Effect of Manganese on Magnetic and Electrical Properties of the RMnxT12-x Alloys

W. Suskia,b, K. Wochowskia, T. Mydlarzb and B. Belanc aW. Trzebiatowski Institute of Low Temperature and Structure Research Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland bInternational Laboratory of High Magnetic Fields and Low Temperatures 53-421 Wrocław, Poland cDepartment of Inorganic Chemistry, Ivan Franko National University of L'viv 790005 L'viv, Ukraine Devoted to memory of late E. Leyarovsky

Full Text PDF

The magnetic and electrical properties of the tetragonal, ThMn12-type RMnxT12-x alloys (R = Y, Ce, Pr, Nd, Sm and T = Fe, Co, Ni) were studied in broad temperature and magnetic field ranges to elucidate an influence of manganese on the magnetic ordering in these materials. Magnetic properties were examined at T=1.7-300K in magnetic field up to 14T, whereas the electrical properties were examined at T=4.2-300K, on the polycrystalline samples. Majority of the samples exhibit ferro- or ferrimagnetic properties. Some samples containing larger concentration of Mn are paramagnetic in the whole temperature range. The electrical resistivity of these alloys shows metallic character.

DOI: 10.12693/APhysPolA.98.505 PACS numbers: 75.20.-g, 75.20.En, 75.50.Ee, 75.50.Gg