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Magnetic correlations in an amorphous Gd-Al spin glass (1987)

Spano, M. L. ; Rhyne, J. J. ; Pickart, S. J. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 61 (1987), S. 3639-3641

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: Small-angle neutron scattering (SANS) as well as magnetization measurements have been made on a sputtered film of Gd43Al57. The low field susceptibility peaks at a freezing temperature Tf of 33 K. This agrees well with the SANS data, which shows a peak in the intensity at this temperature for the lowest Q's measured. The SANS line shapes are unusual in that they can be fitted with a Lorentzian plus Lorentzian-squared cross section with dissimilar correlation lengths. The Lorentzian correlation length peaks near 35 K at a value of ∼14 A(ring), while the Lorentzian-squared correlation length exhibits a large, essentially resolution-limited, value up to temperatures several times Tf. These results are consistent with the coexistence of finite static spin clusters with relatively long-range ferromagnetic correlations.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.338698

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