Abstract
The magnetic behavior of Sn-substituted Sr2IrO4 has been examined through magnetization measurements and single-crystal neutron diffraction on Sr2Ir1-xSnxO4 for 0.05?x?0.35. For all x examined, the magnetic ground state is similar to that induced in Sr2IrO4 by application of a magnetic field. This magnetic state is characterized by a small net moment due to the alignment of canted moments within an otherwise antiferromagnetic structure. The weak ferromagnetic behavior is observed in the magnetization data for both unique crystallographic orientations. Diffraction data reveal an anisotropic response in the lattice parameters, with an overall lattice expansion, as well as a small reduction in the rotation of the IrO6 octahedra. The magnetic ordering temperature is continually suppressed with increasing x, and long-range magnetic order persists to the highest Sn concentrations synthesized.
| Original language | English |
|---|---|
| Article number | 094406 |
| Journal | Physical Review Materials |
| Volume | 2 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 17 2018 |
Funding
This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. This research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. We thank Paula Lampen-Kelley for assistance with preliminary electrical measurements, and we gratefully acknowledge J. Yan and M. A. McGuire for useful discussions. We also acknowledge W. Tien for support during the HB-1A measurements.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | |
| Office of Science | |
| Basic Energy Sciences | |
| Division of Materials Sciences and Engineering |