%0 Journal Article %1 PhysRevB.107.184442 %A Law, J. M. %A Luetkens, H. %A Pascua, G. %A Hansen, Th. %A Glaum, R. %A Wang, Z.-S. %A Wosnitza, J. %A Kremer, R. K. %D 2023 %I American Physical Society %J Phys. Rev. B %K b %N 18 %P 184442 %R 10.1103/PhysRevB.107.184442 %T Neutron diffraction, muon-spin rotation, and high magnetic field investigation of the multiferroic antiferromagnetic quantum spin-chain system CuCrO$_4$ %U https://link.aps.org/doi/10.1103/PhysRevB.107.184442 %V 107 %X Multiferroic behavior in the linear-chain spin S=1/2 compound CuCrO4 was proposed to appear due to competing nearest- and next-nearest-neighbor exchange interactions along the chain. Here, we report on our study of the long-range magnetic ordering using powder neutron diffraction and muon-spin rotation measurements. Consistently, both methods find incommensurate long-range antiferromagnetic ordering below 8.5(3) K. We determined the magnetic structure from neutron powder diffraction patterns based on the propagation vector →τ=(0,0,0.546(1)). At 1.9 K, the magnetic moment of Cu2+ was refined to 0.48(2) μB. The Cu moments form a helicoidal spiral with an easy plane coinciding with the equatorial planes of the Jahn-Teller elongated CuO6 octahedra. Low-temperature high magnetic field measurements of the magnetization and the dielectric polarization show the multiferroic phase to extend up to ∼25 T, after which a new, yet unknown phase appears. Full saturation of the magnetic moment is expected to occur at fields much beyond 60 T.

@article{PhysRevB.107.184442, abstract = {Multiferroic behavior in the linear-chain spin S=1/2 compound CuCrO4 was proposed to appear due to competing nearest- and next-nearest-neighbor exchange interactions along the chain. Here, we report on our study of the long-range magnetic ordering using powder neutron diffraction and muon-spin rotation measurements. Consistently, both methods find incommensurate long-range antiferromagnetic ordering below 8.5(3) K. We determined the magnetic structure from neutron powder diffraction patterns based on the propagation vector →τ=(0,0,0.546(1)). At 1.9 K, the magnetic moment of Cu2+ was refined to 0.48(2) μB. The Cu moments form a helicoidal spiral with an easy plane coinciding with the equatorial planes of the Jahn-Teller elongated CuO6 octahedra. Low-temperature high magnetic field measurements of the magnetization and the dielectric polarization show the multiferroic phase to extend up to ∼25 T, after which a new, yet unknown phase appears. Full saturation of the magnetic moment is expected to occur at fields much beyond 60 T.}, added-at = {2023-08-07T08:08:08.000+0200}, author = {Law, J. M. and Luetkens, H. and Pascua, G. and Hansen, Th. and Glaum, R. and Wang, Z.-S. and Wosnitza, J. and Kremer, R. K.}, biburl = {https://www.bibsonomy.org/bibtex/2a8c985b8938b51d8eb04c6e664f313ea/ctqmat}, day = 30, description = {Phys. Rev. B 107, 184442 (2023) - Neutron diffraction, muon-spin rotation, and high magnetic field investigation of the multiferroic antiferromagnetic quantum spin-chain system ${\mathrm{CuCrO}}_{4}$}, doi = {10.1103/PhysRevB.107.184442}, interhash = {63b2af1c4251ce394891eb112f5f0950}, intrahash = {a8c985b8938b51d8eb04c6e664f313ea}, journal = {Phys. Rev. B}, keywords = {b}, month = {05}, number = 18, numpages = {9}, pages = 184442, publisher = {American Physical Society}, timestamp = {2023-10-18T10:55:43.000+0200}, title = {Neutron diffraction, muon-spin rotation, and high magnetic field investigation of the multiferroic antiferromagnetic quantum spin-chain system CuCrO$_{\mathbf{4}}$}, url = {https://link.aps.org/doi/10.1103/PhysRevB.107.184442}, volume = 107, year = 2023 }