TY - JOUR
AU - Sheptyakov, Denis
AB - The magnetic structures of Cu(W1-xMox)O4 compounds withwolframite-type structure at 1.5 K have been determined by neutronpowder diffraction for average composition x  0.15, 0.25 and 0.35. Forx  0.15the magnetic structure is antiferromagnetic with a magnetic unit cell doubled along thea-axis,  (1/2, 0, 0),i.e. the same magnetic structure as for CuWO4. For x  0.25 and 0.35two magnetic structures are observed: one is identical to that for x  0.15,while the other is doubled with respect to thec-axis,  (0, 0, 1/2),i.e. the same magnetic structure as for the high-pressure modificationCuMoO4 III. The coexistence of these two magnetic arrangements isinterpreted as reflecting a slightly inhomogeneous contribution of Mo andW in different crystallites together with a sharp transition between thestability ranges of the two types of magnetic structure with respect tox. Thespecific Mo:W distributions in the grains of the powdered samples were deduced froma profile analysis based on high-resolution synchrotron powder diffraction data.No additional, intermediate magnetic phase with  (1/2, 1/2, 0)was found in Cu(W0.75Mo0.25)O4, in contrast to predictions in the frameworkof extended Hckel calculations based on the precise crystal structure.
TI - The crystal and magnetic structure relationship in Cu(W1-xMox)O4 compounds with wolframite-type structure
JF - Journal of Physics: Condensed Matter
DO - 10.1088/0953-8984/14/36/313
DA - 2002-09-16
UR - https://www.deepdyve.com/lp/iop-publishing/the-crystal-and-magnetic-structure-relationship-in-cu-w1-xmox-o4-l98M6CasSJ
SP - 8573
VL - 14
IS - 36
DP - DeepDyve
ER -