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
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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