Growth of platelike and branched single-crystalline Si3N 4 whiskers

Weiyou Yang, Zhipeng Xie, Jingjing Li, Hezhuo Miao, Ligong Zhang, Linan An

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

In this communication, we report for the first time the growth of platelike and branched Si3N4 whiskers via catalyst-assisted pyrolysis of polymeric precursors. The as-prepared whiskers are single crystalline with a uniform thickness and width. The thickness and width of the Si3N4 whiskers range from 200 to 300 nm and 800 to 1200 nm, respectively. The platelike α-Si3N4 whiskers grew along [010] direction, while the branches grew along [001] direction. A growth mechanism based on solid-liquid-gas-solid reaction/crystallization is proposed. The formation of platelike whiskers instead of cylindrical whiskers is attributed to an anisotropic growth at an early nucleation/growth stage.

Original languageEnglish (US)
Pages (from-to)263-268
Number of pages6
JournalSolid State Communications
Volume132
Issue number3-4
DOIs
StatePublished - Oct 2004

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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