Magnetoresistivity studies of intermetallic uranium compounds and their impact on the understanding of exhibited phenomena

Crystal structure and physical properties of a novel Kondo antiferromagnet: U3Ru4Al12

“…Although the TMR magnitudes are rather small, the increasing negative magnitude of TMR in the antiferromagnetic region below T N is difficult to explain. This behaviour can be compared with that of another antiferromagnet UNiAl which revealed a similar peak close to T N in ρ/ρ 0 (T ) [19], but in contrast to U 3 Ru 4 Al 12 its TMR decreased in absolute value below T N , reaching very small values close to T = 0 K. Nevertheless, we think that, as for UNiAl, the occurrence of the peak in ρ/ρ 0 (T ) just below T N for U 3 Ru 4 Al 12 is due to the change in the Brillouin zone due to the forming of a complex magnetic structure in the antiferromagnetic region.…”

Thermoelectric power quantum oscillations in the ferromagnet UGe$_2$

“…In the resistivity (Fig. 1(b)) a small hump of ρ at T C for j b appears just below T C which corresponds to the opening of a gap when entering in the ordered state 16,[38][39][40] . Similar anomalies in ρ(T ) appear e.g.…”

Ninetieth anniversary of Czochralski method

“…It is expected that magnetic refrigeration in several years will be available for consumers as a more efficient and environmentally safe alternative to conventional type refrigerators [43]. Next prospective group of intermetallics for application in spintronics are crystals with layered-like or atomic-chain structures which show the occurrence of a large reduction of the electrical resistivity upon application of a magnetic field called the giant magnetoresistivity [44]. In last years are carried out intensive investigations of the hydrogen storage materials also based on different intermetallics [45].…”