A study on phase relations and texture of Co1 − xPtx (0.09 < x < 0.86) nanowire arrays

Based on Rietveld refinement of X-ray diffraction patterns, the phase structure and microstructural parameters of Co1 − xPtx nanowires are determined for a range of Pt content. The phase structure of the as-deposited Co1 − xPtx(0.09 < x < 0.86) nanowire arrays changes progressively from hcp ε-Co to a mixture of the hcp ε-Co and fcc α-Co,Pt solid solution and finally to pure fcc Co,Pt solid solution with Pt content increasing . Moreover, the texture parameter P(111) has a maximum value with Pt content of 50% confirmed by the (111) pole figure measurement. It is suggested that this contributes to enhance magnetocrystalline anisotropy, resulting in a relatively high squareness and coercivity for the nanowires.