Rhombohedral AIPt Films forme by Self-propagating, High Temperature Synthesis.

Adams, D. P. ; Rodriguez, M. A. ; Kotula, P. G.

Technical Information Center Oak Ridge Tennessee

关键词: Aluminium alloys;    Platinum alloys;    Synthesis;    Thin films;    Combustion;   

RP-ID  :  DE2006875985

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

High-purity AIPt thin films prepared by self-propagating, high temperature combustion synthesis show evidence for a new rhombohedral phase. Sputter deposited Al/Pt multilayers of various designs are reacted at different rates in air and in vacuum, and each form a new trigonal/hexagonal aluminide phase with unit cell parameters a = 15.57(8) (angstrom), c = 5.304 (1) (angstrom), space group R-3 (148), and Z, the number of formula units within a unit cell, =39. The lattice is isotructural to that of the AIPd R-3 lattice as reported by Matkovic and Schubert (Matkovic, 1997). Reacted films have a random in-plane crystallographic texture, a modest out-of-plane (001) texture, and equiaxed grains with dimensions on the order of film thickness.