Magneto-History Effect in the TbxGd1-xNi3 Compounds
A. Bajorek, G. Chełkowska, A. Chrobak and M. Kwiecień-Grudziecka
A. Chełkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
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The compounds TbxGd1-xNi3 with a PuNi3-type structure have been obtained. The magnetic properties have been investigated by using SQUID magnetometer (Quantum Design MPMS, temperature from 1.9 K to 300 K and magnetic field up to 7 T). The partial replacement of Gd by Tb atoms is reflected in a decrease of the ordering temperature from 115 K (x = 0.0) to 81 K (x=1.0) as well as the increase of the saturation magnetic moment MS from 6.93 μB/f.u. (x=0.0) to 7.14 μB/f.u. (x=1.0). A large difference of M(T) curves has been noticed between the so-called field cooling-zero field cooling magnetization. The thermomagnetic curves are sensitive to the applied magnetic field and their origin can be understood as the domain-wall pinning effect and as the temperature dependence of coercivity.
DOI: 10.12693/APhysPolA.121.1136
PACS numbers: 71.20.Eh, 75.30.Gw, 75.60.-d