Magnetic Properties of Ternary Gallides of type RNi4Ga (R = Rare earths)

Details Magnetic Properties of Ternary Gallides of type RNi4Ga (R = Rare earths) Magnetic Properties of Ternary Gallides of type RNi4Ga (R = Rare earths)

2005-11-14

arxiv.org/abs/cond-mat/0511335v1

Physics

Condensed Matter

Strongly Correlated Electrons

14 Pages 6 Figures 1 Table

Scientific paper

10.1016/j.ssc.2005.11.005

The magnetic properties of RNi4Ga (R = La, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm and Lu) compounds have been investigated. These compounds form in a hexagonal CaCu5 type structure with a space group P6/mmm. Compounds with the magnetic rare earths, R = Nd, Sm, Gd, Tb, Dy, Ho, Er and Tm, undergo a ferromagnetic transition at 5 K, 17 K, 20 K, 19 K, 12 K, 3.5 K, 8 K and 6.5 K, respectively. The transition temperatures are smaller compared to their respective parent compounds RNi5. PrNi4Ga is paramagnetic down to 2 K. LaNi4Ga and LuNi4Ga are Pauli paramagnets. All the compounds show thermomagnetic irreversibility in the magnetically ordered state except GdNi4Ga.

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