ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
In reentrant spin glasses, small-angle neutron scattering measurements performed at low temperature in an applied field show a magnetic structure, i.e., a peak of the scattering I(q) at a finite qmax value. This structure has been studied as a function of applied field, cooling conditions, and sample geometry. The qmax value is found proportional to (Hint)1/2 where Hint is the internal field. In FeMnPBAl, the structure is insensitive to the field applied during the cooling process Hcool whereas in NiMn qmax increases with Hcool. This difference between the two systems is reminiscent of that observed in magnetization measurements which show that the memory effects induced by field cooling are stable in NiMn and unstable in FeMnPBAl.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.340553
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