Ultra-long single-crystalline α-Si 3N 4 nanowires: Derived from a polymeric precursor

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

Research output: Contribution to journalArticle

71 Scopus citations

Abstract

Single-crystalline α-Si 3N 4 nanowires were synthesized by thermal decomposition of a polysilazane preceramic polymer using FeCl 2 powders as catalyst. The nanowires, which are 20-40 nm in diameter and up to several mm in length, possess smooth surfaces and uniform diameters along the entire length and contain no detectable structural defects such as dislocation or stacking faults. The study also revealed that all nanowires grow along [100] direction. The growth of the nanowires is attributed to a novel solid-liquid-gas-solid reaction/crystallization process. The mechanism that governs the formation of nanowires rather than nanobelts is discussed.

Original languageEnglish (US)
Pages (from-to)1647-1650
Number of pages4
JournalJournal of the American Ceramic Society
Volume88
Issue number6
DOIs
StatePublished - Jun 1 2005

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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