en گروه سرامیک Ceramic Materials and Engineering Research Paper Research Paper In the present research, rapidly solidified Fe_85.3B₁₁P₃Cu_0.7 ribbons were prepared by melt spinning process. The microstructural variation as well as magnetic properties of the as-spun and annealed ribbons were characterized by X-ray diffraction (XRD), transmission Mossbauer spectroscopy and alternating gradient field magnetometer (AGFM). The results show two separated distinct exothermic peaks during heating resulting from the phase transition from amorphous to α-Fe and then to Fe₃B, respectively. The study of magnetic properties in the amorphous and nanocrystalline states revealed that annealing the amorphous ribbons at 440˚C for 10 minutes gives rise to a significant increase in saturation magnetization (220 emu/g) which makes this alloy a good candidate for power applications. Melt spinning, Mossbauer spectroscopy, Crystallization, Soft magnetic properties 1 11 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-43-2&slc_lang=en&sid=1 S. Mirzaei smirzaei@iust.ac.ir 1800319475328460010437 1800319475328460010437 No School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST) H. Saghafian saghafian@iust.ac.ir 1800319475328460010438 1800319475328460010438 Yes School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST) A. Beitollahi beitolla@iust.ac.ir 1800319475328460010439 1800319475328460010439 No School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST) J. Świerczek swiercz@wip.pcz.pl 1800319475328460010440 1800319475328460010440 No Institute of Physics, Częstochowa University of Technology P. Tiberto p.tiberto@inrim.it 1800319475328460010441 1800319475328460010441 No INRIM, Electromagnetism Division