STUDY UTILIZING MOSSBAUER SPECTROMETRY OF SN-119(4-STRUCTURE COMPOUNDCONTAINING TETRAVALENT IRON() DIAMAGNETIC PROBES OF A PEROVSKITE)

Authors
DEMAZEAU G FABRITCHNYI PB FOURNES L PRESNIAKOV IA DARRACQ S GORKOV VP POKHOLOK KV ETOURNEAU J
Citation
G. Demazeau et al., STUDY UTILIZING MOSSBAUER SPECTROMETRY OF SN-119(4-STRUCTURE COMPOUNDCONTAINING TETRAVALENT IRON() DIAMAGNETIC PROBES OF A PEROVSKITE), Solid state communications, 87(2), 1993, pp. 109-114
Citations number
20
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
87
Issue
2
Year of publication
1993
Pages
109 - 114
Database
ISI
SICI code
0038-1098(1993)87:2<109:SUMSOS>2.0.ZU;2-N
Abstract
A complex Sn-119 magnetic hyperfine structure revealing a large distri bution of supertransferred fields (H(Sn4+))-Sn-119 with a mean value o f 220 kOe has been observed at 4.2K in strontium ferrate sample corres ponding to the chemical formula SrFe0.99Sn0.01O2.94. The Mossbauer spe ctrum obtained was analysed using the method of Heese & Rubartsch and interpreted in terms of an electron transfer involving e(g) orbitals o f neighbouring Fe3+ and Fe5+ ions. The mentionned transfer appears to be slowed down or completely stopped in the vicinity of the Sn-119(4+) probe impurity. Moreover, doping with Sn4+ ions is found to contribut e, as well as oxygen deficiency, to a drastic decrease of the Neel tem perature observed.