On the Ferromagnetism in Manganese-Aluminium-Iron System

Investigation of ferromagnetism in Mn1−xAl1−yFex+y alloys

“…Traces of minority phases in very small proportion were also observed, identified as the ␤-Mn cubic structure (spacegroup P4 1 32) and an Al-rich (fct) phase. This corroborates the earlier study of Tsuboya et al [5], who also observed the same conjunction of crystallographic phases in these alloys. The ␤-Mn phase has two types of atomic sites per unit cell, which contains 20 atoms (at Wyckoff positions 8c and 12b).…”

“…No contribution from any paramagnetic or antiferromagnetic entity has been observed. In the earlier investigation on these alloys the secondary phases have been reported as nonmagnetic [5]. ␤-Mn is nonmagnetic.…”

“…As reported, the composition range of the ferromagnetic (FM) phase is as follows: 12.5-17.5 at.% Fe, 35-42.5 at.% Mn and 42. 5-47.5 at.% Al [5]. This phase is cubic with the CsCl (B2) structure and has a lattice param- * Corresponding author.…”

The origin of ferromagnetism and antiferromagnetism in alloys of transition metals. II. Alloys of transition metals with other transition metals and with polyvalent non-transition elements

“…Almost the same behaviour was found a t the ordered CuAu-type phase -Mn,Ga with T, N 700 K and H , values between 1.8 and 5.8 kOe for 34 and 31.5 atyo Ga, respectively (Tsuboya and Gugihara [201]). A moment of 0 .…”

Neutron diffraction, magnetic and superconducting measurements on vanadium–manganese–gallium alloys

“…This would take place by indirect exchange through localized p orbitals of adjoining gallium atoms similar to that occurring in MnO2 with p orbitals of the oxygen atoms. There are a number of linear chains of manganese atoms separated by gallium atoms in the Mn2Ga5 structure such as Mn(0.19, 0.32, 0.s)Ga(0, 0.s, 0)Mnt0.w, 0.6s, -0.s) • Similar ferromagnetism has been suggested to occur in the alloy d-MnGa by Tsuboya (1965).…”