Orientation dynamics in white phosphorus (P{sub 4})

Book · Sat Dec 30 23:00:00 EST 1995

OSTI ID:225324

Kamitakahara, W A; Neumann, D A ^[1]; Gompf, F ^[2]

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1. National Inst. of Standards and Technology, Gaithersburg, MD (United States). Reactor Radiation Div.
2. Kernforschungszentrum Karlsruhe (Germany). Inst. fuer Nukleare Festkoerperphysik

Above T{sub 0} = 196 K, white phosphorus, a solid composed of P{sub 4} molecules, exhibits a plastic crystal phase. Below this temperature, the structure is triclinic and orientationally ordered, with six molecules in a unit cell. Using inelastic neutron scattering on a polycrystalline sample, observations were made of the rapid reorientational motions above T{sub 0}, and the librational modes below T{sub 0}. In addition, neutron powder diffraction was used to investigate the crystal structures above and below T{sub 0}.

• OSTI ID: 225324
• Report Number(s): CONF-941144--; ISBN 1-55899-278-2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL STRUCTURE
DIAGNOSTIC TECHNIQUES
EXPERIMENTAL DATA
NEUTRON DIFFRACTION
PHOSPHORUS