Publications since 1992

A hot-pressed germanium (311) monochromator for powder diffraction at the NIST Center for Neutron Research - K.T. Forstner, S.F. Trevino, D.A. Neumann, and J. Blendell, Rev. Sci. Instr. (in preparation).

The state of water in hydrating tricalcium silicate and portland cement pastes using quasielastic neutron scattering - J.J. Thomas, D.A. Neumann, S.A. FitzGerald, and R.A. Livingston, Cement Concrete Res. (submitted).

Structure of the n=2 and n=infinity member of the Ruddlesden-Popper series, Sr_n+1Sn_nO_3n+1 - M.A. Green, P. Day, D.A. Neumann, and K. Prassides, J. Inorg. Mater. (in press).

Probing the dynamics of confined systems with the NIST backscattering spectrometer - R.M. Dimeo and D.A. Neumann, J. Physique IV (in press).

Application of neutron scattering to portland cement - R.A. Livingston, D.A. Neumann, A. Allen, S.A. FitzGerald, and R. Berliner, Neutron News (in press).

Synthesis, structure and electronic properties of LaCa₂Mn₂O₇ - M.A. Green and D.A. Neumann, Chem. Mater. 12, 90 (2000).

Polarization and structural transitions of irradiated vinylidene fluoride-trifluoroethylene copolymer - E. Balizer, A. S. DeReggi, D. A. Neumann, and F. Bateman, in 1999 Conference on Electrical Insulation and Dielectric Phenomena, Vol. 1, (IEEE Publ. No. 99CH36319, 1999) p. 104.

Neutron scattering study of Na₂C₆₀ in the pressure-temperature plane - T. Yildirim, D.A. Neumann, S.F. Trevino, and J.E. Fischer, Phys. Rev. B 60, 10707 (1999).

Vibrations of the cubane molecule: Inelastic neutron scattering study and theory - T. Yildirim, C. Kilic, S. Ciraci, P.M. Gehring, D.A. Neumann, P.E. Eaton, and T. Emrick, Chem. Phys. Lett. 309, 234 (1999).

Quantum dynamics of interstitial H₂ in solid C₆₀ - S.A. FitzGerald, T. Yildirim, L.J. Santodonato, D.A. Neumann, J.R.D. Copley, J.J. Rush, and F. Trouw, Phys. Rev. B 60, 6439 (1999).

Evolution of the structure of K₂NiF₄ phases La_2-xSr_xNiO_4+delta with oxidation state: Octahedral distortion and phase separation (0.2 < x < 1.0) - J.E. Millburn, M.A. Green, D.A. Neumann, and M.J. Rosseinsky, J. Solid State Chem. 145, 401 (1999).

Neutron scattering investigation of molecular reorientations in solid cubane - T. Yildirim, P.M. Gehring, D.A. Neumann, P.E. Eaton, and T. Emrick, Phys. Rev. B 60, 314 (1999).

Chemical ordering in Ni-Mn-Ga Heusler alloys - R. Overholser, M. Wuttig, and D.A. Neumann, Scripta Mater. 40, 1095 (1999).

An inelastic neutron scattering study of the hydration of tricalcium silicate - S.A. FitzGerald, D.A. Neumann, J.J. Rush, R.J. Kirkpatrick, X. Cong, and R.A. Livingston, J. Mater. Res. 14, 1160 (1999).

Rotational dynamics of C₆₀ in K₃C₆₀ - S. Margadonna, K.Prassides, D.A. Neumann, H. Shimoda, and Y. Iwasa, Phys. Rev. B 59, 943 (1999).

Structure and dynamics of K₁C₆₀ in the orthorhombic phase: A neutron scattering study - H.M. Guerrero, R.L. Cappelletti, D.A. Neumann, and T. Yildirim, Chem. Phys. Lett. 297, 265 (1998).

Solid cubane - A brief review - T. Yildirim, P.M. Gehring, D.A. Neumann, P.E. Eaton, and T. Emrick, Carbon 36, 809 (1998).

An in-situ quasielastic neutron scattering study of the hydration reaction in tricalcium silicate - S.A. FitzGerald, D.A. Neumann, J.J. Rush, D.P. Bentz, and R.A. Livingston, Chem. Mater. 10, 397 (1998).

Backscattering spectroscopy at the NIST Center for Neutron Research - P.M. Gehring and D.A. Neumann, Physica B 241, 64 (1997).

Lattice Vibrations of the Superconducting Oxide Spinels (Li,Mg)_1+xTi_2-xO₄ - M.A. Green, M. Dalton, K. Prassides, P. Day, and D.A. Neumann, J. Phys. Cond. Matter 9, 10855 (1997).

Unusual structure, phase transition, and dynamics of solid cubane - T. Yildirim, P.M. Gehring, D.A. Neumann, P.E. Eaton, and T. Emrick, Phys. Rev. Lett. 78, 4938 (1997).

Anomalous static displacements and their relation to lattice dynamics in Fe_0.53Cr_0.47 - S.C. Moss, J.L. Robertson, D.A. Neumann, and L. Reinhard, Comp. Mater. Sci. 8, 33 (1997).

Quasielastic neutron scattering study of the hydration of tricalcium silicate - R.A. Livingston, D.A. Neumann, S.A. FitzGerald, and J.J. Rush, in Neutrons in Research and Industry edited by G. Vourvopoulos (SPIE Proceedings, Vol. 2867, 1997) p. 148.

Orientational transcription in the solid state synthesis of rare earth carbides - L.J. Santodonato, D.A. Neumann, and R.W. Erwin, J. Am. Chem. Soc. 118, 12860 (1996).

Neutron scattering study of the lattice modes of solid cubane - P.M. Gehring, D.A. Neumann, W.A. Kamitakahara, J.J. Rush, P.E. Eaton, and D.P. VanMeurs, J. Phys. Chem. 99, 4429 (1995).

X-ray powder diffraction from carbon nanotubes and nanoparticles - D. Reznik, C.H. Olk, D.A. Neumann, and J.R.D. Copley, Phys. Rev. B52, 116 (1995).

Lattice dynamics of Ba_{1- x}K_xBiO₃ studied by inelastic neutron scattering - M.A. Green, K. Prassides, D.A. Neumann, and P. Day, Chem. Mater. 7, 888 (1995).

Lattice dynamics of Ba_{1- x}K_xBiO₃ - M.A. Green, K. Prassides, P. Day, and D.A. Neumann, Synthetic Metals 71, 1619 (1995).

Energy distributions of neutrons scattered from solid C₆₀ by the beryllium detector method - J.R.D. Copley, D.A. Neumann, and W.A. Kamitakahara, Can. J. Phys. 73, 763 (1995).

Design of a high-flux backscattering spectrometer for ultra-high resolution inelastic neutron scattering - P.M. Gehring, C.W. Brocker, and D.A. Neumann, in Neutron Scattering in Materials Science edited by B. Wuensch, D.A. Neumann, and T.P. Russell, MRS Symp. Proc. 376 (MRS, Pittsburgh, 1995) p. 113.

Static and dynamic displacements in alpha-phase FeCr - J.L. Robertson, L. Reinhard, D.A. Neumann and S.C. Moss, in Neutron Scattering in Materials Science edited by B. Wuensch, D.A. Neumann, and T.P. Russell, MRS Symp. Proc. 376 (MRS, Pittsburgh, 1995) p. 689.

Quantifying freezable water in Portland cement paste using quasielastic neutron scattering - D.L. Gress, T. El-Korchi, R.A. Livingston, D.A. Neumann, and J.J. Rush, in Neutron Scattering in Materials Science edited by B. Wuensch, D.A. Neumann, and T.P. Russell, MRS Symp. Proc. 376 (MRS, Pittsburgh, 1995) p. 493.

Application of neutron scattering methods to cementitious materials - R.A. Livingston, D.A. Neumann, A. Allen, and J.J. Rush, in Neutron Scattering in Materials Science edited by B. Wuensch, D.A. Neumann, and T.P. Russell, MRS Symp. Proc. 376 (MRS, Pittsburgh, 1995) p. 459.

Quantifying freezable water in Portland cement paste using quasielastic neutron scattering - D.L. Gress, T. El-Korchi, R.A. Livingston, D.A. Neumann, and J.J. Rush, in Concrete under Severe Conditions: Environment and Loading edited by K. Sahai, N. Banthia, and O.E. Giørv (E&FN, 1995) p. 187.

Neutron scattering studies of C₆₁H₂ - D.A. Neumann, J.E. Fischer, J.R.D. Copley, P.A. Heiney, J.J. Rush R.M. Strongin, L. Brard, and A.B. Smith III, in Science and Technology of Fullerenes edited by P. Bernier, T.W. Ebbesen, D.S. Bethune, R.M. Metzger, L.Y. Chiang, and J.W. Mintmire, MRS Symp. Proc. 359 (MRS, Pittsburgh, 1995) p. 537.

Neutron diffraction study of the 6,5 annulene isomer of C₆₁D₂ - D.A. Neumann, Q. Huang, J.R.D. Copley, J.E. Fischer, P.A. Heiney, R.M. Strongin, L. Brard, and A.B. Smith III, in Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials edited by K. Kadish and R.S. Ruoff, (ECS, Princeton, NJ, 1995) p. 791.

Quasielastic and inelastic neutron scattering studies of layered silicates - D.A. Neumann, in Access in Nanoporpous Materials edited by T.J. Pinnavaia and M.F. Thorpe, (Plenum, New York, 1995) p. 381.

Structure and dynamics of crystalline C₆₀ - J.D. Axe, S.C. Moss, and D.A. Neumann, in Solid State Physics Vol. 48, (Academic Press, Boston, 1994) p. 149.

Neutron scattering study of librations and intramolecular phonons in Rb_2.6K_0.4C₆₀ - D. Reznik, W.A. Kamitakahara, D.A. Neumann, J.R.D. Copley, J.E. Fischer, R. Strongin, M. Cichy, and A.B. Smith, Phys. Rev. B. 49, 1005 (1994).

Rotational dynamics of solid C₇₀: A neutron scattering study - C. Christides, T.J.S. Dennis, K. Prassides, R.L. Cappelletti, D.A. Neumann, and J.R.D. Copley, Phys. Rev. B 49 2897 (1994).

X-ray scattering studies of surface roughness of GaAs/AlAs multilayers - S.K. Sinha, M.K. Sanyal, S.K. Satija, C.F. Majkrzak, D.A. Neumann, H. Homma, S. Szpala, A. Gibaud, and H. Morkoç, Physica B 198, 72 (1994).

Phase transitions in solid C₇₀: supercooling, metastable phases and impurity effects - A.R. McGhie, J.E. Fischer, P.W. Stephens, R.L. Cappelletti, D.A. Neumann, W.H. Mueller, H. Mohn, and H.-U. ter Meer, Phys. Rev. B 49, 12614 (1994).

The methyl torsional levels of solid acetonitrile(CH₃-CN) - A neutron scattering study - S.F. Trevino, C.S. Choi, and D.A. Neumann, J. Chem. Phys. 98, 78 (1993).

Phonon density of states in RCuO₄ and superconducting R_1.85Ce_0.15CuO₄ (R=Nd,Pr) - I.W. Sumarlin, J.W. Lynn, D.A. Neumann, J.J. Rush, C.K. Loong, J.L. Peng, and Z.Y. Li, Phys. Rev. B 48, 473 (1993).

Maximum entropy as a tool for the determination of the c-axis profile of layered compounds - Ph. Depondt, D.A. Neumann, and S.F. Trevino, Acta Cryst. B 49, 153 (1993).

Ultra-high resolution neutron scattering - D.A. Neumann and B. Hammouda, J. Res. NIST 98 , 89 (1993).

Michel, Copley, and Neumann reply - K.H. Michel, J.R.D. Copley, and D.A. Neumann, Phys. Rev. Lett. 69, 3590 (1993).

Structure and dynamics of buckyballs - J.R.D. Copley, W.I.F. David, and D.A. Neumann, Neutron News 4(4), 20 (1993).

Inelastic neutron scattering studies of rotational excitations and the orientational potential in C₆₀ and A₃C₆₀ compounds - D.A. Neumann, J.R.D. Copley, D. Reznik, W.A. Kamitakahara, J.J. Rush, R.L. Paul, and R.M. Lindstrom, J. Phys. Chem. Sol. 54, 1699 (1993).

Rotational dynamics of C₆₀ in Na₂RbC₆₀ - C. Christides, K. Prassides, D.A. Neumann, J.R.D. Copley, J. Mizuki, K. Tanigaki, I. Hirosawa, and T.W. Ebbesen, Europhys. Lett. 24, 755 (1993).

Rotational dynamics and orientational melting of C₆₀: A neutron scattering study - D.A. Neumann, J.R.D. Copley, W.A. Kamitakahara, J.J. Rush, R.L. Cappelletti, N. Coustel, J.E. Fischer, J.P. McCauley, A.B. Smith, K.M. Creegan, and D.M. Cox, J. Chem. Phys. 96, 8631 (1992).

Reflectivity and grazing angle diffraction of polarized neutrons - J.F. Ankner, C.F. Majkrzak, D.A.Neumann, A. Matheny, and C.P. Flynn, Mat. Res. Soc. Symp. Proc. 231, 113 (1992).

Elastic and inelastic neutron scattering study of hydrogenated and deuterated trimethylammonium pillared vermiculite clays - Y. Fan, S.A. Solin, H. Kim, T.J. Pinnavaia, and D.A. Neumann, J. Chem. Phys. 96, 7064 (1992).

Discontinuous volumn change at the orientational-ordering transition in solid C₆₀ - P.A. Heiney, G.B.M. Vaughan, J.E. Fischer, N. Coustel, D.E. Cox, J.R.D. Copley, D.A. Neumann, W.A. Kamitakahara, K.M. Creegan, D.M. Cox, J.P. McCauley, and A.B. Smith, Phys. Rev. B 45, 4544 (1992).

Microscopic Theory of orientational disorder and the orientational phase transition in solid C₆₀ - K.H. Michel, J.R.D. Copley, and D.A. Neumann, Phys. Rev. Lett. 68, 2929 (1992).

Structure and low energy dynamics of solid C₆₀ - J.R.D. Copley, D.A. Neumann, R.L. Cappelletti, W.A. Kamitakahara, E. Prince, N. Coustel, J.P. McCauley, N.C. Maliszewskyj, J.E. Fischer, A.B. Smith, K.M. Creegan, and D.M. Cox, Physica B 180 & 181, 706 (1992).

Neutron scattering studies of C₆₀ and its compounds - J.R.D. Copley, D.A. Neumann, R.L. Cappelletti, and W.A. Kamitakahara, J. Phys. Chem. Solids 53, 1353 (1992).

Neutron scattering study of C^n-₆₀ (n=3,6) librations in alkali-metal fullerides - C. Christides, D.A. Neumann, K. Prassides, J.R.D. Copley, J.J. Rush, M.J. Rosseinsky, D.W. Murphy, and R.C. Haddon, Phys. Rev. B 46 12088 (1992).

Rotations, vibrations, and structure in solid C₆₀: Investigations by neutron scattering - W.A. Kamitakahara, J.R.D. Copley, R.L. Cappelletti, J.J. Rush, D.A. Neumann, J.E. Fischer, J.P. McCauley, and A.B. Smith, Mat. Res. Soc. Symp. Proc. 270, 167 (1992).

Coherent quasielastic neutron scattering study of the rotational dynamics of C₆₀ in the orientationally disordered phase - D.A. Neumann, J.R.D. Copley, R.L. Cappelletti, W.A. Kamitakahara, R.M. Lindstrom, K.M. Creegan, D.M. Cox, W.J. Romanow, N. Coustel, J.P. McCauley, N.C. Maliszewskyj, J.E. Fischer, and A.B. Smith, Phys. Rev. Lett. 67, 3808 (1991).