Magnetic ground states of RMn4Al8, R = La, Pr, Y
Rainford, B.D., Leavey, C.J., Hillier, A.D. and Stewart, J.R. (2005) Magnetic ground states of RMn4Al8, R = La, Pr, Y. Physica B: Condensed Matter, 359, 929-931. (doi:10.1016/j.physb.2005.01.266).
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Description/Abstract
Yamasaki et al. (Solid State Commun. 119 (2001) 415) have suggested that LaMn4Al8 is a nearly antiferromagnetic metal with linear chains of Mn atoms. We present evidence from ZF-μSR measurements that both LaMn4Al8 and the related compound PrMn4Al8 display antiferromagnetic order at low temperatures. In LaMn4Al8 the μSR relaxation rate rises to a peak at 4.5 K; below this temperature the asymmetry decreases smoothly. In PrMn4Al8 well-defined oscillations appear below 35 K. Neutron crystal field spectroscopy suggests a singlet ground state for the Pr3+ ion, so it is likely that the internal field seen by the muons arises from ordered Mn moments. YMn4Al8 shows no sign of magnetic correlations down to 1.2 K.
| Item Type: | Article |
|---|---|
| ISSNs: | 0921-4526 (print) |
| Related URLs: | |
| Keywords: | low-dimensional magnetism, LaMn4Al8, PrMn4Al8, μSR, magnetic order |
| Subjects: | Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Physics and Astronomy |
| Item ID: | 57565 |
| Date Deposited: | 13 Aug 2008 |
| Last Modified: | 01 Jun 2011 09:37 |
| Contributors: | Rainford, B.D. (Author) Leavey, C.J. (Author) Hillier, A.D. (Author) Stewart, J.R. (Author) |
| Date: | 2005 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/57565 |
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