Publications in Scientific Journals:

R. Lackner, M. Sieberer, H. Michor, G. Hilscher, E. Bauer, P.S. Salamakha, O.L. Sologub, K. Hiebl:
"Low temperature properties of the ternary compounds CePt2B and CePt3B";
Journal of Physics: Condensed Matter, 17 (2005), S905 - S910.

English abstract:
Low temperature properties of the ternary compounds CePt2B and CePt3B
R Lackner1, M Sieberer1, H Michor1, G Hilscher1, E Bauer1,4, P S Salamakha2, O L Sologub2 and K Hiebl3
1 Institute of Solid State Physics, Vienna University of Technology, A-1040 Wien, Austria
2 Department of Chemistry, Institute of Nuclear Technology, P-2686 Sacavem, Portugal
3 Institute of Physical Chemistry, University Vienna, A-1090 Wien, Austria

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

Received 5 January 2005
Published 4 March 2005
Print publication: Issue 11 (23 March 2005)

Abstract. Ground state properties of ternary CePt2B and CePt3B have been characterized from studies of various bulk properties. Both compounds order antiferromagnetically below 2.1 and 7.5 K, respectively, and the latter exhibits an additional phase transition at T1 = 4.5 K. The spin wave dispersion relation of these systems is gapped, with \Delta \approx 1 and \approx 7~{\mathrm {K}} , for CePt2B and CePt3B, respectively. Kondo-type interaction and crystal field splitting are present, reducing the absolute values of the ordered moments. The characteristic temperatures are TK = 3.5-5 K for the former and T_{\mathrm {K}} \approx 6\mbox {--}7 K for the latter.

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