INTERFACE EFFECTS AND ELASTIC-CONSTANTS OF AG/NI SUPERLATTICES STUDIED BY BRILLOUIN-SCATTERING

被引：31

作者：

CARLOTTI, G ^{[1
]}

FIORETTO, D ^{[1
]}

SOCINO, G ^{[1
]}

RODMACQ, B ^{[1
]}

PELOSIN, V ^{[1
]}

机构：

[1] CEN,DRFMC,SP2M,MET PHYS LAB,F-38041 GRENOBLE,FRANCE

来源：

JOURNAL OF APPLIED PHYSICS | 1992年 / 71卷 / 10期

关键词：

D O I：

10.1063/1.350636

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The elastic properties of sputter-deposited Ag/Ni superlattices have been studied by means of the Brillouin light scattering technique. Measurements have been taken on both free-standing and glass-supported superlattices, the former deposited at 100 K, the latter at 300 K. The two effective elastic constants c11 and c44 have been determined on specimens 5-mu-m thick for different superlattice periods; c44 decreases by almost 40% as the bilayer periodicity decreases from 19 to 1.3 nm, while c11 shows no appreciable variation. Measurements performed on supported specimens, 0.5-mu-m thick, enabled us to get information also on the constant c33, which exhibits a monotonic increase with period. The elastic anomalies found can be related to the appreciable lattice distortion observed by x-ray diffraction experiments. Both Brillouin scattering and x-ray analysis have shown that the interface quality improves appreciably when the temperature of deposition is lowered from 300 to 100 K.

引用

页码：4897 / 4902

页数：6

共 24 条

[21] ELASTIC-CONSTANT ANOMALIES IN METALLIC SUPER-LATTICES - A MOLECULAR-DYNAMICS STUDY [J].