Figure 1
From: The Magnetic and Crystal Structure of MnxGa (1.15 ≤ x ≤ 1.8) Alloys
The three tetragonal structures considered here for the MnxGa system and drawn for stoichiometric MnGa for simplicity. Anti-clockwise from top right: Large cell P4/mmm (#123, often denoted as L10) generally assumed for MnGa, has two Ga sites and one Mn site; I4/mmm (#139, or D022) generally assumed for Mn3Ga, constructed by stacking two P4/mmm cells along the c-axis; The simpler reduced-cell P4/mmm structure proposed here with one Ga and one Mn site. It is a simplified form of the larger L10–P4/mmm cell with c unchanged and a′ = \(\sqrt{2}\). In each case the atom sites are identified next to each cell.
