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  Rule, K.C.; Ehlers, G.; Gardner, J.S.; Qiu, Y.; Moskvin, E.; Kiefer, K.; Gerischer, S.: Neutron scattering investigations of the partially ordered pyrochlore Tb₂Sn₂O₇. Journal of Physics: Condensed Matter 21 (2009), p. 486005/1-5

10.1088/0953-8984/21/48/486005

Abstract:
Neutron scattering measurements have been performed on polycrystalline Tb2Sn2O7 at temperatures above and below that of the phase transition, TN = 0.87 K, to investigate further the spin dynamics in the magnetically ordered state. In particular, new neutron spin echo results are presented showing a dependence on Q in the dynamics. We show evidence of the coexistence of static ferromagnetism and dynamically fluctuating spins down to 30 mK and we make a comparison of this partially ordered system to the spin liquid Tb2Ti2O7.