Sub-nanosecond time-resolved structural measurements of the phase-change alloy Ge2Sb2Te5

Paul Fons, A. V. Kolobov, Toshio Fukaya, Motohiro Suzuki, Tomoya Uruga, Naomi Kawamura, Masafumi Takagaki, Hitoshi Ohsawa, Hajime Tanida, Junji Tominaga

研究成果: Article査読

12 被引用数 (Scopus)


Phase-change alloys constitute the basis for a widening collection of storage technologies both optical and electrical. These uses of phase-change alloys are characterized by switching material properties either by laser irradiation or by an electric current on the nanosecond time scale. Considering the conflicting requirements for high-speed switching, yet long term data storage integrity, a deeper understanding of the switching processes in these materials is essential for insightful application development. We have used synchrotron-based time-resolved X-ray absorption fine structure spectroscopy (XAFS), a technique equally suitable for amorphous and crystalline phases to elaborate details in structural changes in the phase-change process on a sub-nanosecond time scale using optical pump/X-ray probe techniques. In this work, we present initial results of sub-nanosecond laser excitation of the laser-reamorphized state of Ge2Sb2Te5. The technique is general and can be applied to a wide variety of nanoscale structures.

ジャーナルJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
6 B
出版ステータスPublished - 2007 6 22

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)


「Sub-nanosecond time-resolved structural measurements of the phase-change alloy Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。