ENHANCED MECHANICAL AND MAGNETIC-PROPERTIES OF GRANULAR METAL THIN-FILMS

被引:18
作者
SCHLESINGER, TE
CAMMARATA, RC
GAVRIN, A
XIAO, JQ
CHIEN, CL
FERBER, MK
HAYZELDEN, C
机构
[1] JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218
[2] OAK RIDGE NATL LAB,HIGH TEMP MAT LAB,OAK RIDGE,TN 37831
[3] HARVARD UNIV,DIV APPL SCI,CAMBRIDGE,MA 02138
关键词
D O I
10.1063/1.349286
中图分类号
O59 [应用物理学];
学科分类号
摘要
The mechanical properties of Ag-Al2O3 and Ni-Al2O3 granular metal films, as well as the magnetic behavior of the nickel-based films, is presented. Enhancements in the mechanical properties of these materials, as measured by low load indentation techniques, were observed for a metal volume fraction p of about 0.55. This volume fraction corresponded to the percolation threshold p(c) as determined from the magnetic measurements. A peak in the compliance as a function of p was observed, similar to elastic anomalies reported for small bilayer period superlattices. A discontinuity in the rate of change of hardness as a function of p was also observed, and believed to result from a change in deformation mechanism at p(c).
引用
收藏
页码:3275 / 3280
页数:6
相关论文
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