Ferromagnetic CoPt3 nanowires: Structural evolution from fcc to ordered L12

Ming Chen Hao, Fen Hsin Chia, Yuan Chen Po, Ru Shi Liu*, Shu Fen Hu, Chao Yuan Huang, Jyh Fu Lee, Ling Yun Jang


研究成果: 雜誌貢獻期刊論文同行評審

35 引文 斯高帕斯(Scopus)


This investigation demonstrates the magnetic properties and nanostructures of CoPt3 wire arrays that were fabricated by electrodeposition using a porous alumina template. The X-ray absorption analysis clearly verified the occurrence of a phase transition in CoPt3 nanowires. This phase transition significantly influences the magnetic properties and enhances coercivity and squareness. The phase transition of CoPt3 nanowires was from a random alloy distribution to anisotropically ordered CoPt3 (L12). The thermally induced phase transition of CoPt3 nanowires to ordered L12 CoPt3 through a "cluster-in-cluster" intermediate state via interdiffusion processes is revealed. The mechanism exhibited by these CoPt3 nanowires is proposed to explain the strong correlation between their magnetic character and their atomic distribution.

頁(從 - 到)15794-15801
期刊Journal of the American Chemical Society
出版狀態已發佈 - 2009 11月 4

ASJC Scopus subject areas

  • 催化
  • 化學 (全部)
  • 生物化學
  • 膠體和表面化學


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