摘要
５７Ｆｅ、１２Ｃ离子先后注入到多晶ｃｕ片中，由内转换电子穆斯堡尔谱观察注入离子的退火动力学过程，发现经５００℃退火后生成Ｆｅ的纳米颗粒，又透射电子显微镜观察到该颗粒尺寸为２５ｎｍ左右，它们在２８１Ｋ和液氮温度时的矫顽力分别为１１５０Ｏｅ和３７０Ｏｅ。
Abstract The iron nano-particles[α-Fe] were forrned by coimplanted 57Fe and 12Cin Cu after annealing at 500℃ for 30m. The dose and energy of implanted 57Fe were 5× 10”16at/cm2 and 80KeV respectively,and 1×10 17at/cm2 and 20KeV for 12 C respectively.The ther-mal dynamics of Fe atoms was monitored by CEMS.The size of iron particles which is about25nm in diameter was measured by TEM,The coercive fOr ces of the α-Fe which are 1150 Oeand 370 Oe,respectively at RT and 80K were found by vibrating sample magnetometer.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
1995年第S1期297-300,共4页
Chinese Journal of Scientific Instrument
