Abstract
We investigated the possibility of temperature-dependent lattice distortions in the pyrochlore compoundTb2Ti2O7 by measuring the internal magnetic field distribution, using muon spin resonance, andcomparing it to the susceptibility. The measurements are done at temperatures as low as70 mK and external fields up to 6 kG. We find that the evolution of the width of thefield distribution can be explained by spin susceptibility only, thus ruling out atemperature-dependent hyperfine coupling. We conclude that lattice deformations are absent inTb2Ti2O7.
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