Abstract

We present the results of crystallization studies in thin-film samples of amorphous and crystalline GexSbyTez. The experiments, conducted at moderately elevated temperatures, are based on measurements of the first-order diffraction efficiency from a two-dimensional periodic array of recorded marks. When the samples are slowly heated above room temperature, changes in the efficiencies of various diffracted orders give information about the on-going crystallization process within the sample. Two different compositions of the GeSbTe alloy are used in these experiments. Measurements on Ge2Sb2.3Te5 films show crystallization dominated by nucleation. For the Sb-rich eutectic composition Ge-(SbTe), crystallization is found to be dominated by growth from crystalline boundaries. We also show that crystalline marks written by relatively high-power laser pulses are different in their optical properties from the regions crystallized by slow heating of the sample to moderate temperatures.

© 2001 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Crystallization behavior of Ge-doped eutectic Sb70Te30 films in optical disks

Pramod K. Khulbe, Terril Hurst, Michikazu Horie, and Masud Mansuripur
Appl. Opt. 41(29) 6220-6229 (2002)

Behavior of GeSbTeBi phase-change optical recording media under subnanosecond pulsed laser irradiation

Kazuo Watabe, Pavel Polynkin, and Masud Mansuripur
Appl. Opt. 43(20) 4033-4040 (2004)

Local electrical characterization of laser-recorded phase-change marks on amorphous Ge2Sb2Te5 thin films

Chia Min Chang, Cheng Hung Chu, Ming Lun Tseng, Hai-Pang Chiang, Masud Mansuripur, and Din Ping Tsai
Opt. Express 19(10) 9492-9504 (2011)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (23)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription