Single crystal growth of CeTAl3 (T = Cu, Ag, Au, Pd and Pt)

JOURNAL OF ALLOYS AND COMPOUNDS

卷:688

Article

Franz, C.^1,2  Senyshyn, A.²  Regnat, A.¹  Duvinage, C.¹  Schoenmann, R.¹  Bauer, A.¹  Prots, Y.³  Akselrud, L.³  Hlukhyy, V.⁴  Baran, V.⁴  Pfleiderer, C.¹ 

[1] Tech Univ Munich, Phys Dept, D-85747 Garching, Germany

[2] Tech Univ Munich, Heinz Maier Leibnitz Zentrum MLZ, D-85748 Garching, Germany

[3] MPI CPFS, D-01187 Dresden, Germany

[4] Tech Univ Munich, Fak Chem, D-85747 Garching, Germany

关键词: Float zone technique;    Single crystal growth;    Rare earth compounds;    Magnetic materials;    Crystal structure determination;    Electrical resistivity;   

DOI  :  10.1016/j.jallcom.2016.07.071

来源: Elsevier

【 摘 要 】

We report single crystal growth of the series of CeTAl3 compounds with T = Cu, Ag, Au, Pd and Pt by means of optical float zoning, where high crystal quality was confirmed in a thorough characterization process. With the exception of CeAgAl3, all compounds crystallize in the non-centrosymmetric tetragonal BaNiSn3 structure (space group: I4mm, No. 107), whereas CeTAl3 adopts the related orthorhombic PbSbO2Cl structure (Cmcm, No. 63). An attempt to grow CeTAl3 resulted in the composition CeNi2Al5. Low temperature resistivity measurements down to similar to 0.1 K did not reveal evidence suggestive of magnetic order in CePtAl3 and CePdAl3. In contrast, CeAuAl3, CeTAl3 and CeAgAl3 display signatures of magnetic transitions at 1.3 K, 2.1 K and 3.2 K, respectively. This is consistent with previous reports of antiferromagnetic order in CeAuAl3 and CeCuAl3 as well as ferromagnetism in CeAgAl3, respectively. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free