Single-crystal growth of the superconducting Ba1-xK xBiO3 by the floating-zone method

Takashi Noji, Tatsuya Kato, Yoshinori Imai, Yoji Koike

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have successfully grown single crystals of Ba1-xK xBiO3 with the volume of the order of 1 mm3 by the floating-zone method. It was important to use a high-pressure reducing atmosphere and the "twice-scanning" method for the successful growth. The crystal growth was performed under argon pressure of 1.0 MPa. The potassium content of each single crystal is much smaller than that of the feed rod. Single crystals of x = 0.32, 0.42, 0.50 (estimated from the ICP-AES analysis) annealed in flowing oxygen gas show superconductivity with the transition temperature Tc = 29 K, 25 K, 15 K, respectively. From the powder x-ray diffraction analysis and electrical resistivity measurements, each obtained single-crystal has been found to be composed of at least two phases with different x values.

Original languageEnglish
Title of host publicationLOW TEMPERATURE PHYSICS
Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
Pages671-672
Number of pages2
DOIs
Publication statusPublished - 2006 Dec 1
EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
Duration: 2006 Aug 102006 Oct 17

Publication series

NameAIP Conference Proceedings
Volume850
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
CountryUnited States
CityOrlando, FL
Period06/8/1006/10/17

Keywords

  • BaKBiO
  • Floating-zone method
  • Single-crystal growth

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Noji, T., Kato, T., Imai, Y., & Koike, Y. (2006). Single-crystal growth of the superconducting Ba1-xK xBiO3 by the floating-zone method. In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 (pp. 671-672). (AIP Conference Proceedings; Vol. 850). https://doi.org/10.1063/1.2354888