Glass spheres produced by magnetic levitation method

Naoyuki Kitamura, Masaki Makihara, Takayuki Sato, Miho Hamai, Iwao Mogi, Satoshi Awaji, Kazuo Watanabe, Mitsuhiro Motokawa

研究成果: ジャーナルへの寄稿会議記事査読

21 被引用数 (Scopus)

抄録

Melting of glass levitated in high magnetic fields has been performed by using a hybrid magnet and a CO2 laser. A sphere of an optical glass (BK7) has been obtained through melting and cooling without any crucible. Raman scattering and electron spin resonance (ESR) of the glass sphere showed no spatial anisotropy with respect to the applied field. Microspheres of binary sodium tellurite glass were also obtained for the first time by an evaporation-condensation process in high magnetic fields. Thermal convection was suppressed under a magnetic force of -0.8g. The size of microspheres produced under the magnetic force was about 500 nm at most. This size is one-half the size of spheres produced without a magnetic field. Raman scattering measurements on microspheres produced under the magnetic field showed different spectra from those without a magnetic field. The difference is due to a deficiency of sodium ions in the spheres produced without a magnetic field.

本文言語英語
ページ(範囲)624-629
ページ数6
ジャーナルJournal of Non-Crystalline Solids
293-295
1
DOI
出版ステータス出版済み - 11月 2001
外部発表はい
イベント8th International Conference on Non-Cristalline Materials (NCM-8) - Aberystwyth, 英国
継続期間: 8月 6 20008月 11 2000

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • 凝縮系物理学
  • 材料化学

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