OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 17 — Aug. 13, 2012
  • pp: 18946–18954

Integrated head design using a nanobeak antenna for thermally assisted magnetic recording

Takuya Matsumoto, Fumiko Akagi, Masafumi Mochizuki, Harukazu Miyamoto, and Barry Stipe  »View Author Affiliations

Optics Express, Vol. 20, Issue 17, pp. 18946-18954 (2012)

View Full Text Article

Enhanced HTML    Acrobat PDF (1591 KB) | SpotlightSpotlight on Optics

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We propose a near-field optical transducer using a triangular antenna and a thin film structure (wing) to efficiently generate an optical near-field near a magnetic head. A finite-difference time-domain calculation showed that the near-field was efficiently generated at the apex of the antenna when the dimensions of the wing were optimized for efficient delivery of the surface plasmon excited on the wing to the antenna. The calculated light utilization efficiency (ratio between the absorbed power in the recording medium and the input power) was 8%. The temperature distribution on the medium, magnetic field distribution, and magnetization pattern were calculated; the proposed recording head may be capable of an areal recording density of 2.5 Tb/in.2.

© 2012 OSA

OCIS Codes
(230.3810) Optical devices : Magneto-optic systems
(210.4245) Optical data storage : Near-field optical recording
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optical Data Storage

Original Manuscript: June 6, 2012
Revised Manuscript: July 17, 2012
Manuscript Accepted: July 24, 2012
Published: August 2, 2012

Virtual Issues
August 24, 2012 Spotlight on Optics

Takuya Matsumoto, Fumiko Akagi, Masafumi Mochizuki, Harukazu Miyamoto, and Barry Stipe, "Integrated head design using a nanobeak antenna for thermally assisted magnetic recording," Opt. Express 20, 18946-18954 (2012)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. H. Saga, H. Nemoto, H. Sukeda, and M. Takahashi, “New recording method combining thermo-magnetic writing and flux detection,” Jpn. J. Appl. Phys.38(Part 1, No. 3B), 1839–1840 (1999). [CrossRef]
  2. M. Ohtsu, ed., Near-Field Nano/Atom optics and Technology (Springer-Verlag, Tokyo, 1998).
  3. X. Shi, L. Hesselink, and R. L. Thornton, “Ultrahigh light transmission through a C-shaped nanoaperture,” Opt. Lett.28(15), 1320–1322 (2003). [CrossRef] [PubMed]
  4. B. C. Stipe, T. Strand, C. Poon, H. Balamane, T. Boone, J. Katine, J. Li, V. Rawat, H. Nemoto, A. Hirotsune, O. Hellwig, R. Ruiz, E. Dobisz, D. S. Kercher, N. Robertson, T. Albrecht, and B. D. Terris, “Magnetic recording at 1.5 Pb m−2 using an integrated plasmonic antenna,” Nat. Photonics4(7), 484–488 (2010). [CrossRef]
  5. W. A. Challener, C. Peng, A. V. Itagi, D. Karns, W. Peng, Y. Peng, X. Yang, X. Zhu, N. J. Gokemeijer, Y.-T. Hsia, G. Ju, R. E. Rottmayer, M. A. Seigler, and E. C. Gage, “Heat-assisted magnetic recording by a near-field transducer with efficient optical energy transfer,” Nat. Photonics3(4), 220–224 (2009). [CrossRef]
  6. T. Matsumoto, T. Shimano, H. Saga, H. Sukeda, and M. Kiguchi, “Highly efficient probe with a wedge-shaped metallic plate for high density near-field optical recording,” J. Appl. Phys.95(8), 3901–3906 (2004). [CrossRef]
  7. T. Matsumoto, Y. Anzai, T. Shintani, K. Nakamura, and T. Nishida, “Writing 40 nm marks by using a beaked metallic plate near-field optical probe,” Opt. Lett.31(2), 259–261 (2006). [CrossRef] [PubMed]
  8. T. Matsumoto, K. Nakamura, T. Nishida, H. Hieda, A. Kikitsu, K. Naito, and T. Koda, “Thermally assisted magnetic recording on a bit-patterned medium by using a near-field optical head with a beaked metallic plate,” Appl. Phys. Lett.93(3), 031108 (2008). [CrossRef]
  9. T. Matsumoto, M. Mochizuki, F. Akagi, Y. Iwanabe, H. Takei, H. Nemoto, H. Miyamoto, and B. Stipe, “Integrated head design for thermally assisted magnetic recording,” IEEE International Magnetics Conference (Taipei, 2011), AE-01 (2011).
  10. H. Raether, Surface Plasmons (Springer-Verlag, Berlin, 1988).
  11. Lumerical by Lumerical Solutions, Inc., Vancouver, Canada.
  12. P. B. Johnson and R. W. Christy, “Optical constants of the noble metals,” Phys. Rev. B6(12), 4370–4379 (1972). [CrossRef]
  13. ASTC Technical Documents, “ASTC HAMR reference media stack for NFT modeling,” (The International Disk Drive Equipment and Materials Association, 2011). http://idema-cloud.smartsite.net/?page_id=2269 .
  14. L. Zhang, Y. K. Takahashi, A. Perumal, and K. Hono, “L10-ordered high coercivity (FePt) Ag–C granular thin films for perpendicular recording,” J. Magn. Magn. Mater.322(18), 2658–2664 (2010). [CrossRef]
  15. O. Mosendz, S. Pisana, J. W. Reiner, B. Stipe, and D. Weller, “Ultra-high coercivity small-grain FePt media for thermally assisted recording,” J. Appl. Phys.111(7), 07B729 (2012). [CrossRef]
  16. T. Q. Qiu and C. L. Tien, “Size effects on nonequilibrium laser heating of metal films,” J. Heat Transfer115(4), 842–847 (1993). [CrossRef]
  17. A. A. Balandin, “Thermal properties of graphene and nanostructured carbon materials,” Nat. Mater.10(8), 569–581 (2011). [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited