Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

The effect of thermal-relaxation on the short-range order in Zr80Co20 metallic glass (CROSBI ID 94412)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Kokanović, Ivan ; Leontić, Boran ; Lukatela, Jagoda ; Tonejc, Antun The effect of thermal-relaxation on the short-range order in Zr80Co20 metallic glass // Materials science & engineering. A., 375-377 (2004), 688-692-x

Podaci o odgovornosti

Kokanović, Ivan ; Leontić, Boran ; Lukatela, Jagoda ; Tonejc, Antun

engleski

The effect of thermal-relaxation on the short-range order in Zr80Co20 metallic glass

We have studied the effect of thermal-relaxation on the short-range order in Zr80Co20 metallic glass by means of differential scanning calorimetry, X-ray diffraction, electrical resistivity and the superconducting transition temperature, Tc. Experimental values for the crystallisation temperature and activation energy of the crystallisation processes were derived by studying these processes at different heating rates. The Tc of the Zr80Co20 metallic glass thermally relaxed with a heating rate of 60 K/min to slightly below its first crystallisation exothermal peak is higher than in unrelaxed Zr80Co20 metallic glass, whereas in all the other thermally relaxed samples Tc decreases with decreasing heating rates and increasing temperature relaxation. The homogeneity of the thermally relaxed Zr80Co20 metallic glass is discussed by using the superconducting transition width as a criterion. The superconducting transitions of thermally relaxed Zr80Co20 metallic glass samples are characterised by a sharp fall in electrical resistance. This suggests that the samples are homogenous on a spatial scale of less than the zero-temperature coherence length  0. The position of the first maximum broad diffraction halo in XRD spectra of the thermally relaxed Zr80Co20 metallic glass is shifted to smaller values of 2 with increasing temperature of relaxation and decreasing heating rates indicating an increase in the nearest-neighbour distance. The decrease of the room-temperature electrical resistivity is explained as a consequence of decreased disorder due to thermal relaxation.

Metallic Glass; Thermal Stability; Crystallisation; Superconductivity

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

375-377

2004.

688-692-x

objavljeno

0921-5093

Povezanost rada

Fizika

Indeksiranost