Title :
Structural and magnetic properties of Tb0.27Dy0.73Fe2-xNbx (x = 0, 0.05, 0.1 and 0.2)
Author :
Babu, Hari V. ; Markandeyulu, G. ; Subrahmanyam, A. ; Palit, M. ; Pandian, S.
Author_Institution :
Indian Inst. of Technol., Chennai
Abstract :
In this paper, the effect of substituting Fe partially by the 4d element Nb on the structural and magnetic properties of Tb0.27Dy0.73Fe2 is reported. Polycrystalline compounds of Tb0.27Dy0.73Fe2-xNbx (x = 0, 0.05, 0.1 and 0.2) were prepared by arc melting the constituent elements (rare earths-99.9 % pure, Fe and Nb -99.95 % pure) in an arc furnace under argon atmosphere. The ingots were annealed in vacuum at 950degC for a week. X-ray diffraction patterns of these compounds were taken using a PANalytical X-ray diffractrometer. Magnetization up to 12 kOe and Curie temperature (Tc) measurements were carried out using a PAR-155 vibrating sample magnetometer (VSM). Magnetostriction measurements at room temperature were carried out employing strain gauge method.
Keywords :
Curie temperature; X-ray diffraction; annealing; crystal structure; dysprosium alloys; giant magnetoresistance; ingots; iron alloys; magnetisation; magnetostriction; materials preparation; niobium alloys; terbium alloys; Curie temperature; Tb0.27Dy0.73Fe2Nb; X-ray diffraction; annealing; arc melting; giant magnetostriction; ingots; magnetic properties; magnetization; magnetotriction measurements; polycrystalline compounds; strain gauge method; temperature 950 C; Annealing; Argon; Atmosphere; Furnaces; Iron; Magnetic properties; Niobium; Strain measurement; Temperature measurement; X-ray diffraction;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376175
