Complex magnetic ordering in CeGe1.76 studied by neutron diffraction

W. T. Jayasekara, W. Tian, H. Hodovanets, P. C. Canfield, S. L. Bud'ko, A. Kreyssig, and A. I. Goldman
Phys. Rev. B 90, 134423 – Published 29 October 2014

Abstract

Neutron diffraction measurements on a single crystal of CeGe1.76 reveal a complex series of magnetic transitions at low temperature. At TN7 K, there is a transition from a paramagnetic state at higher temperature to an incommensurate magnetic structure characterized by a magnetic propagation vector (0 0 τ) with τ14 and the magnetic moment along the a axis of the orthorhombic unit cell. Below TLI5 K, the magnetic structure locks in to a commensurate structure with τ=14 and the magnetic moment remains along the a axis. Below T4 K, we find additional half-integer and integer indexed magnetic Bragg peaks consistent with a second commensurately ordered antiferromagnetic state.

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  • Received 25 August 2014
  • Revised 1 October 2014

DOI:https://doi.org/10.1103/PhysRevB.90.134423

©2014 American Physical Society

Authors & Affiliations

W. T. Jayasekara1, W. Tian2, H. Hodovanets1, P. C. Canfield1, S. L. Bud'ko1, A. Kreyssig1, and A. I. Goldman1

  • 1Ames Laboratory, USDOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
  • 2Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

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Issue

Vol. 90, Iss. 13 — 1 October 2014

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