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Static and dynamical properties of the magnetic moment system of pyrochlorecompound Tb2Ti2O7 with strong magnetic frustration, have been investigated downto the temperature T=0.4 K by neutron scattering on a single crystal sample.The scattering vector (Q)-dependence of the magnetic scattering intensitybecomes appreciable with decreasing T at around 30 K, indicating thedevelopment of the magnetic correlation. From the observed energy profiles, theelastic, quasi elastic and inelastic components have been separately obtained.The quasi elastic component corresponds to the diffusive motion of the magneticmoments within the lowest states, which are formed of the lowest energy levelsof Tb3+ ions. Magnetic correlation pattern which can roughly reproduce theQ-dependence of the scattering intensities of the elastic and quasi elasticcomponent is discussed based on the trial calculations for clusters of 7moments belonging to two corner-sharing tetrahedra. A possible origin of theglassy state, which develops at around 1.5 K with decreasing T is discussed.Comment: 10 pages, 12 figures, to be published in J. Phys. Soc. Jpn.  71(2002)No.2 59

Static Correlation and Dynamical Properties of Tb3+-moments in Tb2Ti2O7–Neutron Scattering Study–

Static Correlation and Dynamical Properties of Tb³⁺-moments in Tb₂Ti₂O₇–Neutron Scattering Study–