A Co(EV)-rich 2D ferromagnet with magnetoresistance properties Sr3FeCoO7-delta

Authors
Breard, Y Michel, C Maignan, A Raveau, B
Citation
Y. Breard et al., A Co(EV)-rich 2D ferromagnet with magnetoresistance properties Sr3FeCoO7-delta, SOL ST COMM, 118(10), 2001, pp. 517-522
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
118
Issue
10
Year of publication
2001
Pages
517 - 522
Database
ISI
SICI code
0038-1098(2001)118:10<517:AC2FWM>2.0.ZU;2-F
Abstract
The new cobalt IV rich oxide Sr3FeCoO6.94, n = 2 member of the Ruddlesden-P opper series. is reported. Electron and X-ray diffraction confirm the tetra gonal symmetry (space group: I4/mmm, with cell parameters: a = 3.8403(3) An gstrom and c = 20.025(2) Angstrom). The magnetic susceptibility and isother mal magnetisation curves demonstrate the existence of ferromagnetism. The m agnetic behavior, characterized by a glassy state, is closely correlated to a change in the transport properties. Accordingly, the Sr3FeCoO6.94 compou nd exhibits a negative magnetoresistance effect of -24% at 10 K under 7 T. (C) 2001 Elsevier Science Ltd. All rights reserved.