Self-organized vacancy order in Pr9Ge16
DOI
10.1103/1jfr-6fkb
Abstract
In this work, we report the discovery of a new crystal structure on the Ge-rich side of the Pr-Ge binary phase diagram. Using a high-temperature flux technique, we grew single crystals of Pr9Ge16, which adopt a previously unreported orthorhombic Fdd2 structure type featuring ordered Ge vacancies. We present the anisotropic magnetic properties and identify the crystallographic b axis perpendicular to the crystal plane as the magnetic easy axis. Temperature-dependent resistivity measurements reveal metallic behavior with a distinct anomaly at TC = 14.3 K. Hall resistivity data indicate that electronlike carriers dominate, with a carrier concentration on the order of 1027 m−3. The magnetic order is readily suppressed by a magnetic field of approximately 0.4 T applied along the easy b axis.
Recommended Citation
Wickramasinghe, Jayashani S. T.; Anderson, Melissa G.; Grayville, Kelci; McCandless, Gregory T.; Morgan, Zachary J.; Billingsley, Brianna R.; Kong, Tai; Kim, Hyunsoo; Chernatynskiy, Aleksandr V.; Mitchell, Simon G.; Wu, Liang; Chan, Julia Y.; Ye, Feng; and Hodovanets, Halyna, "Self-organized vacancy order in Pr9Ge16" (2026). Research Data. 18.
https://scholarsmine.mst.edu/research_data/18
The definitive version is available at https://doi.org/10.1103/1jfr-6fkb
Department(s)
Physics
Second Department
Chemistry
Research Center/Lab(s)
Materials Research Center
Document Type
Data
Document Version
Citation
File Format
text
Language(s)
English
Rights
© 2026 American Physical Society, All rights reserved
Publication Date
5 August 2026
Comments
Acknowledgements:
The authors thank D. Mandrus for fruitful discussions. J.S.T.W. and H.H. acknowledge support from the U.S. National Science Foundation Division of Materials Research Award No. DMR-2316869. Magnetization measurement performed at the University of Arizona was supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES) under Award No. DE-SC0025301. B.R.B. acknowledges support from the U.S. National Science Foundation under Award No. DGE-2137419. A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The beam time was allocated to TOPAZ on Proposal No. IPTS-34800.1. The authors acknowledge Alexis Dominguez Montero and Christina Hoffmann for the initial collection of neutron diffraction data at TOPAZ. J.Y.C. acknowledges Welch Foundation AA-2056-20240404, and M.G.A. acknowledges DE-SC0022854 for partial support of this project. The SHG work by S.G. and L.W. was supported by the US Office of Naval Research through the Grant No. N00014-24-1-2064.