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pro vyhledávání: '"Hans Weitzel"'
Autor:
Hans Weitzel
Publikováno v:
Sudhoffs Archiv. 93:127-170
Autor:
Michael Knapp, Brunhilde Thybusch, Garry J. McIntyre, Hans Weitzel, Helmut Ehrenberg, Bjoern Schwarz, Anatoliy Senyshyn, Hartmut Fuess
Publikováno v:
Philosophical Magazine. 88:1235-1258
For a solid solution series the common description of a crystal as a homogeneous solid formed by a repeating, three-dimensional pattern of a unit cell is in principle no longer applicable, taking the statistical chemical distribution of the substitut
Publikováno v:
Journal of Magnetism and Magnetic Materials. 305:57-62
Field-induced spin-flop transitions in αα-MnMoO4 are summarized in magnetic H–TH–T phase diagrams for different directions of the applied magnetic field up to 12 T. The antiferromagnetic arrangement in the spin-flop phase is preserved at least
Publikováno v:
Solid State Sciences. 7:791-795
The monoclinic wolframite-type structure FeNbO4-III with complete Fe- and Nb-order on two different crystallographic sites is the polymorph stable at room temperature. Cation ordering is activated by annealing, different domain structures are formed
Autor:
E. Muessig, Clemens Ritter, Helmut Ehrenberg, Thorsten Buhrmester, Kirill G. Bramnik, Hans Weitzel
Publikováno v:
Journal of Magnetism and Magnetic Materials. 261:353-359
The magnetic structure of Fe 2 Mo 3 O 12 was determined by neutron powder diffraction and magnetization studies. The magnetic unit cell is identical with the monoclinic chemical one ( Z =8), and the magnetic space group is P2 1 /a. The magnetic momen
Autor:
G. Wltschek, Yvonne Gassenbauer, Ralf Theissmann, Helmut Ehrenberg, Thilo Herrmannsdörfer, Hartmut Fuess, Hans Weitzel, Denis Sheptyakov, Michael Knapp
Publikováno v:
Journal of Physics: Condensed Matter. 14:8573-8581
The magnetic structures of Cu(W1-xMox)O4 compounds with wolframite-type structure at 1.5 K have been determined by neutron powder diffraction for average composition x = 0.15, 0.25 and 0.35. For x = 0.15 the magnetic structure is antiferromagnetic wi
Publikováno v:
Journal of Materials Science. 37:4431-4436
The real structure of FeNbO4 was determined by a combination of electron microscopy investigations and high resolution synchrotron powder diffraction. It is shown that the order-disorder phase transition from the orthorhombic high-temperature modific
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 215:752-756
NaNO3, Synchrotron X-ray diffraction at 100 K: λ = 0.56Å, R-3c, a = 5.0655(5) Å, c = 16.577(3) Å, V = 368.4 Å3, Z = 6, F(000) = 78e, refinement on |F|. Anharmonic motion of N and O up to the fourth order of a Gram-Charlier expansion and multipol
Publikováno v:
Physical Review B. 62:12146-12155
Neutron-diffraction and magnetization experiments have been performed on a single crystal of ${\mathrm{CoNb}}_{2}{\mathrm{O}}_{6}$ with an external magnetic field applied along different directions within the $\mathrm{ac}$ plane. Intermediate magneti