420
M. Reissner
Fig. 8.38 Temperature dependence of the reciprocal susceptibility for several typical samples of
Y(Fe x Al 1−x ) 2 [123]. © IOP Publishing. Reproduced with permission. All rights reserved
Fig. 8.39 Concentration dependence of the saturation moment M s = N μ for Y(Fe x Al 1−x ) 2 at 4.2
K. Inset: concentration dependence of Weiss temperature θ [123]. © IOP Publishing. Reproduced
with permission. All rights reserved
also some evidence of weak antiferromagnetic correlations. From the nuclear diffuse
scattering indication of a weak anticlustering of Fe on Al sites is found [142]. The
low-field magnetization against temperature curves show maxima (T M ) for x ≤ 0.8,
which broadens with increasing x.
Zero-field
57 Fe Mössbauer spectra at room temperature are strongly asymmetric
(Fig. 8.40). They can be fitted by a superposition of quadrupole split spectra. The
change of asymmetry with x points to a strong influence of the local surrounding on
the electrostatic hyperfine interactions. At low temperature magnetic hyperfine split-
M. Reissner
Fig. 8.38 Temperature dependence of the reciprocal susceptibility for several typical samples of
Y(Fe x Al 1−x ) 2 [123]. © IOP Publishing. Reproduced with permission. All rights reserved
Fig. 8.39 Concentration dependence of the saturation moment M s = N μ for Y(Fe x Al 1−x ) 2 at 4.2
K. Inset: concentration dependence of Weiss temperature θ [123]. © IOP Publishing. Reproduced
with permission. All rights reserved
also some evidence of weak antiferromagnetic correlations. From the nuclear diffuse
scattering indication of a weak anticlustering of Fe on Al sites is found [142]. The
low-field magnetization against temperature curves show maxima (T M ) for x ≤ 0.8,
which broadens with increasing x.
Zero-field
57 Fe Mössbauer spectra at room temperature are strongly asymmetric
(Fig. 8.40). They can be fitted by a superposition of quadrupole split spectra. The
change of asymmetry with x points to a strong influence of the local surrounding on
the electrostatic hyperfine interactions. At low temperature magnetic hyperfine split-