Hydrothermal Synthesis and Crystal Structure of a (Ba0.54K0.46)4Bi4O12 Double-Perovskite Superconductor with Onset of the Transition Tc ∼30 K

Md Saiduzzaman, Hikaru Yoshida, Takahiro Takei, Sayaka Yanagida, Nobuhiro Kumada, Masanori Nagao, Hisanori Yamane, Masaki Azuma, Mirza H.K. Rubel, Chikako Moriyoshi, Yoshihiro Kuroiwa

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A new superconducting double perovskite was successfully synthesized by a low-temperature hydrothermal reaction at 240 °C. The crystal structure refinement of this double perovskite was done by single-crystal X-ray diffraction, and it had a cubic unit cell of a = 8.5207(2) Å with space group Im3 m (No. 229). This superconducting double-perovskite chemical composition was estimated by electron probe microanalysis and was similar to the refined data. The superconducting transition temperature of the double perovskite was ∼30 K; the electrical resistivity began to fall at ∼25 K, and zero resistivity occurred below 7 K. Moreover, temperature-dependent resistivity under various magnetic fields and isothermal magnetization measurements ensured the nature of a type II superconductor for the sample. Finally, the metallic nature of the material was investigated by a first-principles study.

Original languageEnglish
Pages (from-to)11997-12001
Number of pages5
JournalInorganic chemistry
Volume58
Issue number18
DOIs
Publication statusPublished - 2019 Sep 16

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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