Transition from Mixed-Valence to Trivalent Cerium State in Ce(Ni,Cu)Al Series |
| P. Čermáka, P. Javorskýa and E. Šantaváb
aCharles University in Prague, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic bInstitute of Physics AS CR, v. v. i., Na Slovance 2, 182 21 Prague 8, Czech Republic |
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| In this work we present the study of the part of Ce(Ni,Cu)Al series from the pure CeNiAl to 30% of copper concentration, which illustrates the transition from mixed-valence state of CeNiAl to the trivalent state in CeCuAl. The work is based on X-ray diffraction, magnetization and specific heat measurement. The results indicate smooth transition between the mixed-valence and trivalent cerium state. The specific-heat data reveal increase of the Sommerfeld γ coefficient with copper concentration. |
| DOI: 10.12693/APhysPolA.118.926 PACS numbers: 75.40.Cx, 75.30.Mb |