Abstract
This study investigates the structural and magnetic properties of arc-melted (Mo2/3Dy1/3)2AlC polycrystalline samples, a member of the i-MAX phase family. Temperature-dependent magnetization and specific heat measurements confirm the low-temperature antiferromagnetic transitions around 14 K and 17 K. Neutron diffraction data collected at 4 K reveal the emergence of magnetic Bragg peaks that are not allowed in the paramagnetic space group C2/c, further confirming the presence of antiferromagnetic ordering. The detection of a secondary phase, DyAl2, is complicated by overlapping Bragg peaks with the monoclinic phase of (Mo2/3Dy1/3)2AlC in powder XRD patterns. However, magnetization and neutron diffraction data suggest the presence of DyAl2, evidenced by a ferromagnetic phase transition around 62 K.
| Original language | English |
|---|---|
| Article number | 172992 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 624 |
| DOIs | |
| State | Published - Jul 15 2025 |
Funding
We would like to thank Gia Thinh Tran for helpful discussions. We acknowledge the U.S. Department of Energy Office of Science, Basic Energy Sciences, condensed matter physics program (award number DE-SC0024611). This work was produced by Battelle Savannah River Alliance, LLC under Contract No. 89303321CEM000080 with the U.S. Department of Energy. Publisher acknowledges the U.S. Government license to provide public access under the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). This research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The beam time was allocated to HB-2 A (POWDER) on proposal number IPTS-32938.1 and 32431.1. A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by National Science Foundation Cooperative Agreement No. DMR-2128556, the State of Florida and the U.S. Department of Energy. Research presented in this article was supported by the Laboratory Directed Research and Development program of Los Alamos National Laboratory under project number 20240225ER. We would like to thank Gia Thinh Tran for helpful discussions. We acknowledge the U.S. Department of Energy Office of Science, Basic Energy Sciences , condensed matter physics program (award number DE-SC0024611 ). This work was produced by Battelle Savannah River Alliance, LLC under Contract No. 89303321CEM000080 with the U.S. Department of Energy. Publisher acknowledges the U.S. Government license to provide public access under the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The beam time was allocated to HB-2 A (POWDER) on proposal number IPTS-32938.1 and 32431.1. A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by National Science Foundation Cooperative Agreement No. DMR-2128556 and the State of Florida . Research presented in this article was supported by the Laboratory Directed Research and Development program of Los Alamos National Laboratory under project number 20240225ER .
Keywords
- Antiferromagnetic ordering
- Arc melter
- Magnetic susceptibility
- Neutron diffraction
- Polycrystalline
- Rare earth i-MAX phase