Jamie L. Manson
Enhancing easy-plane anisotropy in bespoke Ni(II) quantum magnets
Manson, Jamie L.; Manson, Zachary E.; Sargent, Ashley; Villa, Danielle Y.; Etten, Nicole L.; Blackmore, William J.A.; Curley, Samuel P.M.; Williams, Robert C.; Brambleby, Jamie; Goddard, Paul A.; Ozarowski, Andrew; Wilson, Murray N.; Huddart, Benjamin M.; Lancaster, Tom; Johnson, Roger D.; Blundell, Stephen J.; Bendix, Jesper; Wheeler, Kraig A.; Lapidus, Saul H.; Xiao, Fan; Birnbaum, Serena; Singleton, John
Authors
Zachary E. Manson
Ashley Sargent
Danielle Y. Villa
Nicole L. Etten
William J.A. Blackmore
Samuel P.M. Curley
Robert C. Williams
Jamie Brambleby
Paul A. Goddard
Andrew Ozarowski
Murray N. Wilson
Benjamin Huddart benjamin.m.huddart@durham.ac.uk
Academic Visitor
Professor Tom Lancaster tom.lancaster@durham.ac.uk
Professor
Roger D. Johnson
Stephen J. Blundell
Jesper Bendix
Kraig A. Wheeler
Saul H. Lapidus
Fan Xiao
Serena Birnbaum
John Singleton
Abstract
We examine the crystal structures and magnetic properties of several S = 1 Ni(II) coordination compounds, molecules and polymers, that include the bridging ligands HF2-, AF62- (A = Ti, Zr) and pyrazine or non-bridging ligands F-, SiF62-, glycine, H2O, 1-vinylimidazole, 4-methylpyrazole and 3-hydroxypyridine. Pseudo-octahedral NiN4F2, NiN4O2 or NiN4OF cores consist of equatorial Ni-N bonds that are equal to or slightly longer than the axial Ni-Lax bonds. By design, the zero-field splitting (D) is large in these systems and, in the presence of substantial exchange interactions (J), can be difficult to discriminate from magnetometry measurements on powder samples. Thus, we relied on pulsed-field magnetization in those cases and employed electron-spin resonance (ESR) to confirm D when J << D. The anisotropy of each compound was found to be easy-plane (D > 0) and range from ≈ 8-25 K. This work reveals a linear correlation between the ratio d(Ni-Lax)/d(Ni-Neq) and D although the ligand spectrochemical properties may also be important. We assert that this relationship allows us to predict the type of magnetocrystalline anisotropy in tailored Ni(II) quantum magnets.
Citation
Manson, J. L., Manson, Z. E., Sargent, A., Villa, D. Y., Etten, N. L., Blackmore, W. J., …Singleton, J. (2020). Enhancing easy-plane anisotropy in bespoke Ni(II) quantum magnets. Polyhedron, 180, Article 114379. https://doi.org/10.1016/j.poly.2020.114379
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 17, 2020 |
Online Publication Date | Jan 22, 2020 |
Publication Date | Apr 1, 2020 |
Deposit Date | Jan 24, 2020 |
Publicly Available Date | Mar 29, 2024 |
Journal | Polyhedron |
Print ISSN | 0277-5387 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 180 |
Article Number | 114379 |
DOI | https://doi.org/10.1016/j.poly.2020.114379 |
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Copyright Statement
© 2020 The Authors. Published by Elsevier Ltd. This an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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