Abstract
We present the results of a muon-spin relaxation study of the high- analog material . We find unambiguous evidence for magnetic order, intrinsic to the material, below . The ratio of interplane to intraplane coupling is estimated to be , while fits of the temperature dependence of the order parameter reveal a critical exponent , implying an intermediate character between pure two- and three-dimensional magnetism in the critical regime. Above we observe a signal characteristic of dipolar interactions due to linear bonds, allowing the muon stopping sites in this compound to be characterized.
- Received 4 April 2007
DOI:https://doi.org/10.1103/PhysRevB.75.220408
©2007 American Physical Society