Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
57 (1985), S. 3462-3464
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Fe1−xMgxCl2 is a diluted Ising antiferromagnet with competing first- and second-neighbor exchange interactions. For x≈45, the system undergoes a Néel transition at TN ≈7.4 K and a reentrant spin-glass transition at Tsg ≈3.0 K. From neutron scattering experiments we find that (i) the antiferromagnetic Bragg peak persists down to 1.2 K, well below Tsg; and (ii) the diffuse scattering becomes temperature independent below about 6.0 K, with the correlation length frozen at about 2.8 lattice spacings. These results suggest that long-range antiferromagnetic order and spin-glass-like short-range order coexist. Such a behavior is predicted by the infinite-range model for spin glasses with strong uniaxial anisotropy.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.335080
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