Probing magnetic order and disorder in the one-dimensional molecular spin chains CuF2(pyz) and [Ln(hfac)3(boaDTDA)] n (Ln  =  Sm, La) using implanted muons

Lancaster, T; Huddart, BM; Williams, RC; Xiao, F; Franke, KJA; Baker, PJ; Pratt, FL; Blundell, SJ; Schlueter, JA; Mills, MB; Maahs, AC; Preuss, KE

Abstract

We present the results of muon-spin relaxation (SR) measurements on antiferromagnetic and ferromagnetic spin chains. In antiferromagnetic CuF2(pyz) we identify a transition to long range magnetic order taking place at K, allowing us to estimate a ratio with the intrachain exchange of and the ratio of interchain to intrachain exchange coupling as . The ferromagnetic chain [Sm(hfac)3(boaDTDA)] n undergoes an ordering transition at K, seen via a broad freezing of dynamic fluctuations on the muon (microsecond) timescale and implying . The ordered radical moment continues to fluctuate on this timescale down to 0.3 K, while the Sm moments remain disordered. In contrast, the radical spins in [La(hfac)3(boaDTDA)] n remain magnetically disordered down to T  =  0.1 K suggesting .

Citation

Lancaster, T., Huddart, B., Williams, R., Xiao, F., Franke, K., Baker, P., Pratt, F., Blundell, S., Schlueter, J., Mills, M., Maahs, A., & Preuss, K. (2019). Probing magnetic order and disorder in the one-dimensional molecular spin chains CuF2(pyz) and [Ln(hfac)3(boaDTDA)] n (Ln  =  Sm, La) using implanted muons. Journal of Physics: Condensed Matter, 31(39), Article 394002. https://doi.org/10.1088/1361-648x/ab2cb6

• Journal Article Type: Article
• Acceptance Date: Jun 21, 2019
• Online Publication Date: Jul 10, 2019
• Publication Date: Oct 31, 2019
• Deposit Date: Aug 5, 2019
• Publicly Available Date: Jul 10, 2020
• Journal: Journal of Physics: Condensed Matter
• Print ISSN: 0953-8984
• Electronic ISSN: 1361-648X
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 31
• Issue: 39
• Article Number: 394002
• DOI: https://doi.org/10.1088/1361-648x/ab2cb6
• Public URL: https://durham-repository.worktribe.com/output/1291152