Crystal structure, magnetic susceptibility and electrical conductivity of EuAuGe: a new ordered version of the CeCu2-type structure
- 1 January 1995
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 5 (3), 505-508
- https://doi.org/10.1039/jm9950500505
Abstract
The ternary germanide EuAuGe has been prepared from the elemental components in a tantalum tube at 1070 K. It was investigated by X-ray diffraction on both powder and single crystals. The crystal structure was determined from four-circle diffractometer data: Imm2, a= 460.1(1) pm, b= 737.1(1) pm, c= 788.1(2) pm, V= 0.2673(2) nm3, Z= 4, R= 0.0288 for 1069 F2 values and 22 variables. EuAuGe crystallizes in a new ternary ordered version of the CeCu2 type. Its structure is compared with the related TiNiSi-type. Susceptibility measurements show Curie-Weiss behaviour above 40 K with µexp= 7.4(1)µB, indicating Eu2+. EuAuGe orders ferromagnetically at Tc= 34(1) K. Electrical conductivity measurements are compatible with metallic behaviour.Keywords
This publication has 30 references indexed in Scilit:
- Mixed valency and first order phase transition in EuPdAsZeitschrift für Physik B Condensed Matter, 1992
- EuPtP, Eu1-xGdxPtP und Eu0,5Sr0,5PtP: Strukturen und ZwischenvalenzZeitschrift für anorganische und allgemeine Chemie, 1991
- EuPtP: a new mixed valent europium-systemZeitschrift für Physik B Condensed Matter, 1989
- Magnetische Eigenschaften der Verbindungsreihe EuBX mit B = Element der ersten Neben‐ und X = Element der fünften HauptgruppeZeitschrift für anorganische und allgemeine Chemie, 1984
- The phase diagram of the Eu-Au systemJournal of the Less Common Metals, 1984
- Equiatomic ternary rare earth-transition metal silicides, germanides and gallidesJournal of the Less Common Metals, 1982
- LaIrSi with an ordered SrSi2 derivative structureActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1982
- Über Oberflächenverbindungen von Übergangsmetallen, III. Reaktionen reduzierter PHILLIPS‐KontakteZeitschrift für anorganische und allgemeine Chemie, 1969
- On the occurrence of the MX2 phases of the rare earths with the IB, IIB and IIIB group elements and their crystal structuresJournal of the Less Common Metals, 1968
- The crystal structure of CeCu2Acta Crystallographica, 1961