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pro vyhledávání: '"Proffen, Thomas"'
Akademický článek
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Autor:
Thygesen, Peter M. M., Young, Callum A., Beake, Edward O. R., Romero, Fabio Denis, Connor, Leigh D., Proffen, Thomas E., Phillips, Anthony E., Tucker, Matthew G., Hayward, Michael A., Keen, David A., Goodwin, Andrew L.
Publikováno v:
Phys. Rev. B 95, 174107 (2017)
We use a combination of neutron and X-ray total scattering measurements together with pair distribution function (PDF) analysis to characterise the variation in local structure across the orbital order--disorder transition in LaMnO$_3$. Our experimen
Externí odkaz:
http://arxiv.org/abs/1702.06346
Akademický článek
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Autor:
Kupwade-Patil, Kunal, Boul, Peter J., Rasner, Diana K., Everett, S. Michelle, Proffen, Thomas, Page, Katharine, Ma, Dong, Olds, Daniel, Thaemlitz, Carl J., Büyüköztürk, Oral
Publikováno v:
In Cement and Concrete Research December 2019 126
Autor:
Shoemaker, Daniel P., Abumohor, Ivana Sabaj, Rodriguez, Efrain E., Proffen, Thomas, Seshadri, Ram
Publikováno v:
Phys. Rev. B 80, 144422 (2009) [9 pages]
Bulk specimens of the hetaerolite solid solution Zn$_x$Mn$_{3-x}$O$_4$, with $x$ = 0, 0.25, 0.5, 0.75, and 1 have been prepared as homogeneous, phase-pure polycrystalline samples as ascertained by neutron diffraction measurements. Samples with $x$ =
Externí odkaz:
http://arxiv.org/abs/0906.3534
Autor:
Rodriguez, Efrain E., Llobet, Anna, Proffen, Thomas, Melot, Brent C., Seshadri, Ram, Littlewood, Peter B., Cheetham, Anthony K.
Publikováno v:
J. Appl. Phys., vol. 105, (2009) 114901
Time-of-flight neutron powder diffraction and specific heat measurements were used to study the nature of thermal expansion in rhenium trioxide, an electrically conducting oxide with cubic symmetry. The temperature evolution of the lattice parameters
Externí odkaz:
http://arxiv.org/abs/0812.1187
Autor:
Melot, Brent C., Page, Katharine, Seshadri, Ram, Stoudenmire, E. M., Balents, Leon, Bergman, Doron L., Proffen, Thomas
The spinels CoB$_2$O$_4$ with magnetic Co$^{2+}$ ions on the diamond lattice A site can be frustrated because of competing near-neighbor ($J_1$) and next-near neighbor ($J_2$) interactions. Here we describe attempts to tune the relative strengths of
Externí odkaz:
http://arxiv.org/abs/0811.1386
Publikováno v:
Phys. Rev. Lett 101 (2008) 205502(1-4)
Near or less than 10% Nb substitution on the Ti site in perovskite SrTiO$_3$ results in metallic behavior, in contrast to what is seen in BaTiO$_3$. Given the nearly identical structure and electron counts of the two materials, the distinct ground st
Externí odkaz:
http://arxiv.org/abs/0808.1308
In this paper we investigated the most important family of proton conducting oxides, i.e. cerates, by means of pair distribution function analysis (PDF) obtained from total neutron scattering data. The results clearly demonstrates that the local stru
Externí odkaz:
http://arxiv.org/abs/0808.1162
Autor:
Kim, Young-Il, Cadars, Sylvian, Shayib, Ramzy, Proffen, Thomas, Feigerle, Charles S., Chmelka, Bradley F., Seshadri, Ram
Publikováno v:
Phys. Rev. B 78, 195205 (2008) (12 pages)
Local compositions and structures of Zn_{1-x}Mg_{x}O alloys have been investigated by Raman and solid-state {67}Zn/{25}Mg nuclear magnetic resonance (NMR) spectroscopies, and by neutron pair-distribution-function (PDF) analyses. The E2(low) and E2(hi
Externí odkaz:
http://arxiv.org/abs/0808.0492