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Transition of 12CaO · 7Al2O3 electrical insulator to the permanent semiconductor using via thermo-chemical reduction treatment

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2010, 20(4), pp.178~184
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

정준호 1,  은종원 1,  오동근 1,  김광진 2,  홍태의 2,  Seong-Min Jeong ORD ID 3,  Bonggeun Choi 1,  Kwang Bo Shim 1

1한양대학교
2한국세라믹기술원 기업협력센터
3한국세라믹기술원

Accredited

ABSTRACT

The 12CaO · 7Al2O3(C12A7) powders were successfully synthesized using combustion method with microwaveassistant and C12A7:H were fabricated by post-annealed process in Ar/H atmosphere. X-ray diffraction patterns and TGDSC were used for investigating to the precursors of crystalline and reaction depending on temperature. C12A7:H that was treated post-annealed process were investigated TG-MS and Hall-measurement for confirming H ions doping and checking electrical resistivity of C12A7:H. H ion substituted to O 2− ions in the C12A7 cages were confirmed at 289.5oC by TG-MS and C12A7:H calcined at 1000oC in Ar/H = 8 : 2 atmosphere for 8~10 h has low electrical resistivity about 102Ω · cm at room temperature.

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