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- Title
Microstructure and magnetic properties of FePt thin films for the coating of magnetic force microscopy tips.
- Authors
Zhou, Jie; Han, Zeyu; Wang, Xuan; Zhang, Luran; Ma, Zhi; Ma, Li; Zheng, Fu
- Abstract
L10-FePt thin films with (111)-texture were deposited on Si(100) substrates at various atomic ratios and annealing temperatures to be used as a cover layer for magnetic force microscope (MFM) tips. Their microstructure and magnetic properties were systematically studied. The experimental results indicate that both atomic ratio and annealing temperature affect the disorder-order transformation of FePt films. In particular, when the atomic ratio approaches 1:1 (Fe: 51 at.%, Pt: 49 at.%) and the annealing temperature is 600 °C, the FePt film exhibits an ultra-high in-plane coercivity of 13.2 kOe. This is attributed to the formation of an L10-FePt phase with high order parameters. Based on the optimal preparation parameters, MFM tips were prepared by depositing FePt films on non-magnetic Si tips. Magnetic domain structures of magnetic tape and magnetic recording medium were successfully observed using these home-made FePt MFM tips. Therefore, the high coercivity L10-FePt films with (111)-texture prepared on Si substrates are expected to be potential materials for the fabrication of MFM tips.
- Subjects
MAGNETIC force microscopy; MAGNETIC properties; THIN films; MAGNETIC domain; MAGNETIC tapes; MAGNETIC films; SILICON nanowires
- Publication
Journal of Materials Science: Materials in Electronics, 2024, Vol 35, Issue 18, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-024-12987-6