Magnetic Properties of RCuGe (R=Pr, Nd, Gd, Tb, Dy, Ho, Er) Compounds |
| S. Baran1, J. Leciejewicz2, N. Stüsser3, A. Szytuła1, Z. Tomkowicz1 and A. Zygmunt4 1Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland 2Institute of Nuclear Chemistry and Technology, Warszawa, Poland 3ΒΕΝSC, Hahn-Meitner Institute, Berlin-Wannsee, Germany 4Institute of Low Temperature Structure Research, Polish Academy of Sciences, Wrocław, Poland |
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| The magnetic properties including the magnetic structure were determined by magnetometric and neutron diffraction measurements of the polycrystalline samples. RCuGe compounds are antiferromagnets at low temperatures, with TN ranging from 2.2 K for R = Pr to 17 K for R = Gd. The external magnetic field causes a change in the type of the magnetic ordering from antiferro- to ferromagnetic state. From the neutron diffraction data the magnetic structure of all RCuGe compounds are determined. In the case of ErCuGe below TN an additional phase transition is observed. The obtained experimental data are discussed in terms of an exchange interaction of the RKKY-type and crystalline electric field. |
| DOI: 10.12693/APhysPolA.92.271 PACS numbers: 75.30.Cr, 75.30.Kz, 75.50.Ee |