| 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 |
| Publisher Information: |
American Physical Society |
| Publication Year: |
2023 |
| Collection: |
Oxford University Research Archive (ORA) |
| 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 ≈80 T. Linear spin-wave theory yields spatially anisotropic exchanges within an AFM square lattice, Jx =0.235 meV, Jy =2.014 meV, and an easy-axis single-ion anisotropy D = −1.622 meV (after renormalization). The anisotropy of the exchanges is supported by density functional theory. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
https://doi.org/10.1103/PhysRevB.108.094425 |
| DOI: |
10.1103/PhysRevB.108.094425 |
| Availability: |
https://doi.org/10.1103/PhysRevB.108.094425; https://ora.ox.ac.uk/objects/uuid:5c6853d2-3da0-4ce4-877f-3589f47c11dc |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.BE10EF0E |
| Database: |
BASE |