| Title: |
Spatially anisotropic S=1 square-lattice antiferromagnet with single-ion anisotropy realized in a Ni(II) pyrazine- n,n′ -dioxide coordination polymer |
| Authors: |
Manson, JL; Pajerowski, DM; Donovan, JM; Twamley, B; Goddard, PA; Johnson, R; Bendix, J; Singleton, J; Lancaster, T; Blundell, SJ; Herbrych, J; Baker, PJ; Steele, AJ; Pratt, FL; Franke-Chaudet, I; McDonald, RD; Plonczak, A; Manuel, P |
| Source: |
Physical Review B , 108 (9) , Article 094425. (2023) |
| Publisher Information: |
American Physical Society (APS) |
| Publication Year: |
2023 |
| Collection: |
University College London: UCL Discovery |
| Description: |
The Ni(NCS)2(pyzdo)2 coordination polymer is found to be an S=1 spatially anisotropic square lattice with easy-axis single-ion anisotropy. This conclusion is based upon considering in concert the experimental probes x-ray diffraction, magnetic susceptibility, magnetic-field-dependent heat capacity, muon-spin relaxation, neutron diffraction, neutron spectroscopy, and pulsed-field magnetization. Long-range antiferromagnetic (AFM) order develops at TN=18.5K. Although the samples are polycrystalline, there is an observable spin-flop transition and saturation of the magnetization at ≈80T. Linear spin-wave theory yields spatially anisotropic exchanges within an AFM square lattice, Jx=0.235meV, Jy=2.014meV, and an easy-axis single-ion anisotropy D=-1.622meV (after renormalization). The anisotropy of the exchanges is supported by density functional theory. |
| Document Type: |
article in journal/newspaper |
| File Description: |
text |
| Language: |
English |
| Relation: |
https://discovery.ucl.ac.uk/id/eprint/10178683/1/PhysRevB.108.094425.pdf; https://discovery.ucl.ac.uk/id/eprint/10178683/ |
| Availability: |
https://discovery.ucl.ac.uk/id/eprint/10178683/1/PhysRevB.108.094425.pdf; https://discovery.ucl.ac.uk/id/eprint/10178683/ |
| Rights: |
open |
| Accession Number: |
edsbas.B74837F1 |
| Database: |
BASE |