High-resolution resonant magnetic x-ray scattering on TbNi2B2C: Determination of the modulation wave vector in the orthorhombic phase

C. Song, D. Wermeille, A. I. Goldman, P. C. Canfield, J. Y. Rhee, and B. N. Harmon
Phys. Rev. B 63, 104507 – Published 14 February 2001
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Abstract

Resonant magnetic x-ray scattering measurements have been performed on a single crystal of TbNi2B2C to uniquely determine the modulation wave vector in the low-temperature orthorhombic phase. Below the transition temperature of 14.4(±0.1)K, two magnetic satellite peaks develop, centered on (h00)orth charge reflections. Our study shows that the longitudinal modulation of the magnetic moment is along the longer basal plane axes of the orthorhombic phase. Power law fits to the temperature dependence of the structural distortion, a/b1, and the magnetic scattering intensity result in the same exponent, β, and transition temperature evidencing explicitly that the structural phase transition is magneto-elastic in origin.

  • Received 25 August 2000

DOI:https://doi.org/10.1103/PhysRevB.63.104507

©2001 American Physical Society

Authors & Affiliations

C. Song, D. Wermeille, A. I. Goldman, P. C. Canfield, J. Y. Rhee*, and B. N. Harmon

  • Ames Laboratory-US DOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011

  • *On leave from Department of Physics, Hoseo University, Asan, Choongnam 336-795, Korea.

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Vol. 63, Iss. 10 — 1 March 2001

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