Structural, Magnetic and Mossbauer studies of Transition metal doped Gd2Fe16Ga0.5TM0.5 intermetallic compounds (TM=Cr, Mn, Co, Ni, Cu, and Zn)

• DOI: 10.20944/preprints201810.0075.v1
• Publication Date: 2018-10-09T04:39:22Z
• Authors: Jiba Nath Dahal; Syed Ali Sikkanther; Jahangir Alam; Sanjay Ram Mishra
• Keywords: Rietveld Refinement; Lattice constant; Ionic radius

The effect of transition metal substitution for Fe and the structural magnetic properties Gd2Fe16Ga0.5TM0.5 (TM=Cr, Mn, Co, Ni, Cu, Zn) compounds were investigated. Rietveld analysis X-ray diffraction indicates that all samples crystallize in hexagonal Th2Ni17 structure. lattice parameters: a, c unit cell volume show TM ionic radii dependence. Both Ga atoms preferred site occupancy 12j 12k sites. saturation magnetization at maximum room temperature was observed Cu 69, 73, 77 emu/g, respectively while minimum value Zn (62emu/g) doping Gd2Fe16Ga0.5TM0.5. Highest Curie 590 K which is 15% 5% thesehigher than Gd2Fe17 Gd2Fe16Ga compounds, respectively. hyperfine parameters viz. field isomer shift, systematic dependence on atomic number. behavior explained basis Fe(3d)-TM(3d) hybridization. superior doped as compared to pure or makes a potential candidate high-temperature industrial magnet applications.