Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-29T09:03:51.534Z Has data issue: false hasContentIssue false
  • English
  • Français

Enhanced Faraday rotation in garnet films and multilayers

Published online by Cambridge University Press:  15 March 2011

S. Kahl  and
A. M. Grishin
S. Kahl
Affiliation:
Condensed Matter Physics, Royal Institute of Technology, S-16440 Stockholm, Sweden
A. M. Grishin
Affiliation:
Condensed Matter Physics, Royal Institute of Technology, S-16440 Stockholm, Sweden
Get access

Abstract

Films were prepared by pulsed laser deposition. We investigated or measured crystallinity, morphology, film-substrate interface, cracks, roughness, composition, magnetic coercivity, refractive index and extinction coefficient, and magneto-optical Faraday rotation (FR) and ellipticity. The investigations were partly performed on selected samples, and partly on two series of films on different substrates and of different thicknesses. BIG films were successfully tested for the application of magneto-optical visualization. The effect of annealing in oxygen atmosphere was also investigated - very careful annealing can increase FR by up to 20%.

Periodical BIG-YIG multilayers with up to 25 single layers were designed and prepared with the purpose to enhance FR at a selected wavelength. A central BIG layer was introduced as defect layer into this one-dimensional magneto-optical photonic crystal (MOPC) and generated resonances in optical transmittance and FR at a chosen design wavelength. In a 17-layer structure, at the wavelength of 748 nm, FR was increased from–2.6 deg/μm to –6.3 deg/μm at a small reduction in transmittance from 69% to 58% as compared to a single-layer BIG film of equivalent thickness. In contrast to thick BIG films, the MOPCs did not crack. We were first to report preparation of all-garnet MOPCs and second to experimentally demonstrate the MOPC principle in magneto-optical garnets.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 817: Symposium L – New Materials for Microphotonics , 2004 , L8.2
Copyright
Copyright © Materials Research Society 2004

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Buhrer, C. F., J. Appl. Phys., 40, 4500 (1969).Google Scholar
2. Hansen, P., Tolksdorf, W., and Witter, K., IEEE. Trans. Magn., MAG–20, 1099 (1984).Google Scholar
3. Okuda, T., Koshizuka, N., Hayashi, H., Taniguchi, H., Satoh, K., and Yamamoto, H., IEEE Translation J. Magn. Jpn., 3, 483 (1988).Google Scholar
4. Rosenberg, R., Rubinstein, C. B., and Herriott, D. R., Appl. Opt., 3, 1079 (1964).Google Scholar
5. Inoue, M., Arai, K., Fujii, T., and Abe, M., J. Appl. Phys., 83, 6768 (1998).Google Scholar
6. Steel, M. J., Levy, M., and Osgood, R. M., IEEE Photon. Techn. Lett., 12, 1171 (2000).Google Scholar
7. Inoue, M., Arai, K., Fuji, T., and Abe, M., J. Appl. Phys., 85, 5768 (1999).Google Scholar
8. Kato, H., Matsushita, T., Takayama, A., Egawa, M., Nishimura, K., and Inoue, M., J. Appl. Phys., 93, 3906 (2003).Google Scholar
9. Kahl, S. and Grishin, A. M., Appl. Phys. Lett., 84, 1438 (2004).Google Scholar
10. Kahl, S., Grishin, A.M., Khartsev, S.I., Kawano, K., and Abell, J.S., IEEE Trans. Magn., 3, 2457 (2001).Google Scholar
11. Kahl, S., Khartsev, S. I., Grishin, A. M., Kawano, K., Kong, G., Chakalov, R. A., and Abell, J. S., J. Appl. Phys., 91, 9556 (2002).Google Scholar
12. Flament, S., , Warsito, Mechin, L., Gunther, C., Kawano, K., Kong, G., Chakalov, R. A., Abell, J. S., Kahl, S., Khartsev, S. I., and Grishin, A. M., J. Appl. Phys., 91, 9556 (2002).Google Scholar
13. Kahl, S. and Grishin, A. M., J. Appl. Phys., 93, 6945 (2003).Google Scholar
14. Kahl, S. and Popov, V. and Grishin, A. M., J. Appl. Phys., 94, 5688 (2003).Google Scholar
15. Kahl, S. and Grishin, A. M., J. Magn. Magn. Mater., in press.Google Scholar