Transport properties of Cu_55Hf_45-xTi_x metallic glasses (CROSBI ID 646676)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa
Podaci o odgovornosti
Ivkov, Jovica ; Ristić, Ramir ; Babić, Emil ; Figueroa, Ignacio
engleski
Transport properties of Cu_55Hf_45-xTi_x metallic glasses
Recent studies of Cu55Hf45-xTix metallic glass (0 ≤ x ≤ 45) [1] indicate the formation of bulk metallic glass (BMG) for 15 ≤ x ≤ 30. In the same compositional range ratio of the glass transition temperature Tg and the temperature of liquid state Tl shows slight maximum consistent with the greatest glass forming ability (GFA). A recent study of the magnetic susceptibility and mechanical properties (Young's modulus and microhardness) showed a uniform change of these properties with x without any special features in the compositional range where the BMGs form [2]. We will present the results of measurement of the electrical resistivity and the Hall coefficient of these alloys as a function of concentration and temperature (80K ≤ T ≤ 300K). These properties, closely related to the electronic structure and dynamics of electrons, monotonously depend on x and show no special features in the area of BMGs. The temperature dependence of resistances is consistent with the effects of the weak initial localization of electrons.The Hall coefficients (RH) are positive, practically independent of temperature and grow approximately linearly with x. So, neither RH nor electrical resistance indicates the formation of BMG. As studied alloys have the same number of electrons per atom e/a, it cannot be associated with BMG formation. [3]. [1] I. A. Figueroa, H. A. Davies, I. Todd, I. A. Verduzco, P. Hawksworth, Adv. In Tech. of Met. and Mat. Proc. J. 8 146-151 (2006) ; [2] R. Ristić, E. Babić, D. Pajić, K.Zadro, I. A. Figueroa, H. A. Davies, I. Todd, A. Kuršumović, J. Alloys Compd. 504S (2010) S194-S197 ; [3] M. Fukuhara, M. Takahashi, Y. Kawazoe, I. Inoue, Appl. Phys. Lett. 90 (2007) 073114.
Hall effect, electrical resistivity, metallic glasses
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
6-6.
2017.
objavljeno
Podaci o matičnoj publikaciji
Symposium in memory of Jovica Ivkov
Popčević, Petar ; Smontara, Ana
Zagreb: Institut za fiziku
978-953-7666-15-6
Podaci o skupu
Symposium in memory of Jovica Ivkov
predavanje
24.02.2017-24.02.2017
Zagreb, Hrvatska