Zobrazeno 1 - 10
of 145
pro vyhledávání: '"E. Holland-Moritz"'
Autor:
G. Coddens, J. Fitter, Bernd Büchner, S. Longeville, R. E. Lechner, M. Ferrand, E. Holland-Moritz, M. Roepke, H. Berg, R. Kahn
Publikováno v:
Physical Review B. 60:9793-9800
We have performed inelastic magnetic neutron scattering experiments on ${\mathrm{La}}_{2\ensuremath{-}x\ensuremath{-}y}{\mathrm{Sr}}_{x}{\mathrm{Nd}}_{y}{\mathrm{CuO}}_{4} (0l~xl~0.2$ and $0.1l~yl~0.6)$ in order to study the Nd $4f$-spin dynamics at
Publikováno v:
Journal of Physics and Chemistry of Solids. 59:2233-2236
We performed inelastic magnetic neutron scattering experiments on the high-Tc superconductor La2−x−ySrxREyCuO4 with RE=Dy (x=0, 0.25 and y=0.09) and RE=Nd (x=0, 0.12, 0.15, 0.2 and y=0.1, 0.3). In this system an additional low temperature phase t
Autor:
E. Holland-Moritz, Albrecht Mewis, W. Schlabitz, Bernd Büchner, Vladislav Kataev, T Niemöller, C. Huhnt, H. Micklitz, A. Wurth, Mohsen M. Abd-Elmeguid, M. Roepke, M. Chefki, G. Michels
Publikováno v:
Journal of Physics: Condensed Matter. 8:4055-4062
According to x-ray absorption, Mossbauer effect measurements, lattice constants and static susceptibility, Eu in the novel compound is non-integral valent with a valence of the order of 2.2. On the other hand, the compound orders antiferromagneticall
Autor:
A. Severing, E. Holland-Moritz, J. Harnischmacher, W. Schlabitz, H. Drößler, J. Kalenborn, H.-D. Jostarndt, Ulrich Walter
Publikováno v:
Zeitschrift für Physik B Condensed Matter. 100:1-11
The antiferromagnetic ordering temperatures of the rare earth (RE) moments in RE Ba2 Cu3O7-gd, obtained from specific heat measurements, are roughly in agreement with the de Gennes factors, i.e., the ordering mechanism can be mainly seen as an indire
Publikováno v:
Journal of Alloys and Compounds. 225:578-585
We present some results pertaining to the crystal field (CF) interactions in high T c rare earth (RE) cuprates and related layered compounds and manifestations of their impact on magnetic properties. We show that the widely disputed specific-heat and
Autor:
Mohsen M. Abd-Elmeguid, C. Huhnt, W. Scharbrodt, G. Michels, E. Holland-Moritz, D. Johrendt, V. Keimes, H. Micklitz, A. Mewis, W. Schlabitz
Publikováno v:
Zeitschrift f�r Physik B Condensed Matter. 98:75-88
We report on measurements of the lattice constants, magnetic susceptibility, LIII X-ray absorption and Mossbauer-effect on EuNiP and EuPdP, which crystallize in the hexagonal layered Ni2In structure. In both compounds the Eu valence above 510 K is 2.
Autor:
W. Schlabitz, Mohsen M. Abd-Elmeguid, C. Huhnt, E. Holland-Moritz, A. Mewis, G. Michels, W. Scharbrodt
Publikováno v:
Physica B: Condensed Matter. :408-411
We report on measurements of lattice constants as a function of pressure and temperature on EuPdAs and EuPtP (EuTX), which crystallize in the hexagonal layered Ni2In structure. Below room temperature the valence changes dramatically (Δν ≅ 0.16) a
Publikováno v:
Physica B: Condensed Matter. :756-759
We present specific heat and inelastic magnetic neutron scattering data on REBa2Cu3O7−δ (Re = rare earth). Independent of the oxygen content drastic anomalies are observed in the temperature behaviour of the magnetic neutron scattering response. T
Autor:
Vladislav Kataev, E. Holland-Moritz, C. Huhnt, G. Michels, G. G. Khaliullin, W. Schlabitz, A. Mewis
Publikováno v:
Journal of Magnetism and Magnetic Materials. 137:157-166
We report on an X-band ESR study performed together with dc susceptibility measurements of the ternary europium-transition element-pnictides EuNiP, EuPtP and EuPdAs, which show temperature-dependent mixed valency of Eu and also of EuCuP and EuAuSb wi
Autor:
S. Junk, E. Holland-Moritz, Albrecht Mewis, Mohsen M. Abd-Elmeguid, J Dunner, G. Michels, W. Schlabitz
Publikováno v:
Journal of Physics: Condensed Matter. 6:1769-1778
From Mossbauer effect, lattice constant and susceptibility measurements we show that Eu is nearly divalent in Eu(Cu,Ag,Au)(P,As,Sb). However, the LIII X-ray absorption spectra consist of a pronounced double structure, suggesting a non-integral mean E