Abstract
The supertransferred hyperfine fields at Sb5+ in LiFe5O8, CoFe2O4, and YIG have been determined using Sb Mössbauer spectroscopy. In contrast to CoFe2O4, NiFe2O4, and YIG, the small, average hyperfine field of ∼100 kOe at Sb5+ in LiFe5O8 requires the existence of significant local order and indicates that the clustering of Li1+ about Sb5+ is approximately ten times as large as that expected for a random intrasite cation distribution, in agreement with the known strong influence of Sb substitution in destroying the Li:Fe ordering. The decrement in the hyperfine field at Sb5+ due to an A‐site Co2+ is also found to be larger than that due to Ni2+.
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