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首页> 外文期刊>IEEE Transactions on Magnetics >Infrared Near-Field Transducer for Heat-Assisted Magnetic Recording
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Infrared Near-Field Transducer for Heat-Assisted Magnetic Recording

机译:热辅助磁记录的红外近场换能器

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摘要

Heat-assisted magnetic recording (HAMR) is one of the next generation data storage technologies that aims to increase the areal data density to beyond 1 TB/in2. Near-field transducer (NFT), which is a type of plasmonic nanoscale antenna, is a key component of the HAMR system. The laser in an HAMR system typically operates in the near infrared wavelength range between 700-900 nm. We explore the plasmonic behavior and performance of a number of NFTs at longer wavelength of 1550 nm. The different plasmonic modes in the NFTs at different wavelengths are analyzed, and the correlation of the NFT performance with variations in the geometrical design is investigated. Thermal performances of NFT are also studied and compared with the thermal performances when NFTs are operated near 800 nm. It is found that there is a significant improvement in the figures of merit when using longer wavelengths and this can provide an important strategy to realize higher performance data storage devices.
机译:热辅助磁记录(HAMR)是下一代数据存储技术之一,旨在将区域数据密度提高到超过1 TB / in 2 。近场换能器(NFT)是等离子体等离子体纳米天线的一种,是HAMR系统的关键组件。 HAMR系统中的激光器通常在700-900 nm之间的近红外波长范围内工作。我们探索了在1550 nm更长波长下许多NFT的等离子体行为和性能。分析了不同波长下NFT中的不同等离激元模式,并研究了NFT性能与几何设计变化之间的相关性。还研究了NFT的热性能,并将其与在800 nm附近工作时的热性能进行了比较。可以发现,使用更长的波长时,品质因数有了很大的改善,这可以为实现更高性能的数据存储设备提供重要的策略。

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