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

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

    Research output: Contribution to journalArticle

    21 Citations (Scopus)

    Abstract

    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
    Volume44
    Issue number10
    DOIs
    Publication statusPublished - 2005 Oct 11

    Fingerprint

    Nanoparticles
    nanoparticles
    synthesis
    Tellurium
    Antimony
    Laser ablation
    tellurium
    antimony
    Pulsed lasers
    Germanium
    Particles (particulate matter)
    laser ablation
    Aerosols
    Argon
    analyzers
    germanium
    pulsed lasers
    aerosols
    Heat treatment
    argon

    Keywords

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

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Synthesis of size- and structure-controlled Ge2Sb 2Te5 nanoparticles. / Choi, Hoon Sang; Seol, Kwang Soo; Takeuchi, Kazuo; Fujita, Junya; Ohki, Yoshimichi.

    In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 44, No. 10, 11.10.2005, p. 7720-7722.

    Research output: Contribution to journalArticle

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