Abstract
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 language | English |
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Journal | Physical Review Letters |
Volume | 45 |
Issue number | 16 |
Pages (from-to) | 1362-1365 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 1980 |