119Sn Mössbauer studies in antiferromagnetic La2CuO4

Moshe P. Pasternak*, R. D. Taylor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Mössbauer Spectroscopy (MS) studies of 119Sn were carried out in antiferromagnetic La2(Cu.99Sn.01)O4. The 1 at% 119Sn4+ impurity in the form of SnO2 was first diffused in CuO, and its substitution for Cu2+ was confirmed. Spectra recorded at T> 120 K show a single site quadrupole splitting. At T < 120 K, a magnetic interaction is observed, reaching a saturation with hyperfine field, Heff = 8.7 KOe at T ≤ 30 K. From the combined quadrupole-magnetic interaction at T ≤ TN, both the η-parameter and the angle θ{symbol} formed by qzz and Heff were determined. The significance of the transferred hyperfine interaction in terms of spin-structure is outlined. The feasibility of applying 119Sn MS as a microscopic probe in the Cu-O layers and its comparison with corresponding 57Fe MS is discussed.

Original languageEnglish
Pages (from-to)33-36
Number of pages4
JournalSolid State Communications
Volume73
Issue number1
DOIs
StatePublished - Jan 1990

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