Unusual Critical Behavior of the Diluted Uniaxial Dipolar Ferromagnet LiTb0.3Y0.7F4

P. Seiden, J. Seiden, Ib Laursen

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The experimental critical behavior of the susceptibility of LiTb0.3Y0.7F4 is described by the power law χ=Γ[(T-Tc) / Tc]-γ with Tc=0.520±0.003 K and γ=1.80±0.04. This behavior is dramatically different from that previously observed in LiTbF4 and is evidence of a departure from marginal dimensionality when magnetic ions have been randomly replaced by nonmagnetic ions. Series expansion of (χT)-1 in powers of T-1 for a diluted Ising dipolar ferromagnet gives a good description of experimental results described in this Letter.
Original languageEnglish
JournalPhysical Review Letters
Issue number16
Pages (from-to)1362-1365
Publication statusPublished - 1980

Bibliographical note

Copyright (1980) by the American Physical Society.

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