Magnetic susceptibility of some Au-V alloys

Dam, J.E. Van; Gubbens, P.C.M.; Berg, Gérard J. van den

doi:10.1016/0031-8914(72)90058-4

Cited by 28 publications

(4 citation statements)

References 60 publications

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“…A minor deviation from the Curie-Weiss law at very low temperatures, similar to the one found for AuV in Ref. 34, can be observed. The corresponding values of b 0 , b 1 , γ, M , δ are given in Table IV.…”

Section: A Cufesupporting

confidence: 83%

On the Kondo Problem and Thermodynamics of Dilute Magnetic Alloys

Maćkowiak¹

2008

Open Syst. Inf. Dyn.

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An argument is given showing that Coulomb attraction between conduction electrons and impurity ions in a dilute magnetic alloy (DMA) can be disregarded, provided the system's inverse temperature β is replaced by an effective inverse temperature t < β. This replacement allows to remove the singularity in Kondo's expression for DMA impurity resistivity and extend his theory to 0 K. The extended Kondo formula agrees with experimental data on resistivity of CuFe in the range of low temperatures and in the neighbourhood of the resistivity minimum.Using an asymptotic solution of the thermodynamics of a dilute s-d system at inverse temperature t, the impurity thermodynamic functions are derived and shown to provide good agreement with experimental data on CuFe, CuCr and (LaCe)Al 2 alloys in the low-temperature range. The magnitude of these functions agrees with experiment and does not require rescaling as in previous s-d theories. Nonlinear dependence of CuFe heat capacity on impurity concentration has been accounted for the first time.

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Section: A Cufesupporting

confidence: 83%

On the Kondo Problem and Thermodynamics of Dilute Magnetic Alloys

Maćkowiak¹

2008

Open Syst. Inf. Dyn.

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“…The ranges of values observed for Ax(O)/c are indicated on the figure, where (a), (b) and (c) refer to the classes defined in the text. The chain lines for the class (a) and (b) systems indicate the qualitative behaviours observed for AlMn (class (a) )(Hedgcock and Li 1970) and AuV (class (b) )(Van Dam and Gubbens 1971). I n both cases the susceptibility variation can be described by…”

mentioning

confidence: 63%

“…If we consider now the systems of class ( b ) (table l ( b ) ) , which are reported in decreasing order relative to 1 e,], we see that the zero temperature values of the susceptibility, Ax(O)/c (extrapolated by assuming a C-W law'valid down to T = 0) increase with continuity following from the values of the systems of class ( a ) reported in table l ( a ) : this suggests a continuity between the two classes, which is also evidenced by the fact that a temperature dependence of the susceptibility sets (Hedgcock and Li 1970) and AuV (class (b) ) (Van Dam and Gubbens 1971). I n both cases the susceptibility variation can be described by…”

Section: Rixxutomentioning

confidence: 79%

Formation of localized moments in metals: experimental bulk properties

Rizzuto

1974

Rep. Prog. Phys.

212

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This review presents systematically most of the experimental data which have been obtained from measurements of bulk properties of alloys and intermetallic compounds containing atoms of transition metals, rare earths or actinides which can be considered as non-interacting with each other. Criteria for the observation of effects due to non-interacting atoms are given. Data are reported from measurements of magnetic properties, electrical resistivity, specific heat, superconductivity, thermoelectric power, thermal conductivity, thermal expansion and compressibility, De Haas-van Alphen and Hall effects and optical properties. Systematic trends in experimental behaviour can be observed in many of these data, and using this observation experimental parameters are defined which are used to classify the data before attempting a comparison with theories.

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“…In the case of the VAu system, the predominant interaction is the Kondo effect. No spin-glass ordering has been observed over the whole concentration range [142]. The Kondo effect is caused by the antiferromagnetic coupling between the conduction electrons and the local electronic magnetic moment of an isolated ion and is usually studied in systems at magnetic-ion concentrations below 50 ppm.…”

Section: C R M N F E C O N Imentioning

confidence: 99%

Magnetic nanostructures: radioactive probes and recent developments

Prandolini

2006

Rep. Prog. Phys.

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The miniaturization of magnetic sensors and storage devices down to the nano-scale leads to drastic changes in magnetic phenomena compared with the same devices with a larger size. Excited-nuclear-probe (radioactive probe) techniques are ideal for investigating these new magnetic nanostructures. By observing the magnetic hyperfine fields (and in some cases the electric-field-gradients (EFGs)) at the nuclei of radioactive probes, microscopic information about the magnetic environment of the probes is acquired. The magnetic hyperfine field is particularly sensitive to the s-spin polarization of the conduction electrons and to the orbital magnetic moment of the probe atom. Three methods of inserting radioactive probes into magnetic nanostructures are presented; neutron activation, recoil implantation and 'soft-landing', followed by descriptions of their application to selected examples. In some cases, these methods offer the simultaneous creation and observation of new magnetic materials at the atomic scale. This review focuses firstly on the induced magnetism in noble-metal spacer layers between either ferromagnetic (FM) or FM/antiferromagnetic (AFM) layers in a trilayer structure. Using the method of low-temperature nuclear orientation, the s-spin polarization of noble-metal probes was measured and was found to be very sensitive to the magnetic properties at both the FM and AFM interfaces. Secondly, the recoil implantation of radioactive Fe probes into rare-earth hosts and d-band alloys and subsequent measurement using time-differential perturbed angular distribution offer the possibility of controlling the chemical composition and number of nearest-neighbours. This method was used to prepare local 3d-magnetic clusters in a non-magnetic matrix and to observe their magnetic behaviour. Finally, non-magnetic radioactive probes were 'soft-landed' onto Ni surfaces and extremely lattice-expanded ultrathin Ni films. By measuring the magnetic hyperfine fields and EFGs at 111 Cd probes using time-differential perturbed angular correlation (TDPAC), it was possible to distinguish the interaction of Cd probes located at various surface This article was invited by Professor S Washburn.

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Magnetic susceptibility of some Au-V alloys

Cited by 28 publications

References 60 publications

On the Kondo Problem and Thermodynamics of Dilute Magnetic Alloys

On the Kondo Problem and Thermodynamics of Dilute Magnetic Alloys

Formation of localized moments in metals: experimental bulk properties

Magnetic nanostructures: radioactive probes and recent developments

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