Author/Authors :
Szytu?a، نويسنده , , A. and Kaczorowski، نويسنده , , D. and Gondek، نويسنده , , ?. and Pikul، نويسنده , , A. and Arulraj، نويسنده , , A. and Ba?anda، نويسنده , , M. E. Baran and I. El-Markaby، نويسنده , , S. and Penc، نويسنده , , B.، نويسنده ,
Abstract :
X-ray and neutron diffraction, magnetization, magnetic susceptibility and electrical resistivity measurements were performed on polycrystalline samples of PrNi2Ge2, PrRu2Ge2 and PrRh2Ge2. All the investigated compounds crystallize with a tetragonal structure of the ThCr2Si2-type. All of them exhibit metallic-like electrical conductivity and order magnetically at low temperatures, namely PrNi2Ge2 and PrRh2Ge2 are antiferromagnetic below TN = 23.5 and 45 K, respectively, while PrRu2Ge2 is a ferromagnet with TC = 14.8 K. The neutron diffraction data indicated a modulated antiferromagnetic structure in PrNi2Ge2 in the entire ordered region. For PrRh2Ge2 a collinear antiferromagnetic ordering was derived below Tt = 30 K and a sine-modulated ordering above that temperature. The neutron diffraction corroborated a simple ferromagnetic structure in PrRu2Ge2.
Keywords :
A. Rare-earth intermetallics , B. Thermodynamic and thermochemical properties , F. Diffraction , B. Magnetic properties
