Near-field optical transducer for heat-assisted magnetic recording for beyond-10-Tbit/in2 densities

Rabee Ikkawi, Nissim Amos, Andrey Lavrenov, Alexander Krichevsky, Desalegne B. Teweldebrhan, Suchismita Ghosh, Alexander A. Balandin, Dmitri Litvinov, Sakhrat Khizroev

Research output: Contribution to journalReview articlepeer-review

24 Scopus citations


Continuous device downscaling, growing integration densities of the nanoscale electronics and development of alternative information processing paradigms, such as spintronics and quantum computing, call for drastic increase in the data storage capacity. In this paper we review our recent results for the design, fabrication and characterization of the near-field optical transducer for heat-assisted magnetic recording for beyond the 10-Tbit/in2 densities. In order to record information, the heat-assisted magnetic recording system uses not only magnetic but also thermal energy. For this reason the recording media with the substantially higher anisotropy could be utilized to achieve the ultra-high recording densities. In this review, we provide details of the design of the near-field transducer capable of delivering over 50 μW power into a spot with the diameter of 30 nm. Heat-assisted magnetic recording and spin-based information processing require accurate thermal management of magnetic thin films. Here we report the results of our preliminary investigation of thermal transport in Pd/CoPd/Pd magnetic multilayers with the thickness of individual layers in the nanometer range.

Original languageEnglish (US)
Pages (from-to)44-54
Number of pages11
JournalJournal of Nanoelectronics and Optoelectronics
Issue number1
StatePublished - Mar 2008
Externally publishedYes


  • Focused ion beam
  • Heat assisted magnetic recording
  • Heat diffusion
  • Near-field scanning optical microscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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