[Zurück]

E. Bauer, R. Lackner, G. Hilscher, H. Michor, M. Sieberer, A. Eichler, A. Gribanov, Y. Seropegin, P. Rogl:
"REPt₃Si (RE = La, Pr, Nd, Sm and Gd): isotypes of the heavy fermion superconductor CePt₃Si";
Journal of Physics: Condensed Matter, 17 (2005), S. 1877 - 1888.

E Bauer et al 2005 J. Phys.: Condens. Matter 17 1877-1888

REPt₃Si (RE = La, Pr, Nd, Sm and Gd): isotypes of the heavy fermion superconductor CePt₃Si

E Bauer 1,5, R Lackner1 , G Hilscher 1, H Michor 1, M Sieberer 1, A Eichler 2, A Gribanov 3, Y Seropegin 3 and P Rogl 4
1 Institute of Solid State Physics, Vienna University of Technology, A-1040 Wien, Austria
2 Institute of Applied Physics, University of Braunschweig, D-38106 Braunschweig, Germany
3 Department of Chemistry, Moscow State University, Moscow, Russia
4 Institute of Physical Chemistry, University of Vienna, A-1090 Wien, Austria

5 Author to whom any correspondence should be addressed
E-mail: bauer@ifp.tuwien.ac.at

Received 23 December 2004, in final form 16 February 2005
Published 11 March 2005
Print publication: Issue 12 (30 March 2005)

Abstract.
Novel representatives REPt₃Si (RE = La, Pr, Nd, Sm and Gd) of the CePt₃B type have been synthesized and characterized by means of Rietveld x-ray powder diffraction. Measurements of the magnetic susceptibility, isothermal magnetization, temperature dependent specific heat as well as temperature and field dependent resistivity were employed to derive basic information on the low temperature behaviour. Long range antiferromagnetic order from 2.2 K (CePt₃Si) to 15.1 K (GdPt₃Si) was observed. PrPt₃Si, however, is non-magnetic, at least down to 400 mK, as a consequence of crystalline electric field splitting of the non-Kramers ion Pr³⁺ in tetragonal symmetry. Whilst the ordering temperature of SmPt₃Si appears to be almost unaffected in external fields up to 12 T, magnetic order in GdPt₃Si, although twice as high as for the Sm homologue, is easily suppressed by external magnetic fields due to the absence of anisotropy.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05937871

http://www.iop.org/EJ/abstract/0953-8984/17/12/012