Observation of the anisotropic spin-glass transition and transverse spin ordering in pseudo-brookite through muon spin relaxation

C. Boekema, V.A.M. Brabers, R.L. Lichti, A.B. Denison, D.W. Cooke, R.H. Heffner, R.L. Hutson, M.E. Schillaci, D.E. MacLaughlin, S.A. Dodds

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Abstract

Zero-field longitudinal muon-spin-relaxation (µSR) experiments have been performed on single crystals of pseudo-brookite (Fe2-xTil+x O 5; x=0.25), an anisotropic spin-glass system. The spinglass temperature (Tg) is determined to be 44.0±0.5K. Above Tg, a distinct exponential muon-spin-relaxation rate (¿) is observed, while below Tg a square-root exponential decay is seen, indicating fast spin fluctuations in the ‘frozen’ state. Near 8K, a maximum in ¿ is observed, which is due to transverse spin ordering at these low temperatures. Even near Tg, ¿ is very low (
Original languageEnglish
Pages (from-to)369-374
JournalHyperfine Interactions
Volume31
Issue number1-4
DOIs
Publication statusPublished - 1986

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