HIGH T//c SUPERCONDUCTIVITIES OF A//2Ba//4Cu//6O//1//4// plus //y.

Shigeyuki Tsurumi, Makoto Hikita, Tsunekazu Iwata, Kouichi Semba, Susumu Kurihara

Research output: Chapter in Book/Report/Conference proceedingChapter

43 Citations (Scopus)

Abstract

Superconductivities of A2//2Ba4//4Cu//6O//1//4// plus //y (0 less than y less than 2. 5, A equals lanthanides except for Pm) compounds are studied through X-ray powder diffraction pattern analysis and electrical resistance measurement. Resultant compounds in case of A equals La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm and Yb except for Ce, Pr, Tb and Lu exhibit both characteristic diffraction patterns for A//2Ba//4Cu//6O//1//4// plus //y, i. e. , oxygen defect perovskite (ODP) and superconducting state. Key structure for realizing high Tc more than 90 K and narrow transition width is confirmed to be related with the ODP phase.

Original languageEnglish
Title of host publicationJapanese Journal of Applied Physics, Part 2: Letters
Pages856-857
Number of pages2
Volume26
Edition5
Publication statusPublished - 1987 May
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)

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