New rare earth-rich aluminides and indides with cubic Gd4RhIn-type structure

Tappe, Frank; Schwickert, Christian; Linsinger, Stefan; Pöttgen, Rainer

doi:10.1007/s00706-011-0622-3

Cited by 50 publications

(36 citation statements)

References 22 publications

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“…Thus, our results support the view that even if all three site symmetries occupied by Ce in this structure, see [7], should participate in the magnetic ordering then the Ce 3+ ions would still have to be in a strongly hybridized state to be concomitant to such a tiny fraction of the full available magnetic entropy of the 4f spin system. Such a hybridized Ce 3+ state in Ce 4 RuAl was in fact alluded to in the observed anomalous contraction of Ce 4 RuAl lattice parameter values in the R 4 RuAl series [7]. Figure 3 shows the low temperature part of C P /T vs. T for Ce 4 RuAl in various applied magnetic elds.…”

Section: Methodssupporting

confidence: 83%

“…It is probable that magnetocrystaline anisotropy plays an important role here. The obtained magnetic moment value is lower than the obtained value by Tappe et al [7]. Figure 2 shows the temperature dependence of the heat capacity C P (T ) of Ce 4 RuAl in the temperature range 0.5300 K in zero magnetic eld.…”

Section: Methodscontrasting

confidence: 52%

“…This µ eff value is higher than the obtained value by Tappe et al [7]. According to Tappe et al µ eff value is 1.74 µ B /Ce and the θ P = −34.1 K at applied eld B = 1 T. At low temperatures, the inverse magnetic susceptibility χ −1 (T ) considerably deviates from CurieWeiss behaviour, which could be attributed to the crystallineelectric-eld (CEF) eect.…”

Section: Methodscontrasting

confidence: 50%

“…To date, exploratory studies on Ce 4 RuAl have been reported at a conference [6] and by Tappe et al [7]. In the present paper, we report the physical properties of the CeRuAl system, namely Ce 4 RuAl.…”

Section: Introductionmentioning

confidence: 79%

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Magnetic and Thermodynamic Properties of Ce₄RuAl

et al. 2015

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The results of magnetic susceptibility and heat capacity measurements are reported for the Ce4RuAl compound above room temperature to low temperature range (400 K to 0.34 K) and in the magnetic eld up to 7 T. The magnetic susceptibility χ(T ) exhibits a distinct anomaly at 0.95 K which most probably suggests a paramagnetic to antiferromagnetic phase transition. The magnetic susceptibility obeys the CurieWeiss law in the region 100400 K and revealed an eective magnetic moment µ eff = 2.18 µB/Ce which is less than the value for free Ce 3+ (µ eff = 2.54 µB). The paramagnetic Weiss temperature indicates net antiferromagnetic correlations. In the specic heat a peak at 1.3 K supports the bulk nature of the phase transition observed in χ(T ). The Sommereld coecient is moderately enhanced in the paramagnetic phase, and suggests fc correlations among the electrons prior to magnetic ordering. The obtained Sommereld coecient γ behavior is consistent with the Anderson model-based theoretical predictions.

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Section: Methodssupporting

confidence: 83%

Section: Methodscontrasting

confidence: 52%

Section: Methodscontrasting

confidence: 50%

Section: Introductionmentioning

confidence: 79%

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Magnetic and Thermodynamic Properties of Ce₄RuAl

et al. 2015

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“…It was found that the XRD pattern of Gd4RhIn was very similar to that of τ1. Tappe et al [28] reported several rare earth containing compounds with this prototype. Therefore, the crystallographic data of Gd4RhIn was taken as the starting value for the Rietveld structural refinement of τ1 in the present work.…”

Section: Isothermal Section Based On Diffusion Couples and Key Samplementioning

confidence: 97%

Experimental Study of the Mg-Ni-Y System at 673 K Using Diffusion Couples and Key Alloys

Mezbahul-Islam

Kevorkov

Medraj

2015

Metals

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Three solid-solid and two solid-liquid diffusion couples together with 32 key samples were used to construct the isothermal section of the Mg-Ni-Y system at 673 K. The present investigation revealed 12 ternary intermetallic compounds. Crystal structures of two ternary compounds τ1 (Gd4RhIn prototype with lattice parameter of a = 1.3666 nm) and τ2 (Mo2FeB2 prototype with lattice parameters of a = 0.7395 nm and c = 0.3736 nm) were determined. The phase relations and ternary solubility of the binary and ternary compounds at 673 K were determined using scanning electron microscopy (SEM), wave dispersive X-ray spectrometer (WDS) and X-ray diffraction (XRD) analysis.

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