Magnetic properties of ternary gallides of type RNi4Ga (R=rare earths) |
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| Authors: | Devang A Joshi CV Tomy R Nagarajan |
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| Institution: | a Department of Physics, Indian Institute of Technology, Mumbai 400076, India
b Tata Institute of Fundamental Research, Mumbai 400005, India |
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| Abstract: | 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, 17, 20, 19, 12, 3.5, 8 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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| Keywords: | 75 30 Gw 57 60 -d 75 50 Vv 71 20 Lp |
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