K. Tivakorn AsithornS. NilpairuchS. VatanayonI. M. TangMahidol UniversityChulalongkorn University2018-06-212018-06-212005-03-20Modern Physics Letters B. Vol.19, No.6 (2005), 295-302021798492-s2.0-20844447896https://repository.li.mahidol.ac.th/handle/20.500.14594/17186Cut Fe40Ni38B18Mo4ribbons were annealed for two hours at various temperatures Tabetween 400 and 540°C. All the ribbons were subjected to XRD, VSM (vibrating sample magnetometer) and ME (Mossbauer effect spectroscopy) investigations. A differential thermal analysis scan of an as-cast ribbon showed the presence of two exothermic peaks, the first beginning at 419.9°C and peaking at 429.7°C and the second beginning at 497.3°C and ending at 546.2°C. The XRD patterns of the ribbons showed the formation of FeNi3nanocrystallites in the lower T′aribbons and (Fe, Ni, Mo)23B6crystallites in the ribbons annealed above 470°C. Different behaviors of the saturation magnetization were seen in the ribbons annealed between 400 and 450°C, between 450 and 490°C, and between 490 and 540°C. The ME spectra of the ribbons annealed in the three different temperature ranges also pointed to the presence of three crystalline Fe-compounds in these ranges. The XRD patterns and the coercivities (Hc) of the lower Taribbons point to the formation of nanocrystallites in these ribbons. © World Scientific Publishing Company.Mahidol UniversityPhysics and AstronomyArticleSCOPUS10.1142/S0217984905008347