DOE OSTI2020
Ni2MnGa is alpha iridium vanadium-derived structured and crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are seven inequivalent Mn sites. In the first Mn site, Mn is bonded in a 8-coordinate geometry to eight Ni and one Ga atom. There are a spread of Mn–Ni bond distances ranging from 2.49–2.53 Å. The Mn–Ga bond length is 2.82 Å. In the second Mn site, Mn is bonded in a 8-coordinate geometry to eight Ni and three Ga atoms. There are a spread of Mn–Ni bond distances ranging from 2.49–2.54 Å. There are one shorter (2.73 Å) and two longer (2.74 Å) Mn–Ga bond lengths. In the third Mn site, Mn is bonded in a 8-coordinate geometry to eight Ni and three Ga atoms. There are a spread of Mn–Ni bond distances ranging from 2.49–2.54 Å. There are one shorter (2.72 Å) and two longer (2.74 Å) Mn–Ga bond lengths. In the fourth Mn site, Mn is bonded in a 8-coordinate geometry to eight Ni and two equivalent Ga atoms. There are a spread of Mn–Ni bond distances ranging from 2.50–2.52 Å. Both Mn–Ga bond lengths are 2.74 Å. In the fifth Mn site, Mn is bonded in a 8-coordinate geometry to eight Ni and three Ga atoms. There are a spread of Mn–Ni bond distances ranging from 2.48–2.53 Å. There are a spread of Mn–Ga bond distances ranging from 2.71–2.75 Å. In the sixth Mn site, Mn is bonded in a 8-coordinate geometry to eight Ni and three Ga atoms. There are a spread of Mn–Ni bond distances ranging from 2.49–2.54 Å. There are a spread of Mn–Ga bond distances ranging from 2.71–2.74 Å. In the seventh Mn site, Mn is bonded in a 8-coordinate geometry to eight Ni and one Ga atom. There are a spread of Mn–Ni bond distances ranging from 2.49–2.53 Å. The Mn–Ga bond length is 2.82 Å. There are fourteen inequivalent Ni sites. In the first Ni site, Ni is bonded in a distorted body-centered cubic geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.49–2.53 Å. In the second Ni site, Ni is bonded in a distorted body-centered cubic geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.49–2.53 Å. In the third Ni site, Ni is bonded in a 8-coordinate geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.49–2.55 Å. In the fourth Ni site, Ni is bonded in a distorted body-centered cubic geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.49–2.53 Å. In the fifth Ni site, Ni is bonded in a 8-coordinate geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.49–2.55 Å. In the sixth Ni site, Ni is bonded in a distorted body-centered cubic geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.49–2.54 Å. In the seventh Ni site, Ni is bonded in a 8-coordinate geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.50–2.55 Å. In the eighth Ni site, Ni is bonded in a 8-coordinate geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.49–2.53 Å. In the ninth Ni site, Ni is bonded in a distorted body-centered cubic geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.50–2.53 Å. In the tenth Ni site, Ni is bonded in a distorted body-centered cubic geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.50–2.53 Å. In the eleventh Ni site, Ni is bonded in a distorted body-centered cubic geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.49–2.54 Å. In the twelfth Ni site, Ni is bonded in a distorted body-centered cubic geometry to four Mn and four Ga atoms. There are one shorter (2.51 Å) and three longer (2.52 Å) Ni–Ga bond lengths. In the thirteenth Ni site, Ni is bonded in a 8-coordinate geometry to four Mn and four Ga atoms. There are a spread of Ni–Ga bond distances ranging from 2.50–2.55 Å. In the fourteenth Ni site, Ni is bonded in a distorted body-centered cubic geometry to four Mn and four Ga atoms. There are two shorter (2.51 Å) and two longer (2.52 Å) Ni–Ga bond lengths. There are seven inequivalent Ga sites. In the first Ga site, Ga is bonded in a 8-coordinate geometry to eight Ni atoms. In the second Ga site, Ga is bonded in a 11-coordinate geometry to three Mn and eight Ni atoms. In the third Ga site, Ga is bonded to four Mn and eight Ni atoms to form a mixture of distorted edge and corner-sharing GaMn4Ni8 cuboctahedra. In the fourth Ga site, Ga is bonded in a 11-coordinate geometry to three Mn and eight Ni atoms. In the fifth Ga site, Ga is bonded in a 11-coordinate geometry to three Mn and eight Ni atoms. In the sixth Ga site, Ga is bonded in a 8-coordinate geometry to eight Ni atoms. In the seventh Ga site, Ga is bonded in a 11-coordinate geometry to three Mn and eight Ni atoms.