Silicon self-diffusivity measurement in thermal SiO2 by 30Si/28Si isotopic exchange
Silicon self-diffusivity measurement in thermal SiO2 by 30Si/28Si isotopic exchange
复制标题
通过 30Si/28Si 同位素交换测量热 SiO2 中的硅自扩散率
DOI:
10.1063/1.1589168
复制
发表时间:
2003
影响因子:
3.2
通讯作者:
D. Tsoukalas
中科院分区:
文献类型:
--
作者:
D. Mathiot;J. Schunck;M. Perego;M. Fanciulli;P. Normand;C. Tsamis;D. Tsoukalas
Isotopic exchange is used to measure the silicon self-diffusivity in thermal silicon dioxide. The experiments, using an isotopically enriched 28Si oxide layer, are specially designed to obtain the actual equilibrium diffusivity in the oxide. A simple Arrhenius law, with an activation energy of 5.34 eV, very nicely describes the measured diffusivities as a function of the temperature. Our values are compared with literature data, and we discuss the possible origin of the observed differences.