Abstract
Co-substituted Ni1-xCoxBr2 (0≤x≤1) single crystals were synthesized using vapor transport. The physical properties of the crystals were characterized by x-ray powder diffraction, magnetization, and specific-heat measurements. Room-temperature x-ray powder diffraction data indicate that a change from the CdCl2 structure type to the CdI2 structure type occurs within 0.56<x<0.76. NiBr2 has a commensurate antiferromagnetic phase below TN≈46K and an incommensurate magnetic ground state below TIC≈20K. Both magnetic transitions are affected by cobalt substitution, and the incommensurate phase transition is present up to at least x=0.56. The evolution of magnetism has been studied as a function of cobalt content and is summarized in the temperature-composition phase diagram.
| Original language | English |
|---|---|
| Article number | 034005 |
| Journal | Physical Review Materials |
| Volume | 3 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 25 2019 |
Funding
This research was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. We thank D. Parker and C. D. Batista for helpful discussions.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | |
| Office of Science | |
| Basic Energy Sciences | |
| Division of Materials Sciences and Engineering |