title: Modified spinel, Beta-manganous orthogermanate: stability and crystal structure.
abstract: A new high-pressure polymorph with a modified spinel structure, beta-Mn(2)GeO(4), is stable in a pressure range intermediate between the field of the polymorph with the olivine structure and that of another high-pressure polymorph. Oxygen atoms are located approximately in cubic close packing with manganese and germanium atoms in octahedral and tetrahedral interstices, respectively, as in the spinel structure; however, germanium atoms form Ge(2)O(7) groups instead of isolated GeO(4) groups.
authors.forename: N
authors.initials: N
authors.lastname: Morimoto
authors.forename: S I
authors.initials: SI
authors.lastname: Akimoto
authors.forename: K
authors.initials: K
authors.lastname: Koto
authors.forename: M
authors.initials: M
authors.lastname: Tokonami