Novel ternary compound Ce4Pt9Al13: Crystal structure, physical properties

Autor(en)

Yu. Morozova, Alexander V Gribanov, Elena V. Murashova, S. Dunaev, Andrij Grytsiv, Peter Franz Rogl, Gerald Giester, Dariusz Kaczorowski

Abstrakt

The crystal structure of the novel Al-rich intermetallic phase Ce

₄Pt

₉Al

₁₃ was determined from single-crystal X-ray diffraction data and confirmed by powder X-ray diffraction. The compound crystallizes with its own structure type, which is a “site exchange” variant of the Ho

₄Ir

₁₃Ge

₉-type (Pearson symbol oP52, space group Pmmn, No. 59, Z = 2, lattice parameters: a = 4.1826(1) Å b = 11.4424(3) Å c = 19.8475(5) Å V = 949.88(7) Å

³). The magnetic properties of Ce

₄Pt

₉Al

₁₃ were determined in the temperature range 1.72–400 K. Down to the lowest temperatures studied, the compound shows a Curie-Weiss paramagnetic behavior with strong crystalline electric field contribution observed below about 200 K. The electrical conductivity in Ce

₄Pt

₉Al

₁₃ has metallic character, and at low temperatures it is governed by an interplay of strong crystal field and Kondo interactions.

Organisation(en)

Institut für Materialchemie, Institut für Mineralogie und Kristallographie

Externe Organisation(en)

Lomonosov Moscow State University (MSU), Polish Academy of Sciences (PAS)

Journal

Journal of Alloys and Compounds

Band

767

Seiten

496-503

Anzahl der Seiten

8

ISSN

0925-8388

DOI

https://doi.org/10.1016/j.jallcom.2018.07.146

Publikationsdatum

10-2018

Peer-reviewed

Ja

ÖFOS 2012

104003 Anorganische Chemie, 104011 Materialchemie, 105113 Kristallographie

Schlagwörter

ASJC Scopus Sachgebiete

Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Materials Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/f25f368d-0417-42e6-bc41-76df5014b8c9