Magnetic structure and dzyaloshinskii-moriya interaction in the S=12 helical-honeycomb antiferromagnet α−Cu2V2O7

Simple item page
dc.contributor.authorGitgeatpong, Gen_AU
dc.contributor.authorZhao, Yen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorPiltz, ROen_AU
dc.contributor.authorSato, TJen_AU
dc.contributor.authorMatan, Ken_AU
dc.date.accessioned2021-01-18T21:32:42Zen_AU
dc.date.available2021-01-18T21:32:42Zen_AU
dc.date.issued2015-07-23en_AU
dc.date.statistics2021-01-11en_AU
dc.description.abstractMagnetic properties of the S=12 antiferromagnet α−Cu2V2O7 have been studied using magnetization, quantum Monte Carlo (QMC) simulations, and neutron diffraction. Magnetic susceptibility shows a broad peak at ∼50K followed by an abrupt increase indicative of a phase transition to a magnetically ordered state at TN=33.4(1) K. Above TN, a fit to the Curie-Weiss law gives a Curie-Weiss temperature of Θ=−73(1) K suggesting the dominant antiferromagnetic coupling. The result of the QMC calculations on the helical-honeycomb spin network with two antiferromagnetic exchange interactions J1 and J2 provides a better fit to the susceptibility than the previously proposed spin-chain model. Two sets of the coupling parameters J1:J2=1:0.45 with J1=5.79(1) meV and 0.65:1 with J2=6.31(1) meV yield equally good fits down to ∼TN. Below TN, weak ferromagnetism due to spin canting is observed. The canting is caused by the Dzyaloshinskii-Moriya interaction with an estimated bc-plane component |Dp|≃0.14J1. Neutron diffraction reveals that the S=12Cu2+ spins antiferromagnetically align in the Fd′d′2 magnetic space group. The ordered moment of 0.93(9) μB is predominantly along the crystallographic a axis. ©2015 American Physical Societyen_AU
dc.identifier.articlenumber24423en_AU
dc.identifier.citationGitgeatpong, G., Zhao, Y., Avdeev, M., Piltz, R. O., Sato, T. J., & Matan, K. (2015) Magnetic structure and dzyaloshinskii-moriya interaction in the S=12 helical-honeycomb antiferromagnet α−Cu2V2O7. Physical Review B, 92(2), 024423. doi:10.1103/PhysRevB.92.024423en_AU
dc.identifier.issn2469-9969en_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.urihttps://doi.org/10.1103/PhysRevB.92.024423en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10250en_AU
dc.identifier.volume92en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectMagnetic propertiesen_AU
dc.subjectAntiferromagnetismen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectMonte Carlo Methoden_AU
dc.subjectPhase transformationsen_AU
dc.subjectSpinen_AU
dc.titleMagnetic structure and dzyaloshinskii-moriya interaction in the S=12 helical-honeycomb antiferromagnet α−Cu2V2O7en_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles