1. Magnetic behavior of the rare-earth compounds RNiBC by neutron scattering
- Author
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F. Bourdarot, S. Skanthakumar, E. Baggio-Saitovitch, Jeffrey W. Lynn, Qingzhen Huang, D. R. Sanchez, Magnétisme et Diffusion Neutronique (MDN), Modélisation et Exploration des Matériaux (MEM), Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), National Institute of Standards and Technology [Gaithersburg] (NIST), Centro Brasileiro de Pesquisas Físicas (CBPF), Ministério da Ciência e Tecnologia, University of Maryland [College Park], University of Maryland System, and Argonne National Laboratory [Lemont] (ANL)
- Subjects
Physics ,Condensed matter physics ,Ferromagnetism ,Magnetic moment ,Magnetism ,Scattering ,Neutron diffraction ,Antiferromagnetism ,Neutron scattering ,[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] ,Small-angle neutron scattering - Abstract
Neutron diffraction and small angle neutron scattering measurements have been carried out on RNiBC (R=Er, Tb, Dy) to investigate the crystallography, magnetic correlations, and long range magnetic ordering. Crystallographic refinements show a strong boron-carbon and nickel-carbon bonding similar to RNi{sub 2}B{sub 2}C, but the rare-earth-carbon plane exhibits a buckling which does not exist in the RNi{sub 2}B{sub 2}C series. The magnetism in the RNiBC series is quite simple, with a magnetic moment direction going from the a-b plane to the c axis as the atomic number of the rare-earth increases. Er becomes ferromagnetic at T{sub C}=4.6 K, with a saturated moment of 7.2{mu}{sub B} along the c axis. Tb orders ferromagnetically at T{sub C}=15 K. Below 12.5 K an incommensurate modulation develops with a modulation wave vector of (0 0 1/8), as well as an antiferromagnetic component with k=(0 0 1/2). The moments, which vary in both magnitude and direction, are in the a-b plane with an average value of 7.7{mu}{sub B}. DyNiBC exhibits the same behavior, with a T{sub C} and T{sub N} of 17.5 and 13.5 K, respectively.
- Published
- 2001
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