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Quasi-one-dimensional spin chains in CuSiO3: an EPR study

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Sichelschmidt,  J.
Jörg Sichelschmidt, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Baenitz,  M.
Michael Baenitz, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Geibel,  C.
Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Steglich,  F.
Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Sichelschmidt, J., Baenitz, M., Geibel, C., Steglich, F., Loidl, A., & Otto, H. H. (2002). Quasi-one-dimensional spin chains in CuSiO3: an EPR study. Applied Magnetic Resonance, 23(1), 75-79. doi:10.1007/BF03166185.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-320B-4
Abstract
Temperature-dependent electron paramagnetic resonance (EPR) studies were performed on CuSiO3. This recently discovered compound is isostructural with the spin-Peierls compound CuGeO3. The EPR signals show characteristics different from those of CuGeO3 and are due to Cu2+ spins located along quasi one-dimensional chains. For T > 8.2 K the spin susceptibility closely follows the predictions of an S = 1/2 one-dimensional Heisenberg antiferromagnet with J/k(B) = 21 K. Below T = 8.2 K the spin susceptibility immediately drops to zero indicating long-range magnetic order.