纳米软磁合金Fe_(76.5-x)Cu_(1.0)Nb_xSi_(13.5)B_(9.0)界面非晶相的穆斯堡尔研究  

M O ¨SSBAUER STUDY OF AMORPHOUS INTERGRANULAR PHASE IN NANOCRYSTALLINE SOFT MAGNETIC Fe 76.5- x Cu 1.0 Nb x Si 13.5 B 9.0 ALLOYS

作　　者：金慧娟[1] 张延忠[1] 许桂琴[1] 杨燮龙[2] 

机构地区：[1]上海钢铁研究所研究中心上海市金属功能材料重点实验室 [2]华东师范大学

出　　处：《功能材料与器件学报》1998年第4期236-242,共7页Journal of Functional Materials and Devices

摘　　要：主要采用穆斯堡尔谱学方法，研究了非晶晶化法制备的Ｆｅ７６．５－ｘＣｕ１．０ＮｂｘＳｉ１３．５Ｂ９．０（ｘ＝１，３，５和７）纳米晶合金中界面非晶相的显微结构。用穆斯堡尔热扫描技术测定了残余非晶相的磁有序温度Ｔｃ。观察到非晶合金的晶化温度，磁有序温度和平均磁超精细场有规律性的变化。分析了纳米晶粒通过磁相互作用对界面非晶相的影响以及Ｎｂ在该系列合金中所起的作用。The microstructures of amorphous intergranular phase in nanocrystalline Fe 76.5- x Cu 1.0 Nb x Si 13.5 B 9.0 (x=1,3,5 and 7) alloys, formed by partially crystallizing amorphous ribbons upon annealing, have been investigated by means of M o ¨ssbauer spectroscopy. The magnetic ordering temperature T c of the residual amorphous phase were determined by M o ¨ssbauer thermal scan method. The regular variation of crystallization temperature, magnetic ordering temperature and average hyperfine magnetic field of the amorphous alloys with Nb content were observed. The effect of nanocrystalline grains on amorphous intergranular phase through magnetic interactions and the effect of Nb in these alloys were analysed.

关 键 词：纳米软磁合金 界面非晶相 穆斯堡尔谱 

分 类 号：TM271.2[一般工业技术—材料科学与工程] TG139[电气工程—电工理论与新技术]