Materials Data on Er2CuNi by Materials Project
Er2NiCu crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are two inequivalent Er sites. In the first Er site, Er is bonded in a 7-coordinate geometry to four equivalent Ni and three equivalent Cu atoms. All Er–Ni bond lengths are 2.93 Å. There are two shorter (2.81 Å) and one longer (2.92 Å) Er–Cu bond lengths. In the second Er site, Er is bonded in a 7-coordinate geometry to three equivalent Ni and four equivalent Cu atoms. There are two shorter (2.83 Å) and one longer (2.89 Å) Er–Ni bond lengths. All Er–Cu bond lengths are 2.93 Å. Ni is bonded in a 9-coordinate geometry to seven Er and two equivalent Cu atoms. Both Ni–Cu bond lengths are 2.61 Å. Cu is bonded in a 9-coordinate geometry to seven Er and two equivalent Ni atoms.