Skip to main content
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.

Neel Ordering in the Distorted Honeycomb Pyrosilicate: C-Er2Si2O7



Gavin Hester, T. N. DeLazzer, S. S. Lim, Craig Brown, K. A. Ross


The rare-earth pyrosilicate family of compounds (RE2Si2O7) hosts a variety of polymorphs, some with honeycomb-like geometries of the rare-earth sublattices, and the magnetism has yet to be deeply explored in many of the cases. Here we report on the ground state properties of C-Er2Si2O7. C-Er2Si2O7 crystallizes in the C2/m space group and the Er3+ atoms form a distorted honeycomb lattice in the a-b plane. We have utilized specific heat, DC susceptibility, and neutron diffraction measurements to characterize C-Er2Si2O7. Our specific heat and DC susceptibility measurements show signatures of antiferromagnetic ordering at 2.3 K. Neutron powder diffraction confirms this transition temperature and the relative intensities of the magnetic Bragg peaks are consistent with a collinear Neel state in the magnetic space group C2'/m, with ordered moment of 6.61 υB canted 13 ° away from the c-axis toward the a-axis. These results are discussed in relation to the isostructural quantum dimer magnet compound Yb2Si2O7.
Journal of Physics Condensed Matter


magnetism, structure


Hester, G. , DeLazzer, T. , Lim, S. , Brown, C. and Ross, K. (2021), Neel Ordering in the Distorted Honeycomb Pyrosilicate: C-Er<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>, Journal of Physics Condensed Matter (Accessed May 19, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created January 17, 2021, Updated September 21, 2021