Papers by Keyword: Spin-Reorientation

Abstract: The Tm₂Fe_19-xMn_x (x = 0 - 1.5) and Tm₂Fe₁₆, Tm₂Fe₁₇, Tm₂Fe₁₈, Tm₂Fe₁₉ intermetallic compounds were synthesized and their magnetic and structural properties were studied. Magnetic measurements, X-ray and neutron diffraction investigations were used. The compounds crystallize in a disordered variant of the hexagonal Th₂Ni₁₇-type structure. The lattice parameters a, c increases in the Tm₂Fe_19-xMn_x system, whereas c decreases and a increases in the Tm₂Fe₁₉ - Tm₂Fe₁₆ system as Fe content decreases. The temperatures of ferromagnetic ordering and spin-reorientation increase as Fe content decreases in these systems. Apparently, the decrease of occupation of defected dumbbell Fe (4e) site causes these regularities.