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Localized 3 d magnetic moments polarize in palladium and platinum matrices the Pd 4d and Pt 5d conduction electrons in their neighbourhood. This leads to effective “giant magnetic moments” μgm. We have measured the magnetization M(x, B, T) of each ninePdFex andPtFex samples with 2ppm≤x≤260ppm at...
We have measured the 16 Hz susceptibility of the giant magnetic moments induced by Fe impurities in highly dilutedPdFex andPtFex samples with 2.5 ppm ≤ x ≤ 75 ppm in a wide temperature range, 30 μK≤ T ≤ 300 mK, and at static magnetic fields 0,01 mT≤ B ≤ 25 mT. We find spin glass freezing at...
A detailed study of the low-temperature magnetization M and specific heat C of CePd2In is reported. For B ≈ 0, M and C show maxima at TN≈ 1.25 K indicating an antiferromagnetic phase transition as observed previously. In a magnetic field B the transition seen in M is shifted to lower T while TN...
This article presents an experimental set-up to study the turbulent regime of free thermal convection in a Rayleigh-Bénard cell. Helium gas around 4 K is confined in a cell of aspect ratio 0.5. With a thermocouple technique we can measure temperature differences across the cell as low as 0.2 mK,...
The mean-field theory of the quadrupolar glass (QG) is presented using a microscopic approach. It is shown that the reaction-polarization effects caused by short-range spatial correlations are well distinguished from those of random-bond spin glasses. They control the QG concentration threshold...
A comparative analysis of experimental data on the orientational order parameter, heat capacity and Grüneisen parameter with those predicted by the mean-field microscopic theory given in the accompanying paper is carried out. The orientation-motion freezing mechanisms driven by the strain,...
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