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Title: Influence of Electron Doping on Magnetic Order in CeRu2Al10

The effect of electron doping by the substitution of Rh for Ru on unconventional magnetic order in CeRu2Al10 was investigated via neutron powder diffraction. In Ce(Ru1-xRhx)2Al10 with x = 0.05, 0.12, and 0.2, reorientation of the ordered moment from the c- to the a-axis takes place in all samples, while the ordering vector q=(0 1 0) remains unchanged within this concentration range. The moment reorientation is accompanied by an enhancement in its size by a factor of ~2.4, from μ=0.43 μB at x=0 to μ =1.06, 1.04, and 1.02 μB for x=0.05, 0.12 and 0.2, respectively. The continuous decrease in N´eel temperature T0(TN), despite an abrupt increase in μ , underlines the strong anisotropy in the exchange interaction in CeRu2Al10, and the fact that this anisotropy is easily suppressed by electron doping.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [3] ;  [3] ;  [1] ;  [4] ;  [4] ;  [5] ;  [5] ;  [5] ;  [6] ;  [6] ;  [7] ;  [7]
  1. Japan Atomic Energy Agency (JAEA), Tokai (Japan)
  2. Alternative Energies and Atomic Energy Commission (CEA), Saclay (France). Laboratoire Leon Brillouin; Tohoku Univ., Sendai (Japan). Dept. of Physics
  3. Alternative Energies and Atomic Energy Commission (CEA), Saclay (France). Laboratoire Leon Brillouin
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  5. Japan Atomic Energy Agency (JAEA), Tokai (Japan). Advanced Science Research Center
  6. Kochi University, Kochi (Japan). Graduate School of Integrated Arts and Sciences
  7. Hiroshima Univ., Higashi-Hiroshima (Japan). Department of Quantum Matter
Publication Date:
OSTI Identifier:
1159438
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Journal of the Physical Society of Japan
Additional Journal Information:
Journal Volume: 83; Journal Issue: 10; Journal ID: ISSN 0031-9015
Publisher:
Physical Society of Japan
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE