title: Synthesis of an orthorhombic high pressure boron phase.
abstract: The densest boron phase (2.52 g cm-3) was produced as a result of the synthesis under pressures above 9 GPa and temperatures up to ∼1800 °C. The x-ray powder diffraction pattern and the Raman spectra of the new material do not correspond to those of any known boron phases. A new high-pressure high-temperature boron phase was defined to have an orthorhombic symmetry (Pnnm(No. 58)) and 28 atoms per unit cell.
authors.affiliation: Bayerisches Geoinstitut, Universität Bayreuth, 95440 Bayreuth, Germany.
authors.forename: Evgeniya
authors.initials: E
authors.lastname: Yu Zarechnaya
authors.affiliation: Bayerisches Geoinstitut, Universität Bayreuth, 95440 Bayreuth, Germany.
authors.forename: Leonid
authors.initials: L
authors.lastname: Dubrovinsky
authors.affiliation: Institute of Earth Sciences, Universität Heidelberg, Im Neuenheimer Feld 236, 69120 Heidelberg, Germany.
authors.forename: Natalia
authors.initials: N
authors.lastname: Dubrovinskaia
authors.affiliation: Bayerisches Geoinstitut, Universität Bayreuth, 95440 Bayreuth, Germany.
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Miyajima
authors.affiliation: Swiss Norwegian Beam lines at ESRF, 38043 Gernoble, France.
authors.forename: Yaroslav
authors.initials: Y
authors.lastname: Filinchuk
authors.affiliation: Swiss Norwegian Beam lines at ESRF, 38043 Gernoble, France.
authors.forename: Dmitry
authors.initials: D
authors.lastname: Chernyshov
authors.affiliation: Swiss Norwegian Beam lines at ESRF, 38043 Gernoble, France.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Dmitriev
keywords: boron; crystal structure; high-pressure high-temperature