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EFFECTS OF HYDROGEN-CHLORINE RATIO ON CHEMICAL VAPOUR DEPOSITION (CVD) SYNTHESIS OF SUPERCONDUCTING NIOBIUM-GERMANIUM TAPES.

Author(s) : ASANO T., TANAKA Y., TACHIKAWA K.

Type of article: Article

Summary

EIGHT DEPOSITION PARAMETERS CONTROL THE PREPARATION OF NIOBIUM-GERMANIUM TAPES BY CHEMICAL VAPOUR DEPOSITION PROCESSES. IN THE PRESENT PAPER, THE ONLY EFFECT OF THE GAS RATIO OF HYDROGEN TO CHLORINE ON THE SYNTHESIS AND SUPERCONDUCTING PROPERTIES OF NIOBIUM-GERMANIUM TAPES HAS BEEN STUDIED. CRITICAL TEMPERATURE, CRITICAL CURRENT DENSITY, AND GRAIN SIZE OF A15 NIOBIUM-GERMANIUM LAYERS (SEM MICROGRAPHS AND X-RAY POWDER DIFFRACTION PATTERNS FOR GAS RATIO VARYING FROM 5 TO 50) VARY CONSIDERABLY WITH THE GAS RATIO. THE HIGHEST CRITICAL TEMPERATURE, 19 K, WAS OBTAINED FOR NIOBIUM-GERMANIUM TAPES PREPARED WITH A RATIO BETWEEN 20 AND 30. J. V.

Details

  • Original title: EFFECTS OF HYDROGEN-CHLORINE RATIO ON CHEMICAL VAPOUR DEPOSITION (CVD) SYNTHESIS OF SUPERCONDUCTING NIOBIUM-GERMANIUM TAPES.
  • Record ID : 1988-0472
  • Languages: English
  • Source: Cryogenics - vol. 27 - n. 7
  • Publication date: 1987

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