Anomalous phase change characteristics in Fe-Te materials

Journal Article · Mon May 14 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4719074· OSTI ID:22025554

Fu, X T ^[1]; Song, W D; Ji, R ^[1]; Ho, H W ^[1]; Wang, L ^[2]; Hong, M H ^[3]

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1. Data Storage Institute, (A-STAR) Agency for Science, Technology and Research, DSI Building 5, Engineering Drive 1, Singapore 117608 (Singapore)
2. School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
3. Department of Electrical and Computer Engineering, National University of Singapore, Singapore 119260 (Singapore)

Phase change materials have become significantly attractive due to its unique characteristics for its extensive applications. In this paper, a kind of phase change material, which consists of Fe and Te components, is developed. The crystallization temperature of the Fe-Te materials is 180 deg. C for Fe{sub 1.19}Te and can be adjusted by the Fe/Te ratio. High-speed phase change in the Fe-Te materials has been demonstrated by nanosecond laser irradiation. Comparing to conventional phase change materials, the Fe-Te materials exhibit an anomalous optical property that has higher reflectivity at amorphous than crystalline state, which is useful for data storage design.

• OSTI ID: 22025554
• Journal Information: Applied Physics Letters, Vol. 100, Issue 20; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMORPHOUS STATE
CRYSTALLIZATION
CRYSTALS
IRON ALLOYS
LASER RADIATION
PHASE CHANGE MATERIALS
REFLECTIVITY
TELLURIUM ALLOYS
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA