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Magnetic and transport properties of CePt.sub.3./sub.Ge Kondo lattice in crystallineand sub-micron state
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SYSNO ASEP 0386942 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Magnetic and transport properties of CePt3Ge Kondo lattice in crystallineand sub-micron state Author(s) Poltierová Vejpravová, Jana (FZU-D) RID
Prokleška, J. (CZ)
Pospíšil, J. (CZ)
Kitazawa, H. (JP)
Goncalves, A.P. (PT)
Komatsubara, T. (JP)
Ritter, C. (FR)
Isnard, O. (FR)
Sechovský, V. (CZ)Source Title Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 520, Apr (2012), s. 22-29Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords CePt3Ge ; Kondo lattice ; short-range magnetic order ; size effect Subject RIV BM - Solid Matter Physics ; Magnetism CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000300841600004 DOI 10.1016/j.jallcom.2011.11.086 Annotation We have studied a ternary phase of the CePt3±xGe composition, with the maximum values of x=0.2. A series of samples was prepared by arc melting, Czochralski method and splat cooling, and characterized by scanning electron microscopy and X-ray diffraction. The arc-melted samples are well-crystalline and single-phase with slightly varying stoichiometry close to the nominal CePt3Ge, while the splat-cooled samples form an amorphous or a nanocrystalline constitution of the CePt3Ge composition. Measurements of magnetization, specific heat and electrical resistivity were performed in the temp. 0.40 K - 300 K, and magnetic fields up to 9 T. A delicate neutron diffraction experiment down to 70 mK was done, which excluded long-range magnetic order in the CePt3Ge compound. The experiments evidenced, that the CePt3Ge compound can be considered as a Kondo lattice with low-temperature magnetic correlations, and the size effect seems to have minor role in control of the Kondo scattering phenomena. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2013
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