^(56)Fe^(13+)离子引起GaP晶体的微结构损伤  

Misconstructural Damage of GaP Crystal Irradiated by ^(56)Fe^(13+)

作　　者：陈晓旭 孙爱民 宋银[2] 张崇宏[2] 杨义涛[2] 

机构地区：[1]西北师范大学物理与电子工程学院甘肃省原子分子物理与功能材料重点实验室,兰州730070 [2]中国科学院近代物理研究所,兰州730000

出　　处：《原子核物理评论》2017年第4期811-814,共4页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(1103Y623010);中国科学院"西部之光"人才培养引进计划资助项目(29Y523020)~~

摘　　要：利用X射线衍射(XRD)技术、傅里叶变换红外光谱(FTIR)和Raman光谱对经不同剂量的^(56)Fe^(13+)离子辐照的Ga P晶体的微结构进行了表征。结果表明:随着辐照离子剂量的增加,Ga P晶体中产生了局部的无序与缺陷。随着^(56)Fe^(13+)离子剂量的增加,Raman光谱展示出振动峰强度逐渐减弱而且一些逐渐消失,但其峰位几乎没有发生变化;XRD显示出Ga P晶体的衍射峰的强度逐渐减小;FTIR主要表现为宽化及其强度增加。这表明重离子^(56)Fe^(13+)的辐照使得Ga P晶体中的缺陷与无序性增加,导致晶体产生了局部的非晶化。The Misconstructural damage of GaP irradiated with （56）Fe（13＋） to fluences ranging from 1 × 107 ions/cm21 × 10（10） ions/cm2 were analyzed by X-ray diffraction（XRD） techniques, Fourier transform infrared spectroscopy（FTIR） and Raman spectroscopy. The result shows that, with the increase of irradiation ion fluences,local disorder and defects were produced in GaP crystal. With the increase of ion fluence, Raman spectra reveal the intensity of scattering peaks gradually weakens and some scattering peaks gradually disappear, however no changes in the peak position were found. XRD measurement displays that the intensity of diffraction peaks gradually decreases with an increase in ions fluences. Result from FTIR spectra exhibits that the intensity of reflection peaks gradually increases and the FWHM of reflection peaks broadens. These phenomena indicate that,the irradiation of heavy-ion Fe produces defects and disorder in GaP crystal, leading to a local amorphization.

关 键 词：磷化镓 56Fe13+辐照 晶格损伤 非晶化 

分 类 号：O572.21[理学—粒子物理与原子核物理]