Temperature evolution of structural and magnetic properties of stoichiometric LiCu2O2: correlation of thermal expansion coefficient and magnetic order

Abstract

Temperature-dependent crystallographic and magnetic studies on stoichiometric single crystals of LiCu2O2 are reported. The magnetic properties are similar to earlier findings demonstrating antiferromagnetic ordering below 25 K. Evidence of magnetoelastic coupling is observed in the thermal expansion along the c-direction; not only at the low temperature antiferromagnetic transitions, but an anomalous behavior of the thermal expansion indicate magnetoelastic coupling also to the magnetic ordering related to a weak spontaneous magnetic moment appearing at 150 K. Ac-susceptibility measurements at different frequencies and superposed dc- fields are employed to further characterize this magnetic anomaly.

arXiv comment12 pages, 5 figures

References in corpus (16)

• Correlation between spin helicity and electric polarization vector in quantum-spin chain magnet LiCu${}_2$O${}_2$
• Reply to Comment on "Competition between helimagnetism and commensurate quantum spin correlations in LiCu2O2"
• Spin waves and magnetic interactions in LiCu2O2
• Chiral order and electromagnetic dynamics in one-dimensional multiferroic cuprates
• Multiferroicity in the spin-1/2 quantum matter of LiCu2O2
• Studies of Multiferroic System of LiCu2O2 II Magnetic Structures of Two Ordered Phases with Incommensurate Modulations
• Enhancement of antiferromagnetic interaction and transition temperature in M3TeO6 systems (M = Mn, Co, Ni, Cu)
• Studies of Multiferroic System LiCu2O2 I Sample Characterization and Relationship between Magnetic Properties and Multiferroic Nature
• Magnetic Phase Transitions in the double spin-chains compound $\mathrm{LiC}{\mathrm{u}}_2{\mathrm{O}}_2$
• Magnetic phase diagram of the frustrated S=1/2 chain magnet LiCu_2O_2
• Li non-stoichiometry and crystal growth of untwinned 1D quantum spin system Lix Cu2 O2
• Anisotropic dielectric and ferroelectric response of multiferroic LiCu2O2 in magnetic field
• Magnetic structure of the frustrated S=1/2 chain magnet LiCu2O2 doped with nonmagnetic Zn
• Nonmagnetic impurity perturbation to the quasi-two-dimensional quantum helimagnet LiCu2O2
• High-temperature structural phase transition in multiferroic LiCu_2O_2
• Temperature-Dependent Anomalies in the Structure of the (001) Surface of LiCu2O2