R&D: Microstructure and Magnetic Properties of Exchange-Coupled Co72Pt28/Pt/Co81Ir19 Composite Media for PMR
Coupling of two layers have been evidenced by magnetic characterization for all studied films with Pt inter-layer thickness ranging from 0 to 2nm.
This is a Press Release edited by StorageNewsletter.com on February 5, 2019 at 2:11 pmJournal of Superconductivity and Novel Magnetism has published an article written by Z. W. Li, J. Y. Jiao, Z. Luo, T. Y. Ma, L. Qiao, Y. Wang, T. Wang, and F. S. Li, Key Lab for Magnetism and Magnetic Materials of the MOE, Key Lab for Special Functional Materials and Structure Design of the MOE Lanzhou University Lanzhou, People’s Republic of China.
Abstract: “In this work, we report the investigation of microstructure and magnetic properties of the Co72Pt28/Pt/Co81Ir19 exchange-coupled composite (ECC) media using soft-layer (SL) of Co81Ir19 with negative magnetocrystalline anisotropy (MA). Our TEM images show that the hard-layer (HL) exhibits a columnar type microstructure with well-isolated grains and the exchange-coupled SL with hcp-structure show the same texture. Strong coupling of the two layers have been evidenced by the magnetic characterization for all the studied films with Pt inter-layer thickness ranging from 0 to 2nm. Importantly, these ECC media films have much lower coercivities and much higher thermal stabilities in the favor of high-density magnetic recording.“
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