Synthesis of size- and structure-controlled Ge2Sb 2Te5 nanoparticles

Hoon Sang Choi*, Kwang Soo Seol, Kazuo Takeuchi, Junya Fujita, Yoshimichi Ohki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


Pulsed laser ablation of Ge2Sb2Te5 target materials at approximately 400 Pa of ambient argon gas produces amorphous nanoparticles with a size distribution of from 4 to 30 nm. Thermal treatment of the nanoparticles in their aerosol states crystallizes the particles to both a hexagonal structure and a face-centered cubic structure at 300°C, while only a face-centered cubic structure results at 400°C. The crystallized nanoparticles were then size-classified by a differential mobility analyzer to produce size- and structure-controlled Ge2Sb2Te 5 nanoparticles. The particles are revealed to consist of germanium, antimony and tellurium by composition analysis using energy dispersive X-ray spectroscopy.

Original languageEnglish
Pages (from-to)7720-7722
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number10
Publication statusPublished - 2005 Oct 11


  • Differential mobility analyzer
  • Energy dispersive X-ray spectroscopy
  • GeSbte
  • Nanoparticles
  • Pulsed laser ablation
  • Size distribution

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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