Well-ordered Co90Pt10 nanotubes and nanowires have been fabricated into anodic aluminum oxide (AAO) templates by using a dc electrodeposition method. The effects of an external magnetic field on the magnetic properties of Co90Pt10 nanotubes and nanowires are investigated. The results show that the external magnetic field during electrodeposition has a significant effect on Co90Pt10 nanowires, as well as nanotubes. The external magnetic field induces good texture and large grain size in Co90Pt10 nanowires, causing a reduction of coercivity. An obvious uniaxial anisotropy is induced in Co90Pt10 nanotubes, causing the crossover of the easy axis along the directions of an external magnetic field.
Bibliographical noteFunding Information:
The project was supported by the State Key Project of Fundamental Research of Ministry of Science and Technology (MOST, No. 2010CB934400) and National Natural Science Foundation of China (NSFC, Grant Nos. 10934099, 10874225 and 51021061), and the partial support of Graduate Education Project of Beijing Municipal Commission of Education and K. C. Wong Education Foundation, Hong Kong.
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