Abstract
The magnetization measurements were carried out for polycrystalline Au4V in magnetic fields up to 130 kOe. The spontaneous magnetic moment ps was determined to be 0.255 μB/V at 4 K by high field magnetization. The magnetization process was analyzed on the basis of Takahashi’s spin fluctuation theory for weak itinerant electron ferromagnets. The characteristic parameters of the spin fluctuation were estimated to be TA = 1.3 × 103 K and T0 = 2.3 × 103 K using the data for 110–130 kOe.
Fig. 4 Temperature dependence of the reduced spontaneous magnetic moment:
ps(
T)
2/
ps(4 K)
2 vs.
T4/3 (a) and
ps(
T)
2/
ps(4 K)
2 vs.
T2 (b). Here,
ps(
T) and
ps(4 K) were evaluated from
M2 vs.
H/
M for 10 ≤
H ≤ 30 kOe. The broken line is a least-squares fit to the data for 4 ≤
T ≤ 20 K.
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