Magnetic Behaviour of Amorphous Fe<SUB>40</SUB>Ni<SUB>40</SUB>B<SUB>20</SUB> Alloy Treated Isothermally below Crystallization Temperature

Crystallization Kinetics Study in Al87Ni10La3 Amorphous Alloy

In this study, the crystallization behavior of melt-spun Al87Ni10La3 amorphous phase was investigated by using X-ray diffraction and non-isothermal differential thermal analysis techniques. The results demonstrated that the amorphous phase exhibited two-stage crystallization on heating, i.e., at first step the amorphous phase transforms into α-Al phase and at second step Al11La3 and Al3Ni inter...

Non-isothermal Primary Crystallization Kinetics of the Amorphous Fe85.3B11P3Cu0.7 Alloy

In the present research, the primary crystallization kinetics of the amorphous Fe85.3B11P3Cu0.7 alloy was analyzed using non-isothermal DSC measurements. The average and local activation energies, Ea, were determined by different isokinetic and isoconversional methods. The results obtained for activation energy in this research, show that due to the complexity of the primary crystallization pro...

Pressure effects on Al89La6Ni5 amorphous alloy crystallization

Superparamagnetic behaviour of amorphous Hf57Fe43 alloy

The magnetization processes in binary magnetic/nonmagnetic amorphous alloy Hf57Fe43 are investigated by the detailed measurements including magnetic hysteresis loops, dependence of magnetic moment on temperature and relaxation of magnetic moment. The blocking of magnetization at lower temperatures is accompanied by the slow relaxation of magnetic moment and magnetic hysteresis loops. All of obs...

Magnetic Properties and Crystallization Kinetics of a Mn-Doped FINEMET Precursor Amorphous Alloy

The kinetics of nanocrystallization of a Mn-doped FINEMET alloy from its amorphous precursor is reported. The alloy studied was of a composition (Fe1 Mn )73 5Nb3CuSi13 5B9 where = 0 05. X-ray diffraction (XRD) confirmed that -FeSi is the product of primary nanocrystallization. Crystallization kinetics were studied using time-dependent magnetization, ( ), as a measure of the volume fraction crys...