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5篇 您的检索式:作者名="S.METHFESSEL"
    题名 作者 年代 出处 被引量
1非晶Nd_3Fe_(81)B_(16)合金的晶化及其对磁性和Mssbauer谱的影响显示文摘本文报道利用单辊方法制备的非晶Nd_3Fe_(81)B_(16)合金的晶化及其对磁性和Mossbauer谱的影响。发现在非晶Fe_(81)B_(19)合金中用3at%Nd取代B,使非晶Fe_(81)B_(19)合金的晶化温度提高88℃。在适当的退火条件下晶化后样品在室温下的磁性是:σ_2=189emu/g,σ_r/σ_5=0.7,_iH_c=2.15kOe,B_r≈12kG,_bH_c=2kOe,(BH)_(max)≈8MGOe。与目前广泛使用的六角铁氧体相比,_bH_c相近,但B_r和(BH)_(max)远比六角铁氧体高。这种材料仅含有少量的Nd,因此可能开发为一种新的廉价永磁材料。本文对少量Nd的添加对非晶FeB合金的晶化温度,磁性和Mossbauer谱的影响进行了讨论。初步探讨了高矫顽力的来源,认为它的磁化和反磁化过程可以用畴壁钉扎理论解释。顾本喜 翟宏如 沈保根 S.Methfessel 1989物理学报1989,38,12:1
2MAGNETIC PROPERTIES OF HEAT TREATED Nd_(3)Fe_(81)B_(16) ALLOY显示文摘The hysteresis loop and Mdssbauer spectrum of the heat treated Nd_(3)Fe_(81)B_(16) alloy ribbons annealing at 660℃ for lOmin.have been measured.A coercive field of about 2kOe and an energy product of about 8MGOe are obtained at room temperature.X-ray diffraction and Mdssbauer spectrum analyses show that the high coercivity may originate from the Fe_(3)B phase containing Nd.The value of remanence and energy product in this alloy are much higher than those of anisotropic BaFe_(12)O_(19) ferrite.It may be used as a cheap permanent magnet.顾本喜 翟宏如 沈保根 S.Methfessel 1989Chinese Physics Letters1989,6,5:0
3MAGNETIC MOMENT AND CURIE TEMPERATURE OF AMORPHOUS (Fe_(100-x)B_(x))_(88)Nd_(12±ε) ALLOYS显示文摘The magnetization curves at 1.5K and Curie temperature of amorphow (Fe_(100-x)B_(x))_(88)Nd_(12±ε) alloys were measured.Their spontaneous magnetizations is explained by a noncollinear structure.The average magnetic moment μ_(Fe) per Fe atom decreases monotonically with increasing x,and becomes more rapid when x>24.The B content dependence of Curie temperature shows a mazimum at x=15.At x<15,the increase of T_(c) with x may be attributed to the indirect exchange interactions between Fe-Fe atoms.SHEN Baogen ZHAO Jiangao ZHANG Zhiying GU Benxi DING Jun HHomburg S.Methfessel 1990Chinese Physics Letters1990,7,2:0
4MAGNETIC ANISOTRIPY IN SPUTTERED NdFeB FILMS显示文摘The amorphous and crystalline NdFeB films were prepared by RF sputtering at differentsubstrate temperatures.The crystalline specimens,prepared at 600℃ have strong perpendicu-lar anisotropy and high coercivity.And the cystallized alloy from amorphous state also hasstrong perpendicular anisotripy.Gu Benxi Zhai Hongru Nanjing University,Nanjing,ChinaH.Homburg S.Methfessel Ruhr-University Bochum,Germany 1992Acta Metallurgica Sinica(English Letters)1992,5,8:0
5溅射NdFeB薄膜合金的磁各向异性显示文摘用RF溅射方法在不同的基片温度下制备了非晶态和晶态NdFeB溥膜合金。研究了薄膜合金的磁各向异性。在600℃溅射得到的晶态样品具有强的垂直各向异性和高的矫顽力。由非晶态晶化得到的晶态合金也呈现了较强的垂直各向异性。顾本喜 翟宏如 H.HOMBURG S.METHFESSEL 1991金属学报1991,27,5:0
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