| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1816753 | Physica B: Condensed Matter | 2006 | 4 Pages |
Abstract
We report muon-spin rotation, heat capacity, magnetization, and AC magnetic susceptibility measurements of the magnetic properties of the layered spin-1/2 antiferromagnet NaNiO2. These show the onset of long-range magnetic order below TN=19.5K. The temperature dependence of the muon precession frequency suggests 2D XY magnetic ordering. Rapid muon depolarization persisting to about 5K above TN is consistent with the presence of short-range magnetic order. Our AC susceptibility measurements suggest that magnetic clusters persist above 25K, with their volume fraction decreasing with increasing temperature, and that there is a slowing of spin fluctuations at Tsf=3K. A partial magnetic phase diagram has been deduced.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
P.J. Baker, T. Lancaster, S.J. Blundell, M.L. Brooks, W. Hayes, D. Prabhakaran, F.L. Pratt,