高能氩离子在钇铁石榴石中引起的非晶化研究  

Investigation of amorphization in yttrium iron garnet irradiated by high energy As ions

作　　者：金运范[1] 权晶明 徐荣辉[1] 孙友梅[1] 王志光[1] 马峰韩劲 刘刚[1] 刘杰[1] 李长林[1] 

机构地区：[1]中国科学院近代物理研究所

出　　处：《核技术》1996年第1期1-4,共4页Nuclear Techniques

基　　金：国家自然科学基金;中国科学院八五重点资助

摘　　要：用倾斜样品Ｘ射线衍射学（ＳＴＤ）和饱和磁化强度测量，研究了９６０ＭｅＶ氩离子在多晶钇铁石榴石（ＹＩＧ）Ｙ３Ｆｅ５Ｏ１２中引起的非晶化过程。分析结果表明，９６０ＭｅＶ氩离子辐照引起ＹＩＧ晶态→非晶态转变是一个逐渐的过程，在这个过程中电子能损起主导作用，但也需要一定的辐照剂量．并在电子能损为８．３ＭｅＶＩ／μｍ处首次观察到了几乎完全的非晶态。Amorphization of yttrium iron garnet (YIG)Y3Fe5O12 induced by the irradiation of 960 MeV Ar ions at 195±0.1K has been investigated by means of the sample-tilting X-ray diffraction(STD) and the saturation magnetization measurement. It is indicated that the transformation of crystalline tO amorphous state is a gradual process in which the electronic stopping power S. plays a dominant role,and a certain dose is necessary. A nearly complete amorphous state was observed at Se= 8.3MeV/μ m.

关 键 词：非晶化 钇铁石榴石 氩离子 铁氧体 

分 类 号：TM277.3[一般工业技术—材料科学与工程]