Abstract
The structure of [Co(tCo)/Pt(10 Å)]30 multilayers has been studied by x-ray absorption spectroscopy and x-ray diffraction using in-plane and out- of-plane polarized synchrotron radiation. The x-ray absorption near-edge spectroscopy shows that the Co layer is like a fcc pseudomorphic structure for tCo less than 4 Å. For tCo = 10Å, the spectra in both directions are separated and look closer to the bulk hcp Co. The extended x-ray absorption fine structure studies reveal that the Co-Pt interface of the multilayers fitted with a sharp boundary better than an interdiffusion model. The in-plane x-ray diffraction shows that the Pt layer in the multilayer possesses a 2%-3.5% compressible strain. Although the saturation magnetization Ms does not depend on tCo or interfacial roughness in any simple form, the Ms values scale quite linearly with the in-plane Pt strain. We conclude that the interfacial strain is important for the perpendicular magnetization in the Co/Pt multilayers.
Original language | English |
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Pages (from-to) | 7059-7061 |
Number of pages | 3 |
Journal | Journal of Applied Physics |
Volume | 89 |
Issue number | 11 II |
DOIs | |
Publication status | Published - 2001 Jun 1 |
Event | 8th Joint Magnetism and Magnetic Materials-Intermag Conference - San Antonio, TX, United States Duration: 2001 Jan 7 → 2001 Jan 11 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy