Intrinsic magnetic order in Cs2AgF4 detected by muon-spin relaxation

Lancaster, T, Blundell, S J, Baker, P J, Hayes, W, Giblin, S R, McLain, S E, Pratt, F L, Salman, Z, Jacobs, E A, Turner, J F C and Barnes, T (2007) Intrinsic magnetic order in Cs2AgF4 detected by muon-spin relaxation. Physical Review B, 75 (2). p. 220408. ISSN 1098-0121

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We present the results of a muon-spin relaxation study of the high-Tc analog material Cs2AgF4. We find unambiguous evidence for magnetic order, intrinsic to the material, below TC=13.95(3) K. The ratio of interplane to intraplane coupling is estimated to be |J[prime]/J|=1.9102, while fits of the temperature dependence of the order parameter reveal a critical exponent beta=0.292(3), implying an intermediate character between pure two- and three-dimensional magnetism in the critical regime. Above TC we observe a signal characteristic of dipolar interactions due to linear F-+-F bonds, allowing the muon stopping sites in this compound to be characterized.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Depositing User: EPrints Services
Date Deposited: 06 Feb 2012 18:53
Last Modified: 19 Mar 2012 17:04
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