Abnormal electrical resistivity of Co-Fe-Si-B-Nb-R alloys in amorphous and crystalline states
Sidorov V. E.
1,2, Rusanov B. A.
1, Petrova S. A.
2,3, Son L. D.
1,2,3, Lad'yanov V. I.
41Ural State Pedagogical University, Ekaterinburg, Russia
2Ural Federal University after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia
3Institute of Metallurgy of Ural Branch of the Russian Academy of Science, Ekaterinburg, Russia
4Udmurt Federal Research Center, Ural Branch Russian Academy of Sciences, Izhevsk, Russia
Email: vesidor@mail.ru, rusfive@mail.ru
Electrical resistivity of Co48Fe25Si4B19Nb4 amorphous alloy and with small additions of rare-earth metals ( = Nd, Sm, Tb, Yb) was studied using the AC four-probe method. It was found that these alloys have a specific behavior of electrical resistivity after crystallization-temperature dependences of resistivity at cooling are non-linear and can be fitted as ln R~ T-1/4. Keywords: amorphous alloys, metallic glasses, electrical resistivity, rare-earth metals.
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