Publication: Magnetic properties of amorphous Fe<inf>40</inf>Ni<inf>38</inf>B<inf>18</inf>Mo<inf>4</inf>ribbons containing nanocrystallites
Issued Date
2005-03-20
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ISSN
02179849
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2-s2.0-20844447896
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Mahidol University
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SCOPUS
Bibliographic Citation
Modern Physics Letters B. Vol.19, No.6 (2005), 295-302
Suggested Citation
K. Tivakorn Asithorn, S. Nilpairuch, S. Vatanayon, I. M. Tang Magnetic properties of amorphous Fe<inf>40</inf>Ni<inf>38</inf>B<inf>18</inf>Mo<inf>4</inf>ribbons containing nanocrystallites. Modern Physics Letters B. Vol.19, No.6 (2005), 295-302. doi:10.1142/S0217984905008347 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/17186
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Title
Magnetic properties of amorphous Fe<inf>40</inf>Ni<inf>38</inf>B<inf>18</inf>Mo<inf>4</inf>ribbons containing nanocrystallites
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Abstract
Cut 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.