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HAMR Recording Limitations and Extendibility

机译:HAMR记录的局限性和可扩展性

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摘要

Heat-assisted magnetic recording (HAMR) limitations and extendibility are studied in light of the recent 1.0 ${rm Tb/in}^{2}$ technology demonstration. The paper examines HAMR specific technology challenges, including switching field distributions at elevated temperature, saturation noise, and near-field transducer (NFT) thermal spot-size limits. While current HAMR recording density $(sim 1 {rm Tb/in}^{2})$ is limited by switching field distribution and thermal spot size, ultimate HAMR density (up to 5 ${rm Tb/in}^{2}$) is determined by achievable recording-layer magnetic anisotropy and grain size.
机译:根据最近的1.0 $ {rm Tb / in} ^ {2} $ 技术演示。本文探讨了HAMR的特定技术挑战,包括高温下的开关场分布,饱和噪声和近场换能器(NFT)热点尺寸限制。尽管当前的HAMR记录密度 $(sim 1 {rm Tb / in} ^ {2})$ 受到切换​​字段的限制分布和热点尺寸,极限HAMR密度(最多5个 $ {rm Tb / in} ^ {2} $ )由可达到的记录层磁各向异性和晶粒尺寸确定。

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