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Isothermal Section of the Y-Fe-Sb Terary System at 773K and Electrical and Magnetic Properties of the Compound FeSb2Y6

Author: LuMeiWen
Tutor: ZengLingMin
School: Guangxi University
Course: Materials Physics and Chemistry
Keywords: phase diagram X-ray techniques Y-Fe-Sb Rietveld method electrical properties magnetic properties
CLC: TG113.14
Type: Master's thesis
Year: 2011
Downloads: 9
Quote: 0
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Abstract


It is well known that rare earth (RE) alloys have a lot of promising (magnetic, electric, etc.) properties and attract more and more attentions. The interaction between the components in RE-Fe-Sb systems has not been studied systematically until now.The isothermal sections of the Y-Fe-Sb ternary systems have been determined by means of X-ray diffration, optical microscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and Rietveld method. The phase relationship of Y-Fe-Sb at 773K was determined. The results that be determined by all the methods in good agreement with each other. The existence of nine binary compounds Y3Sb、Y5Sb3、YSb、Fe17Y2, Fe23Y6, Fe3Y、Fe2Y、FeSb、FeSb2 and one ternary compound FeSb2Y6 have been confirmed in this system. The section consists of thirteen single-phase regions, twenty-four two-phase regions and twelve three-phase regions.Magnetic measurements were performed in a vibrating sample magnetometer (VSM, Lake Shore 7410) at home temperatures in magnetic fields 0-1.92T. The maximum magnetic moment of the FeSb2Y6 compound is about 0.74emu/g when the magnetic fields is 1.92T.The temperature dependence of resistance was measured by a standard four-probe method.The resistivity of the FeSb2Y6 compound is observed to fall from 261 to 40μΩcm between 288K and 5 K.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > Metallurgy ( Physical Metallurgy ) > Metallographic microstructure and properties of the (metal ) > Organization of the metal > State diagram ( phase diagram )
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