Crystal growth of superconducting La2126 without HIP treatment

Kazuhiro Koike, Takashi Noji, Tadashi Adachi, Yoji Koike

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

Abstract

We have succeeded in the crystal growth of the superconducting La 2-x-yBaxSryCaCu2O6 of the La2126 phase by only the traveling-solvent floating-zone (TSFZ) method without the hot-isostatic-pressure (HIP) treatment. In the TSFZ growth, we added a small amount of B2O3 to the solvent for the stabilization of the growth and used high-pressure oxygen of ∼ 10 atm as a growth atmosphere for the suppression of oxygen defects. We have obtained single crystals with the size of the order of 2×2×3 mm3 and determined the composition to be La1.80Ba0.07Sr0.19Ca 0.97Cu1.97O6 by the inductively-coupled-plasma atomic-emission-spectrometry. The powder x-ray diffraction has revealed that the crystals are of the single phase of La2126 and include no impurity phases such as La2-xMxCuO4 (M: alkaline earth). The as-grown single crystals have shown superconductivity of the bulk with the transition temperature Tc = 20 K.

Original languageEnglish
Title of host publicationLOW TEMPERATURE PHYSICS
Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
Pages503-504
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

  • Crystal growth
  • Cuprate
  • La2126
  • Superconductivity
  • Traveling-solvent floating-zone method

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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