Journal
Article title
Authors
Title variants
Languages of publication
Abstracts
Single crystals of YbPt_{2}Si_{2} and Yb_{2}Pt_{3}Si_{5} have been prepared by solvent growth method with Sn flux, characterized by X-ray diffraction and by EDX microprobe analysis and investigated by measurement of magnetization, specific heat and electrical resistivity as functions of temperature and magnetic field. YbPt_{2}Si_{2} (Yb_{2}Pt_{3}Si_{5}) crystalizes in the tetragonal CaBe_{2}Ge_{2}-type (orthorhombic U_{2}Co_{3}Si_{5}-type) structure. Both compounds exhibit metallic resistivity behavior without visible anomaly, which could be connected with onset of magnetic ordering. Neither the specific heat shows any sign of magnetic ordering down to 0.5 K. The corresponding temperature dependences of the magnetic susceptibility of both compounds behave qualitatively similar, which is reminiscent of spin fluctuation behavior: a broad maximum at high temperatures, a shallow minimum at lower temperatures, followed by an upturn with further cooling the crystal, which can be suppressed by applying a sufficient magnetic field. The rather low values of the γ-coefficients of the specific heat (~25÷35 mJ·mol·K^{-2}) do not support the mixed valence scenario discussed in literature for YbPt_{2}Si_{2}.
Discipline
Journal
Year
Volume
Issue
Pages
310-311
Physical description
Dates
published
2014-07
Contributors
author
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
author
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
author
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
References
- [1] K. Syassen, G. Wortmann, J. Feldhaus, K.H. Frank, G. Kaindl, Phys. Rev. B 26, 4745 (1982) , doi: 10.1103/PhysRevB.26.4745
- [2] T. Mazet, H. Ihou-Mouko, D.H. Ryan, C.J. Voyer, J.M. Cadogan, B. Malaman, J. Phys.: Condens. Matter 22, 116005 (2010) , doi: 10.1088/0953-8984/22/11/116005
- [3] M. Galli, E. Bauer, St. Berger, Ch. Dusek, M. Della Mea, H. Michor, D. Kaczorowski, E.W. Scheidt, F. Marabelli, Physica B 312-313, 489 (2002) , doi: 10.1016/S0921-4526(01)01481-8
- [4] K. Hiebl, P. Rogl, J. Magn. Magn. Mater. 50, 29 (1985) , doi: 10.1016/0304-8853(85)90084-8
- [5] S.K. Dhar, E.P. Sampathkumaran, N. Nambudripad, R. Vijayaraghavan, Solid State Communications 67, 949 (1988) , doi: 10.1016/0038-1098(88)90463-2
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv126n1150kz