Attempting nanolocalization of all-optical switching through nano-holes in an Al-mask

M. Savoini; A. H. Reid; T. Wang; C. E. Graves; M. C. Hoffmann; T.-M. Liu; A. Tsukamoto; J. Stöhr; H. A. Dürr; A. Kirilyuk; A. V. Kimel; T. Rasing

doi:10.1117/12.2061633

28 August 2014 Attempting nanolocalization of all-optical switching through nano-holes in an Al-mask

M. Savoini, A. H. Reid, T. Wang, C. E. Graves, M. C. Hoffmann, T.-M. Liu, A. Tsukamoto, J. Stöhr, H. A. Dürr, A. Kirilyuk, A. V. Kimel, T. Rasing

Author Affiliations +

Proceedings Volume 9167, Spintronics VII; 91672C (2014) https://doi.org/10.1117/12.2061633
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

Abstract

We investigate the light-induced magnetization reversal in samples of rare-earth transition metal alloys, where we aim to spatially confine the switched region at the nanoscale, with the help of nano-holes in an Al-mask covering the sample. First of all, an optimum multilayer structure is designed for the optimum absorption of the incident light. Next, using finite difference time domain simulations we investigate light penetration through nano-holes of different diameter. We find that the holes of 200 nm diameter combine an optimum transmittance with a localization better than λ/4. Further, we have manufactured samples with the help of focused ion beam milling of Al-capped TbCoFe layers. Finally, employing magnetization-sensitive X-ray holography techniques, we have investigated the magnetization reversal with extremely high resolution. The results show severe processing effects on the switching characteristics of the magnetic layers.

Citation Download Citation

M. Savoini, A. H. Reid, T. Wang, C. E. Graves, M. C. Hoffmann, T.-M. Liu, A. Tsukamoto, J. Stöhr, H. A. Dürr, A. Kirilyuk, A. V. Kimel, and T. Rasing "Attempting nanolocalization of all-optical switching through nano-holes in an Al-mask", Proc. SPIE 9167, Spintronics VII, 91672C (28 August 2014); https://doi.org/10.1117/12.2061633

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available