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

doi:10.1088/1361-648x/ab2cb6

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

Authors

Professor Tom Lancaster tom.lancaster@durham.ac.uk
Professor

Benjamin Huddart benjamin.m.huddart@durham.ac.uk
Academic Visitor

RC Williams

F Xiao

KJA Franke

PJ Baker

FL Pratt

SJ Blundell

JA Schlueter

MB Mills

AC Maahs

KE Preuss

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., …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