Ferromagnetic CoPt3 Nanowires: Structural Evolution from fcc to Ordered L12

• DOI: 10.1021/ja906103p
• Publication Date: 2009-10-06T16:07:05Z
• Authors: Hao Ming Chen; Chia Fen Hsin; Po Yuan Chen; Ru-Shi Liu; Shu-Fen Hu; Chao-Yuan Huang; Jyh-Fu Lee; Ling-Yun Jang
• Keywords: Magnetics; Fourier Analysis; X-Ray Diffraction; Nanowires; Alloys; Microscopy, Electron, Scanning; 02 engineering and technology; 0210 nano-technology; 01 natural sciences; 0104 chemical sciences

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 occurrence phase transition in nanowires. significantly influences enhances coercivity squareness. nanowires was from random alloy distribution to anisotropically ordered (L12). thermally induced L12 through "cluster-in-cluster" intermediate state via interdiffusion processes is revealed. mechanism exhibited these proposed explain strong correlation between their character atomic distribution.