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By measuring the polarisation of neutrons transmitted through a USb single crystal, evidence for a second phase transition at T = 142 K has been discovered in this antiferromagnetic actinide compound. The measurements show that a beam of polarised neutrons abruptly starts to become depolarised at T*. A number of other measurements find anomalies at T* and it is proposed that the transition is related to dephasing between the components of the triple-k structure known to exist in USb. This dynamic effect causes the formation of fluctuating domain walls containing ferro-magnetic components, which then depolarise neutrons.

Additional information

Authors: LANDER G H, JRC Karlsruhe (DE);SHAPIRO S M, Brookhaven National Laboratory, New York (US)
Bibliographic Reference: Paper presented: International Conference on Neutron Scattering, Sendai (JP), October 11-14, 1994
Availability: Available from (1) as Paper EN 38678 ORA
Record Number: 199411423 / Last updated on: 1994-12-06
Original language: en
Available languages: en