Lock-in transitions in ErNi2B2C and TbNi2B2C
Abstract
High resolution x-ray magnetic scattering has been used to determine the variation with temperature of the magnetic modulation vector, tau, in ErNi2B2C and TbNi2B2C to study the interplay between the weakly ferromagnetic (WFM) phase and proposed lock-in transitions in these materials. At temperatures below the WFM transitions, the modulation wave vectors are within the resolution limit of the commensurate values 11/20 and 6/11 for ErNi2B2C and TbNi2B2C, respectively.
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