XANES and EXAFS studies on a new superconducting intercalation compound, AgIBi2Sr2CaCu2Oy

Choy Jin-Ho, Kim Dong-Kuk, Park Nam-Gyu, Kim Dong-Hoon, Hwang Seong-Ju, Hwang Sung-Ho, Hwi Hur Nam Hwi Hur

Research output: Contribution to journalArticle

Abstract

A new superconducting intercalation compound, AgIBi2Sr2CaCu2Oy, in which the basal spacing is increased by 7.352 Å, has been prepared from the mixture of polycrystalline Bi2Sr2CaCu2Oy and Ag powder under iodine vapor at 190°C in an ambient atmosphere. The X-ray absorption studies on I LI- and Ag K-edges indicate that there is no charge-transfer between the intercalated guest species, AgI and host layer. A slight Tc depression (ΔTc∼13K) upon AgI intercalation is, therefore, probably due to the weakening of interlayer coupling, but the hole donation to the host upon oxygen intercalation may not be excluded.

Original languageEnglish
Pages (from-to)1023-1024
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume235-240
Issue numberPART 2
DOIs
Publication statusPublished - 1994 Dec

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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