NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Magnetic Structure and Dzyaloshinskii-Moriya Interaction in the S=1/2 Helical-Honeycomb Antiferromagnet α-Cu2V2O7

Published

Author(s)

G. Gitgeatpong, Yang Zhao, M. Avdeev, R. O. Piltz, T. J. Sato, K. Matan

Abstract

Magnetic properties of the S = 1/2 quasi-one-dimensional antiferromagnet alph}Cu2V2O7 have been studied using magnetization and neutron scattering measurements. Magnetic susceptibility shows a broad peak at 50 K 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 (JCW = 6.3(1) meV), whereas the Bonner-Fisher fit yields the antiferromagnetic intra-chain coupling of JBF = 2.99(2) meV. The discrepancy in the exchange interaction suggests a highly anisotropic network of spins with a sizeable inter-chain interaction. 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 of 0.420(3) meV. Neutron diffraction reveals that the S=1/2 Cu2+ spins along a zigzag chain antiferromagnetically align in the Fd'd'2 magnetic space group. The ordered moment of 0.93(9) υB is predominantly along the crystallographic a-axis.
Citation
Physical Review B
Volume
92
Issue
2
Pub Type
Journals

Download Paper

Local Download

Keywords

Magnetic structure, neutron scattering

Citation

Gitgeatpong, G. , Zhao, Y. , Avdeev, M. , Piltz, R. , Sato, T. and Matan, K. (2015), Magnetic Structure and Dzyaloshinskii-Moriya Interaction in the S=1/2 Helical-Honeycomb Antiferromagnet &#945;-Cu<sub>2</sub>V<sub>2</sub>O<sub>7</sub>, Physical Review B, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918027 (Accessed October 13, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created July 23, 2015, Updated October 12, 2021
Was this page helpful?