Journal
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
Volume 32, Issue 7, Pages 2229-2233Publisher
SPRINGER
DOI: 10.1007/s10948-018-4953-8
Keywords
Magnetic thin film; Negative magnetocrystalline anisotropy; ECC media
Categories
Funding
- National Natural Science Foundations of China [11704167, 11574122]
- Fundamental Research Funds for the Central Universities [lzujbky-2017-k20, lzujbky-2017-31]
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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 2 nm. 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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