fe, 65.8-71.7 at.% Fe and 20.9-24.3 at.% Fe, respectively. No ternary compound was found.

The isothermal section of the phase diagram of the Co-Ni-Zr ternary system at 1198 K has been investigated by means of diffusion triple and electron microprobe analysis. This isothermal section consists of six threephase regions. The homogeneity ranges of Co23Zr6, Co2Zr, CoZr, Ni5Zr, Ni7Zr2 and NiZr are about 16.7%-18.8 at.%Zr, 28.6%-32.3 at.%Zr, 49.2%-51.7 at.%Zr, 16.0%-18.7 at.%Zr, 22.3%-24.1 at.%Zr and 49.8%-52.1 at.%Zr, respectively; CoZr2 and NiZr2 are nearly linear compounds. The largest olubilities of Ni in Co23Zr6, Co2Zr and CoZr are about 4.9 at.%Ni, 5.4 at.%Ni and 4.5 at.%Ni, respectively. CoZr2 and NiZr2 form a continuous solid solution (Co,Ni)Zr2. No ternary compound is observed.

FeZrN thin films with in-plane anisotropy were deposited on both rigid substrate Si and flexible substrate Kapton by magnetron sputtering. The as-prepared films had the microstructure of nanocrystallites with a small amount of intergranular amorphous phase. The thickness dependent coercivity showed different behaviors for flexible and rigid films. The dynamic magnetic properties of the films have been characterized. Although the high frequency characteristics are closely related to the thickness, composition, and anisotropy, the flexible films have relatively smaller values of real permeability but larger values of ferromagnetic resonance frequency fr than the rigid films. Due to the flexibility, the properties of the flexible films varied with each other. Nevertheless, both rigid and flexible films can find important applications in microwave absorber due to their excellent high frequency properties up to 5 GHz. © 2010 American Institute of Physics. doi:10.1063/1.3337684

采用单辊旋淬法，以不同的轮辊转速(50、40、30和25m/s)制备高Fe含量Fe82.65Cu1.35Si2B14非晶合金薄带，研究了冷却速度对快淬合金结构和性能的影响。结果表明：随冷却速度的降低，淬态Fe82.65Cu1.35Si2B14合金的条带厚度逐渐增大，合金由完全的非晶态结构转变为非晶与纳米晶的混合结构；同时，随冷却速度的降低，一次晶化温度下降，材料的饱和磁感应强度逐渐增加，在轮辊转速为25m/s时，淬态合金的饱和磁感应强度达到1.4T。

以δ-FeOOH为前驱体，采用沸腾回流法直接合成了尖晶石结构的MnZn铁氧体纳米颗粒。用X射线衍射仪（XRD）、透射电镜（TEM）和振动样品磁强计（VSM）对其相成分、显微结构和磁性能进行了表征。详细探讨了共沉淀的pH值和回流反应时间对生成物化学组成和磁性能的影响。结果表明，通过调节pH值和回流时间可以得到从小于10nm到大于20nm不同粒径的锰锌铁氧体颗粒，获得完全产物的最佳回流时间为6h。pH值对反应剧烈程度及磁性能有很大影响，共沉淀pH值为13.0左右时获得的制备态纳米粉末尺寸为20nm，饱和磁化强度达46A·m2/kg。

以市售YF30铁氧体预烧料为基料，采用陶瓷法制备了La-Co掺杂的M型锶铁氧体Sr1－xLaxFe12－xCoxO19（x=0-0.21）。通过X射线衍射和MATEST-2010H永磁（稀土）磁性材料自动测量仪研究La-Co掺杂量对材料结构与磁性能的影响。结果表明，在1210℃烧结时，Sr1－xLaxFe12－xCoxO19（x=0-0.21）均为单一的磁铅石相结构，适量La-Co掺杂明显改善了M型锶铁氧体的内禀磁性能；在1195℃烧结时，Sr1－xLaxFe12－xCoxO19锶铁氧体在x=0.15处获得最佳磁性能：Br=410mT，Hcj=358.0kA/m，(BH)max=32.2kJ/m3。

The effect of a variation in Si and N concentration on the microstructure, crystal structure and high-frequency magnetic properties of Fe-Co-Si-N nanogranular thin films was investigated. The films, prepared by rf magnetron sputtering, consisted of nanosized grains of FeCo as well as a Si and N rich intergranular amorphous phase. The Si concentration had a significant effect on the crystal structure of the FeCo phase. The resistivities of the Fe-Co-Si-N films were significantly enhanced by an increase in Si concentration. The resonant frequency of the Fe-Co-Si-N films could be tuned from 0.45 GHz to 2.1 GHz by controlling Si concentration. The N concentration greatly influenced magnetic properties and the variation in resonant frequency is in agreement with Kittel's equation.

通过湿法预处理，用偶联剂KH-570对羰基铁粉进行表面改性，制备了综合性能较好的并用橡胶基实用型磁敏橡胶，研究了羰基铁粉含量对天然橡胶/丁苯橡胶（NR/SBR）并用橡胶基磁敏橡胶性能的影响；同时利用扫描电镜研究了改性羰基铁粉表面和磁敏橡胶复合材料断面的微观结构。结果表明，通过偶联剂改性的羰基铁粉其晶体结构未发生变化，且表面有一层致密的包覆层；以NR/SBR并用橡胶为基体的磁敏橡胶，当羰基铁粉用量为300份时，可表现出较好的机械性能和磁流变效应。

研究了Terfenol-D材料中巨磁致伸缩的逆效应，即磁机械效应。基于Stoner-Wohlfarth(SW)模型，考虑磁晶各向异性和应力各向异性能，依据自由能极小原理，获得了退磁态下Terfenol-D单晶中磁化强度方向和压应力的关系.采用数值方法求解了平衡条件下的非线性方程组。理论结果表明，Terfenol-D巨磁致伸缩单晶中的磁各向异性取决于磁晶各向异性和应力各向异性之间的竞争。在压应力的作用下，Terfenol-D单晶中的磁各向异性由立方向单轴转变。理论和实验结果的比较表明，存在一个临界压应力，使磁致伸缩效应达到极大值。该理论结果还解释了压应力使得Terfenol-D单晶材料难于磁化和磁致伸缩效应出现极大值的实验事实。理论计算不仅为研究这类问题提供了一个更准确的方法，而且其结果也有助于理解类似材料中的磁化过程。

The Fe–Er binary system has been assessed by combining CALPHAD method with Miedema approach. Liquid is treated as a substitutional solution phase, of which the excess Gibbs energies are modeled by a Redlich–Kister polynomial function. The binary intermetallic compounds are treated as stoichiometric phases. Thermodynamic parameters of various phases have been optimized and the calculated results are in reasonable agreement with experimental data.