Journal Article10.1063/1.1847232
A concept of exchange-coupled recording medium for heat-assisted magnetic recording
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TL;DR: In this article, exchange-coupled magnetic layers with different Curie point (TC) and similar coercivity (Hc) are stacked via exchange coupling for the heat-assisted magnetic recording medium.
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Abstract: A concept of exchange-coupled magnetic layer is presented for the heat-assisted magnetic recording medium. Magnetic layers with different Curie point (TC) and similar coercivity (Hc) are stacked via exchange coupling. Hc of the double layer changes abruptly at near TC of one of the layers. This means that the recording temperature can be reduced with little reduction in the thermal stability. A medium consisting of two Co∕Pd multilayers was fabricated as this medium. The temperature dependence of Hc of the double layer was similar to that of the expected one by a numerical calculation.
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Citations
Heat Assisted Magnetic Recording
Mark H. Kryder,Edward Charles Gage,Terry McDaniel,William Albert Challener,Robert Earl Rottmayer,Ganping Ju,Yiao-Tee Hsia,Mehmet Fatih Erden +7 more
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TL;DR: In this paper, a heat-assisted magnetic recording (HAMR) is proposed to extend areal densities to 1 Tb/in2 and beyond, and the unique components for a working HAMR system have been demonstrated.
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Control of Curie Temperature of FePt(Cu) Films Prepared From Pt(Cu)/Fe Bilayers
TL;DR: In this article, annealing Pt(Cu)/Fe bilayers prepared by facing targets sputtering were used to construct FePt(Cu) films for heat-assisted magnetic recording (HAMR) medium.
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Heat-Assisted Magnetic Recording
S. N. Piramanayagam,Tow C. Chong +1 more
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TL;DR: In this article, the authors introduce HAMR Recording Physics HAMR Optics and Head HAMR MediaHAMR Recording and Magnetic Force Microscopy Images Summary and Outlook Acknowledgments References
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Heat Assisted Magnetic Recording This technology uses temporary laser heating to increase hard drive storage density; modeling indicates the potential to exceed the capability of perpendicular recording by an order of magnitude.
Mark H. Kryder,Edward Charles Gage,Terry McDaniel,William Albert Challener,Robert Earl Rottmayer,Ganping Ju,Y. T. Hsia,M. Fatih Erden +7 more
- 01 Jan 2008
TL;DR: In this article, the authors survey the challenges for heat-assisted magnetic recording and the progress that has been made in addressing them, including new recording physics, near field optics, a recording head that integrates optics and magnetics, new recording materials, lubricants that can withstand extremely high temperatures, and new approaches to the recording channel design.
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Thermal demagnetization analysis of CoPt magnetic recording medium by magneto-optical recording test
TL;DR: In this paper, the authors studied the thermal demagnetization process of granular CoPt perpendicular magnetic recording medium and proposed a new simple model for the analysis of the thermal degradation of this experiment.
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液体急冷 Nd-Fe-C 系合金の磁気特性
TL;DR: In this paper, the magnetic properties of meltspun Nd-Fe-C and Nd -Fe-B-C-B alloys were investigated, and the average magnetic hyperfine field of Nd2Fe14C was found to be around 93% of that of B-C. The relative intensities and positions of the peaks of the Mossbauer spectra led them to conclude that C atoms occupy the same sites as B atoms in the Nd 2Fe14B phase and have a similar effect.
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Materials' challenges for metal multilayers as a magneto-optical recording medium
TL;DR: In this article, the authors discuss the attributes of multilayers and point out some of their deficiencies which need improvement in order to meet the overall requirements for a high density, high performance recording medium.