Low temperature crystal structure and local magnetometry for the geometrically frustrated pyrochlore Tb2Ti2O7
de Reotier, P. Dalmas · Yaouanc, A. · Bertin, A. · Marin, C. · Vanishri, S. · Sheptyakov, D. · Cervellino, A. · Roessli, B. · Baines, C.
Original · EN
We report synchrotron radiation diffraction and muon spin rotation (muSR) measurements on the frustrated pyrochlore magnet Tb2Ti2O7. The powder diffraction study of a crushed crystal fragment does not reveal any structural change down to 4 K. The muSR measurements performed at 20 mK on a mosaic of single crystals with an external magnetic field applied along a three-fold axis are consistent with published a.c. magnetic-susceptibility measurements at 16 mK. While an inflection point could be present around an internal field intensity slightly above 0.3 T, the data barely support the presence of a magnetization plateau.
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