Magnetic properties and Moessbauer studies of Bi2Sr3Fe2O9+δ, isostructural with Bi-2122 superconductors

D. Hechel*, I. Felner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We have investigated Bi2Sr3Fe2O9+δ materials by complementary experimental techniques. The materials are derived from the superconducting Bi2Sr2CaCu2O8 (Bi-2122) by replacing all Cu by Fe and Ca atoms by Sr. The materials studied are not superconducting, but rather magnetically ordered. Moessbauer spectroscopy (MS) and magnetic-susceptibility studies reveal, that the magnetic ordering temperature (TN) is very sensitive to oxygen concentration. TN = 100(5) K (determined by MS) for the oxygen-rich sample, is shifted towards 610 K when oxygen is depleted. Magnetic susceptibility data yield somewhat lower TN values (80 and 520 K, respectively).

Original languageEnglish
Pages (from-to)410-414
Number of pages5
JournalPhysica B: Condensed Matter
Volume262
Issue number3-4
DOIs
StatePublished - Apr 1999

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