Lock-in transitions in ErNi2B2C and TbNi2B2C
C. Detlefs (ESRF) C. Song (Ames Lab) S. Brown, P. Thompson (XMaS CRG,, ESRF), A. Kreyssig (TU Dresden), S. L. Bud'ko, and P. C. Canfield (Ames Lab)
TL;DR
This study uses high-resolution x-ray magnetic scattering to investigate temperature-dependent magnetic modulation vectors in ErNi2B2C and TbNi2B2C, revealing lock-in transitions and their relation to weakly ferromagnetic phases.
Contribution
It provides detailed measurements of magnetic modulation vectors across temperature ranges, clarifying the nature of lock-in transitions in these compounds.
Findings
Modulation vectors approach commensurate values below WFM transition temperatures.
Lock-in transitions are observed near the WFM phases.
Magnetic structures are characterized by temperature-dependent modulation vectors.
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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Taxonomy
TopicsMagnetic Properties of Alloys · Rare-earth and actinide compounds · Magnetic properties of thin films