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Proceedings Paper

Fabrication and properties of Nd(Tb,Dy)Co/Cr films with perpendicular magnetic anisotropy
Author(s): Weiming Cheng; Xiangshui Miao; Junbing Yan; Xiaomin Cheng
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Paper Abstract

Light rare earth-heavy rare earth-transition metal films (LRE-HRE-TM)have large saturation magnetization (Ms) and are the promising media for hybrid recording. In this paper, Nd(Tb,Dy)Co/Cr films with perpendicular magnetic anisotropy were successfully fabricated onto glass substrate by RF magnetron sputtering and the effects of sputtering technology parameters and Nd substitution for HRE atoms on the magnetic properties were investigated. It was found that when the sputtering power and sputtering time are 250W and 4min, respectively, the magnetic properties of Nd(Tb,Dy)Co/Cr films obtain optimization, perpendicular coercivity, Ms and remanence square ratio(S) of NdTbCo/Cr film reach 3.8kOe, 247emu/cm3 and 0.801, respectively. With the increasing of Nd concentration, Ms increases, while the coercivity (Hc)and the temperature stability of magnetic properties decrease distinctly. These results can be explained by the ferri-magnetic structure of the RE-TM alloy.

Paper Details

Date Published: 23 October 2009
PDF: 6 pages
Proc. SPIE 7517, Photonics and Optoelectronics Meetings (POEM) 2009: Optical Storage and New Storage Technologies, 75170Y (23 October 2009); doi: 10.1117/12.845978
Show Author Affiliations
Weiming Cheng, Huazhong Univ. of Science and Technology (China)
Xiangshui Miao, Huazhong Univ. of Science and Technology (China)
Junbing Yan, Huazhong Univ. of Science and Technology (China)
Xiaomin Cheng, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7517:
Photonics and Optoelectronics Meetings (POEM) 2009: Optical Storage and New Storage Technologies
Masud Mansuripur; Changsheng Xie; Xiangshui Miao, Editor(s)

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