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20 results on '"Sutter, J-P"'

1. Effect of isotopic composition on the lattice parameter of germanium measured by x-ray backscattering

Author

Hu, M. Y., Sinn, H., Alatas, A., Sturhahn, W., Alp, E. E., Wille, H. C., Shvyd'ko, Y. V., Sutter, J. P., Bandaru, J., Haller, E. E., Ozhogin, V. I., Rodriguez, S., Colella, R., Kartheuser, E., Villeret, M. A., Hu, M. Y., Sinn, H., Alatas, A., Sturhahn, W., Alp, E. E., Wille, H. C., Shvyd'ko, Y. V., Sutter, J. P., Bandaru, J., Haller, E. E., Ozhogin, V. I., Rodriguez, S., Colella, R., Kartheuser, E., and Villeret, M. A.

Abstract

We have measured, by x-ray backscattering, the lattice constant of four highly enriched Ge isotopes: A=70, 73, 74, and 76 at temperatures ranging from 8 to 300 K. Comparing with Ge-70, values of Deltaa/a ranged from -10 to -46 p.p.m. A good quantitative agreement over the whole temperature range (8-300 K) was found with values calculated from a theory that takes into account the zero point motion and the anharmonicity of the lattice.

Published
2003

2. Effect of isotopic composition on the lattice parameter of germanium measured by x-ray backscattering

Author

Hu, M. Y., Sinn, H., Alatas, A., Sturhahn, W., Alp, E. E., Wille, H. C., Shvyd'ko, Y. V., Sutter, J. P., Bandaru, J., Haller, E. E., Ozhogin, V. I., Rodriguez, S., Colella, R., Kartheuser, E., Villeret, M. A., Hu, M. Y., Sinn, H., Alatas, A., Sturhahn, W., Alp, E. E., Wille, H. C., Shvyd'ko, Y. V., Sutter, J. P., Bandaru, J., Haller, E. E., Ozhogin, V. I., Rodriguez, S., Colella, R., Kartheuser, E., and Villeret, M. A.

Abstract

We have measured, by x-ray backscattering, the lattice constant of four highly enriched Ge isotopes: A=70, 73, 74, and 76 at temperatures ranging from 8 to 300 K. Comparing with Ge-70, values of Deltaa/a ranged from -10 to -46 p.p.m. A good quantitative agreement over the whole temperature range (8-300 K) was found with values calculated from a theory that takes into account the zero point motion and the anharmonicity of the lattice.

Published
2003

3. Atom clusters and vibrational excitations in chemically-disordered Pt357Fe

Author

Fultz, B., Stephens, T. A., Alp, E. E., Hu, M. Y., Sutter, J. P., Toellner, T. S., Sturhahn, W., Fultz, B., Stephens, T. A., Alp, E. E., Hu, M. Y., Sutter, J. P., Toellner, T. S., and Sturhahn, W.

Abstract

Inelastic nuclear resonant scattering spectra of Fe-57 atoms were measured on crystalline alloys of Pt3Fe-57 that were chemically disordered, partially ordered, and L1(2) ordered. Phonon partial density of states curves for Fe-57 were obtained from these spectra. Upon disordering, about 10% of the spectral intensity underwent a distinct shift from 25 to 19 meV. This change in optical modes accounted for most of the change of the vibrational entropy of disordering contributed by Fe atoms, which was (+0.10 +/- 0.03) k(B) (Fe atom)(-1). Prospects for parametrizing the vibrational entropy with low-order cluster variables were assessed. To calculate the difference in vibrational entropy of the disordered and ordered alloys, the clusters must be large enough to account for the abundances of several of the atom configurations of the first-nearest-neighbor shell about the Fe-57 atoms.

Published
2000

4. Atom clusters and vibrational excitations in chemically-disordered Pt357Fe

Author

Fultz, B., Stephens, T. A., Alp, E. E., Hu, M. Y., Sutter, J. P., Toellner, T. S., Sturhahn, W., Fultz, B., Stephens, T. A., Alp, E. E., Hu, M. Y., Sutter, J. P., Toellner, T. S., and Sturhahn, W.

Abstract

Inelastic nuclear resonant scattering spectra of Fe-57 atoms were measured on crystalline alloys of Pt3Fe-57 that were chemically disordered, partially ordered, and L1(2) ordered. Phonon partial density of states curves for Fe-57 were obtained from these spectra. Upon disordering, about 10% of the spectral intensity underwent a distinct shift from 25 to 19 meV. This change in optical modes accounted for most of the change of the vibrational entropy of disordering contributed by Fe atoms, which was (+0.10 +/- 0.03) k(B) (Fe atom)(-1). Prospects for parametrizing the vibrational entropy with low-order cluster variables were assessed. To calculate the difference in vibrational entropy of the disordered and ordered alloys, the clusters must be large enough to account for the abundances of several of the atom configurations of the first-nearest-neighbor shell about the Fe-57 atoms.

Published
2000

5. Versatile N,C,N Coordiantion Behaviour of a Monoanionic Aryldiamine Ligand in Ruthenium(II) Complexes: Syntheses and Crystal structures of [RuII{C6H3(CH2NMe2)2-2,6}X(L)](L=Norbornadiene, X=Cl, SO3CF3; L=PPh3, X=I) and [RuII{C6H3(CH2NMe2)2-2,6}(2,2':6',2'-terpyridine)]Cl

Author

Koten, G. van, Sutter, J-P, James, S.L., Karlen, T., Grove, D.M., Veldman, N., Smeets, W.J.J., Spek, A.L., Koten, G. van, Sutter, J-P, James, S.L., Karlen, T., Grove, D.M., Veldman, N., Smeets, W.J.J., and Spek, A.L.

Published
1996

6. Versatile N,C,N Coordiantion Behaviour of a Monoanionic Aryldiamine Ligand in Ruthenium(II) Complexes: Syntheses and Crystal structures of [RuII{C6H3(CH2NMe2)2-2,6}X(L)](L=Norbornadiene, X=Cl, SO3CF3; L=PPh3, X=I) and [RuII{C6H3(CH2NMe2)2-2,6}(2,2':6',2'-terpyridine)]Cl

Author

Koten, G. van, Sutter, J-P, James, S.L., Karlen, T., Grove, D.M., Veldman, N., Smeets, W.J.J., Spek, A.L., Koten, G. van, Sutter, J-P, James, S.L., Karlen, T., Grove, D.M., Veldman, N., Smeets, W.J.J., and Spek, A.L.

Published
1996

7. Versatile N,C,N Coordiantion Behaviour of a Monoanionic Aryldiamine Ligand in Ruthenium(II) Complexes: Syntheses and Crystal structures of [RuII{C6H3(CH2NMe2)2-2,6}X(L)](L=Norbornadiene, X=Cl, SO3CF3; L=PPh3, X=I) and [RuII{C6H3(CH2NMe2)2-2,6}(2,2':6',2'-terpyridine)]Cl

Author

Koten, G. van, Sutter, J-P, James, S.L., Karlen, T., Grove, D.M., Veldman, N., Smeets, W.J.J., Spek, A.L., Koten, G. van, Sutter, J-P, James, S.L., Karlen, T., Grove, D.M., Veldman, N., Smeets, W.J.J., and Spek, A.L.

Published
1996

8. Versatile N,C,N Coordiantion Behaviour of a Monoanionic Aryldiamine Ligand in Ruthenium(II) Complexes: Syntheses and Crystal structures of [RuII{C6H3(CH2NMe2)2-2,6}X(L)](L=Norbornadiene, X=Cl, SO3CF3; L=PPh3, X=I) and [RuII{C6H3(CH2NMe2)2-2,6}(2,2':6',2'-terpyridine)]Cl

Author

Koten, G. van, Sutter, J-P, James, S.L., Karlen, T., Grove, D.M., Veldman, N., Smeets, W.J.J., Spek, A.L., Koten, G. van, Sutter, J-P, James, S.L., Karlen, T., Grove, D.M., Veldman, N., Smeets, W.J.J., and Spek, A.L.

Published
1996

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