Effects of crystallographic texture on stress-migration resistance in copper thin films

J. Koike, M. Wada, M. Sanada, K. Maruyama

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

The crystallographic texture of heat-treated Cu thin films and its effects on stress-migration resistance were studied as a function of film thickness within a range of 50-900 nm. All as-deposited films had (111) texture. After heat treatment at 723 K, texture transition from (111) to (100) was observed in films of thickness greater than 300 nm. The (111) texture films after heat treatment showed severe stress migration; in contrast, the (100) texture films showed no noticeable stress migration. The observed stress-migration resistance in the (100) texture films can be attributed to the absence of twins and to lower thermal stress as compared with the (111) texture films.

Original languageEnglish
Pages (from-to)1017-1019
Number of pages3
JournalApplied Physics Letters
Volume81
Issue number6
DOIs
Publication statusPublished - 2002 Aug 5

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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