Hostname: page-component-7c8c6479df-p566r Total loading time: 0 Render date: 2024-03-29T10:48:17.240Z Has data issue: false hasContentIssue false

Phase transformation in Pb:GeSbTe chalcogenide films

Published online by Cambridge University Press:  21 October 2008

J. Kumar
Affiliation:
Semiconductors Laboratory, Department of Applied Physics, Guru Nanak Dev Univeristy, Amritsar-143005, India
P. Kumar
Affiliation:
Semiconductors Laboratory, Department of Applied Physics, Guru Nanak Dev Univeristy, Amritsar-143005, India
M. Ahmad
Affiliation:
Semiconductors Laboratory, Department of Applied Physics, Guru Nanak Dev Univeristy, Amritsar-143005, India
R. Chander
Affiliation:
Semiconductors Laboratory, Department of Applied Physics, Guru Nanak Dev Univeristy, Amritsar-143005, India
R. Thangaraj*
Affiliation:
Semiconductors Laboratory, Department of Applied Physics, Guru Nanak Dev Univeristy, Amritsar-143005, India
T. S. Sathiaraj
Affiliation:
Department of Physics, University of Botswana, Botswana
Get access

Abstract

A comprehensive analysis on the amorphous to crystalline phase transformation in Pb:GeSbTe chalcogenide alloy has been discussed. The structure identified with X-ray measurements has been discussed in relation to thermal analysis carried out on bulk samples. Optical constants have been calculated in the 350 to 800 nm wavelength range, using Fresnel's equation. The effect of Pb substitution on the optical contrast in terms of change in reflectivity and optical parameters (viz. refractive index, extinction coefficient) has been discussed. Marginal decrease in the optical contrast has been observed with a small increase in Pb content, which is effective to maintain the sufficient signal to noise ratio for optical phase-change storage.

Keywords

Type
Research Article
Copyright
© EDP Sciences, 2008

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

Smith, A.W., Appl. Opt. 13, 795 (1974) CrossRef
Yamada, N., Ohna, E., Nishiuchi, K., Akahira, N., J. Appl. Phys. 69, 2849 (1991) CrossRef
Nakayoshi, Y., Kanemitsu, Y., Masumoto, Y., Maeda, Y., Jpn J. Appl. Phys. 31, 4781 (1992) CrossRef
Mao, Z.L., Chen, H., Jung, A.C., J. Appl. Phys. 78, 2338 (1995) CrossRef
Coombs, J.H., Jongenelis, A.P.J.M., van Es-Spiekman, W., Jacobs, B.A.J., J. Appl. Phys. 78, 4906 (1996) CrossRef
Yamada, N., Mater. Res. Soc. Bull. 21, 48 (1996) CrossRef
Libera, M., Chen, M., Mater. Res. Soc. Bull. 15, 40 (1990) CrossRef
Ovshinsky, S.R., Phys. Rev. Lett. 21, 20 (1968) CrossRef
Wutting, M., Yamada, N., Nat. Mater. 6, 824 (2007) CrossRef
Lee, C.M., Chin, T.S., Huang, Y.Y., Jpn J. Appl. Phys. 39, 6369 (2000)
Kim, M.R., Seo, H., Jung, T.H., Proc. SPIE 3401, 259 (1998) CrossRef
Kooi, B.J., De Hosson, J.T.M., J. Appl. Phys. 95, 4714 (2004) CrossRef
Terao, M., Mayauchi, Y., Andoo, K., Tamura, R., Optoelectron. Devices Technol. 4, 223 (1989)
Lie, C., Kuo, P., Hsu, W., Wu, T., Chen, P., Chen, S., Jpn J. Appl. Phys. 42, 1026 (2003) CrossRef
A. Hirotsune, Y. Miyauchi, M. Terao, Appl. Phys. Lett. 66, 2312 (1995)
Kojima, R., Kouzaki, T., Matsunaga, T., Yamada, N., Proc. SPIE 3401, 14 (1998) CrossRef
Zhou, G., Jacobs, B.A.J., Jpn J. Appl. Phys. 138, 1625 (1999) CrossRef
Dimitrov, D.Z., Tseng, Y.Lu.M., Hsu, W., Shieh, H., Jpn J. Appl. Phys. 141, 1656 (2002) CrossRef
Prokhorov, E., Trapaga, G., Morales-Sanchez, E., Hernandez-Landaverde, M., Kovalenko, Y., Gonzalez- Hernandez, J., J. Appl. Phys. 96, 1040 (2004)
Abkowitz, M., Polym. Eng. Sci. 24, 1149 (1984) CrossRef
W.K. Njoroge, Ph.D. thesis, Rheinisch-Westfälischen Technical University, Aachen (2001)
D.R. Lide, Chemical Rubber Company handbook of chemistry and physics (CRC Press, Boca Raton, Florida, USA, 1996)
Khan, S.A., Zulfequar, M., Husain, M., Physica B 324, 336 (2002) CrossRef
J.I. Pankove, Optical processes in semiconductors (Prentice-Hall, New Jersey, 1971)
García-García, E., Mendoza-Galván, A., Vorobiev, Y., Morales-Sánchez, E., González-Hernández, J., Martínez, G., Chao, B.S., J. Vac. Sci. Technol. A 17, 1805 (1999) CrossRef
Wang, K., Steimer, C., Wamwangi, D., Ziegler, S., Wutting, M., Tomforde, J., Bensch, W., Microsyst. Technol. 13, 203 (2007) CrossRef