ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
An extensive analysis of ac magnetic susceptibility measurements of single-crystal gadolinium is presented. The demagnetization-corrected c-axis data are analyzed on the basis of a power law of the form χc=At−γ where t is the reduced temperature above Tc. Our results yield effective values of Tc=293.57 K and γ=1.327. The basal plane susceptibility is expressed as a parametric equation in terms of the c-axis susceptibility χ−1ab=B'+C'χ−y/γc. The exponent y, which is related to the critical exponent associated with the specific heat α as y=1−α, is determined by our analysis to be y=1.01(2). This gives a temperature scale associated with the anisotropy as tanis=2.0×10−3. These results are interpreted in the context of the effects of dipolar interactions in the critical region.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.358259
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