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Crystal structure and magnetic properties of the coupled spin dimer compound SrCu2(TeO3)2Cl2

MPS-Authors
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Johnsson,  M.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Kremer,  R. K.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Lemmens,  P.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Takagi, R., Johnsson, M., Kremer, R. K., & Lemmens, P. (2006). Crystal structure and magnetic properties of the coupled spin dimer compound SrCu2(TeO3)2Cl2. Journal of Solid State Chemistry, 179(12), 3763-3767.


Cite as: https://hdl.handle.net/21.11116/0000-000E-FED6-3
Abstract
Single crystals of the strontium copper tellurium oxochloride
SrCu2,(TeO3)(2)C]2 were synthesized via solid-gas reactions in sealed
evacuated silica tubes. The compound crystallizes in the monoclinic
system, space group P2(1), a = 7.215(2), b = 7.2759(15), c = 8.239(2)
angstrom, beta = 96.56(4)degrees, Z = 2. The building units are
[SrO6Cl2] irregular polyhedra, [CuO4] and [CuO3Cl] square planes,
[TeO3E] tetrahedra and [TeO3+1E] trigonal bipyramids; E being the 5s(2)
lone pair of Te(W). The Cu atoms can be regarded as forming a chain of
weakly connected dimers. The magnetic susceptibility of the compound
shows a broad maximum typical for antiferromagnetic spin fluctuations
with a non-magnetic ground state. A Heisenberg spin model with coupled
s = 1/2 dimers leads to a satisfactory fitting of the experimental
data. (c) 2006 Elsevier Inc. All rights reserved.