Structure, magnetic, and electrical properties of the LnAg{sub 6}In{sub 6} intermetallics (Ln = La, Ce, Pr, and Nd)

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1999.8250· OSTI ID:679232

Zaremba, V I; Kalychak, Y M; Galadzhun, Y V ^[1]; Suski, W ^[2]; Wochowski, K ^[2]

---

1. Lviv State Univ. (Ukraine). Dept. of Inorganic Chemistry
2. Polish Academy of Sciences, Wroclaw (Poland). W. Trzebiatowski Inst. of Low Temperature and Structure Research

Tetragonal LnAg{sub 6}In{sub 6} compounds have been obtained for the first time for Ln = La, Pr, and Nd. CeAg{sub 6.4}In{sub 5.6} has slightly different stoichiometry, and a Pr compound also exists with this composition. These materials exhibit ThMn{sub 12} type structure (I4/mmm). LaAg{sub 6}In{sub 6} is diamagnetic whereas other compounds are paramagnetic following the Curie-Weiss law above 100 K. For paramagnetic compounds the effective magnetic moments are fairly close to free ion values and Weiss constants are very small. NdAg{sub 6}In{sub 6} exhibits in the {chi}(T) plot a maximum at 5 K which most probably corresponds to the Neel point. At 1.7 K the magnetization of the paramagnetic samples linearly depends on magnetic field strength up to 5 T. The temperature dependence of the electrical resistivity, {rho}(T), suggests a metallic character of all compounds without any indication of superconducting transition. The electrical resistivity of PrAg{sub 6.4}In{sub 5.6} is slightly higher than that for PrAg{sub 6}In{sub 6} and it is most probably related to some disorder in an occupation of the crystallographic positions. 7 refs., 6 figs., 1 tab.

• OSTI ID: 679232
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 145; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
INDIUM ALLOYS
INTERMETALLIC COMPOUNDS
MAGNETIC SUSCEPTIBILITY
RARE EARTH ALLOYS
SILVER ALLOYS
STOICHIOMETRY
TEMPERATURE DEPENDENCE