What is it about?
TiOBr undergoes a phase transition at Tc2=47.1(4)K towards an incommensurate superstructure and at Tc1=26.8±0.3K it locks in into a twofold superstructure similar to the low-temperature spin-Peierls state of TiOCl.
Why is it important?
Frustration between intra- and interchain interations within the spin-Peierls scenario, and competition between the two-dimensional magnetic order and one-dimensional spin-Peierls order are discussed as possible sources of the incommensurability.
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This page is a summary of: Incommensurate interactions and nonconventional spin-Peierls transition in TiOBr, Physical Review B, July 2005, American Physical Society (APS), DOI: 10.1103/physrevb.72.020105.
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