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説明:

Heat-assisted magnetic recording (HAMR) enables ultra-high areal density by locally heating magnetic recording media with high magnetic anisotropy, but the writing performance critically depends on the behavior of heat flow in its complex multilayer structure. In this work, we establish an experiment-informed approach that combines time-domain thermoreflectance (TDTR) with a step-by-step fitting strategy to extract the thermal conductivities and interfacial thermal resistances in HAMR media. These experimentally determined properties are directly implemented in finite-element method simulations, which show good agreement with reported spin-stand measurements. The TDTR-based experiment-informed modeling established in this study reliably describes a device-level HAMR behavior and provides a quantitative guidance for recording media design.

権利情報:

• In Copyright
  

  This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Kota Hasegawa, Takamasa Hirai, Takayuki Fukushima, Fuyuki Ando, Naoki Takahara, Ken-ichi Uchida; Experimental determination of nanoscale thermal transport properties in heat-assisted magnetic recording media using step-by-step time-domain thermoreflectance method. Appl. Phys. Lett. 1 June 2026; 128 (22): 222201 and may be found at https://doi.org/10.1063/5.0339978.

キーワード: Time-domain thermoreflectance, Heat-assisted magnetic recording

刊行年月日: 2026-06-01

出版者: AIP Publishing

掲載誌:

• Applied Physics Letters (ISSN: 00036951) vol. 128 issue. 22 222201

研究助成金:

• Japan Science and Technology Agency JPMJER2201
• Japan Society for the Promotion of Science 25K17940

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6327

公開URL: https://doi.org/10.1063/5.0339978

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更新時刻: 2026-06-09 11:44:28 +0900

MDRでの公開時刻: 2026-06-09 15:25:48 +0900