Effect of annealing on the elastic properties of Ag/Ni superlattices
Effect of annealing on the elastic properties of Ag/Ni superlattices
复制标题
退火对Ag/Ni超晶格弹性性能的影响
DOI：
10.1063/1.353009
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发表时间：
1993
影响因子：
3.2
通讯作者：
V. Pélosin
中科院分区：
文献类型：
--
作者：
G. Carlotti;D. Fioretto;G. Socino;L. Verdini;V. Pélosin
利用布里渊光散射技术研究了退火条件下溅射镀银/镍超晶格有效弹性常数的变化。在退火试样时进行的温度测量，通过检测多达四种引导声模式，使研究所研究结构的动态演化成为可能。在等时和等温循环后，在室温下进行测量，可以更深入地了解弹性特性的变化。对界面效应敏感的弹性常数c44和c33在热处理过程中也有明显的改变；没有测量到c11的明显变化。根据x射线和透射电子显微镜获得的结构信息，解释了弹性常数的变化；并与电阻率结果进行了比较。
The modifications of the effective elastic constants of sputter‐deposited Ag/Ni superlattices under annealing are studied by use of the Brillouin light‐scattering technique. At‐temperature measurements, taken while annealing the specimens, made it possible to study the dynamical evolution of the structure under investigation, through detection of up to four guided acoustic modes. Measurements taken at room temperature, after isochronal and isothermal cycles, permitted achievement of a deeper understanding of the variations of the elastic properties. It has been found that those elastic constants that are sensitive to interface effects, namely c44 and c33, are also markedly modified during the thermal treatment; no appreciable variation of c11 has been measured. The observed variations of the elastic constants are interpreted on the basis of the structural informations gained by use of x‐ray and transmission electron microscopy; a comparison is also made with electrical resistivity results.