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Property measurements and solidification studies by electrostatic levitation.

Paul-François Paradis1, Jianding Yu, Takehiko Ishikawa

  • 1ISS Science Project Office, Tsukuba Space Center, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan. paradis.paulfrancois@jaxa.jp

Annals of the New York Academy of Sciences
|January 13, 2005
PubMed
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Japan

Area of Science:

  • Materials Science
  • Physics

Background:

  • Advanced materials research requires specialized equipment for studying substances under extreme conditions.
  • Containerless processing is crucial for accurate property measurements of high-temperature materials.

Purpose of the Study:

  • To introduce novel electrostatic levitation furnaces developed by the National Space Development Agency of Japan.
  • To demonstrate the capabilities of these furnaces for materials property measurement, solidification studies, and atomic structure research.

Main Methods:

  • Development and implementation of new electrostatic levitation furnace techniques.
  • Processing of Barium Titanate (BaTiO3) using containerless solidification.
  • Measurement of density for solid, liquid, and undercooled phases of BaTiO3.

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Main Results:

  • Successful contamination-free processing of BaTiO3, including high vapor pressure ceramics.
  • Containerless solidification yielded micrometer-size particles and a glass-like phase.
  • The resulting glass-like phase exhibited a giant dielectric constant over 100,000.

Conclusions:

  • The new electrostatic levitation furnaces offer unique capabilities for advanced materials research.
  • Containerless processing enables accurate characterization of high-temperature materials.
  • BaTiO3 processed via this method shows exceptional dielectric properties.