物理学报2012，Vol.61Issue(16)：433-436,4.
中频磁脉冲处理Fe52Co34HfTB6Cu1非晶合金的正电子湮没研究
Investigation of positron annihilation in Fe52Co34HfTB6Cu1 amorphous alloy treated by intermediate frequency magnetic pulse
摘要
Abstract
The effect of intermediate frequency magnetic pulse treatments on Fe52Co34HfTB6Cu1 amorphous alloy prepared by melt-spun technique is investigated. The microstructure and structural defects of the treated specimens are investigated by TEM, Mossbauer spectroscopy and position annihilation lifetime spectra. The results show that the treated specimens by intermediate frequency magnetic pulse are partially crystallized, the content of the crystallization phase increases with the increase of the magnetic pulse frequency, and the crystalline volume fraction is 33.1% at a frequency of 2000 Hz. For the as-quenched amorphous alloy, the annihilation lifetime T1 is 150.5 ps in the monovacancy-like free volume, and the relative intensity 11 is 77.7%. The annihilation lifetime t2 is 349.7 ps in the microvoid, and the relative intensity j2 is 22.3%. With the increase of the magnetic pulse frequency, the values of t1 and T2 of the treated specimens decrease, I1 increases, I2 and I2 decrease compared with the as-quenched amorphous alloy.关键词
Fe52Co34HfTB6Cul非晶合金/中频磁脉冲/正电子湮没寿命/结构与结构缺陷Key words
Fe52Co34Hf7B6Cu1 amorphous alloy/intermediate frequency magnetic pulse/positron annihilation lifetime/structure and structural defects分类
数理科学引用本文复制引用
张艳辉,李彦龙,谷月,晁月盛..中频磁脉冲处理Fe52Co34HfTB6Cu1非晶合金的正电子湮没研究[J].物理学报,2012,61(16):433-436,4.基金项目
国家自然科学基金（批准号：50771025）和辽宁省博士启动基金（批准号：201120010）资助的课题. （）
