The 500 °C Isothermal Section of the Al-Co-Nd Ternary System

Riani, Paola; Freccero, Riccardo; Sufryd, Katarzyna; Arrighi, Laura; Cacciamani, G.

doi:10.1007/s11669-020-00789-2

Cited by 11 publications

(6 citation statements)

References 47 publications

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“…Ternary alloys of Al-T-RE system, in which T is transition metal and RE is rare earth element have been paid more and more attention, because of their corrosion resistance, thermal stability, processability and excellent magnetic properties [1][2]. Due to the physical properties of these alloys are closely related to their chemical composition and the crystal morphologies of their constituent phases, it is important to determine the crystal structure of the alloys, while developing new materials.…”

Section: Introductionmentioning

confidence: 99%

Study on experimental synthesis and crystal structure of single-phase alloy Al1.5Cu3.5Nd

Tang,

Liang,

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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A alloy Al 1.5 Cu 3.5 Nd was synthesized by experimental methods. The phase composition of the alloy after high temperature annealing was observed and analyzed by scanning electron microscopy. It indicates that the alloy is a single-phase alloy with uniform chemical composition. Then, the powder X-ray diffraction patterns of the compound were collected for Rietveld refinement. The results of Rietveld refinement show that Al 1.5 Cu 3.5 Nd is isostructural with AlCu 4 Nd, crystallizes in hexagonal CaCu 5 -type structure, the space group is P6/mmm (No.191), its lattice constants a, c, unit-cell volume V, formula units per unit cell z, and calculated density ρ x are 5.1707(3) Å, 4.2011(2) Å, 97.27 Å 3 , 1, and 6.95 g/cm 3 , respectively. The residual factors are R p = 3.31%, R wp = 4.35% and R exp = 2.87%.

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Section: Introductionmentioning

confidence: 99%

Study on experimental synthesis and crystal structure of single-phase alloy Al1.5Cu3.5Nd

Tang,

Liang,

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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“…Of the latter, over 200 compounds were reported for different combinations of rare-earth and transition metals. Besides the respective aluminum compounds, ,− the isostructural indium, ,, cadmium ,,− and magnesium ,− representatives have also been reported. Of these, e.g., Eu 4 PdMg exhibits exceptional good magnetocaloric properties in a large temperature window .…”

Section: Introductionmentioning

confidence: 99%

Formation of the Sub-oxide Sc₄Au₂O_1–x and the Drastically Negative ²⁷Al NMR Shift in Sc₂Al

et al. 2023

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During attempts to synthesize Sc4AuAl in the cubic Gd4RhIn-type structure, the solid solution Sc2Au0.5Al0.5 in the PbCl2-type structure formed instead. Subsequently, the solid solution Sc2Au1–x Al x was investigated with respect to its existence range along with the structure types formed for different compositions with x = 0, 0.25, 0.5, 0.75, and 1. According to X-ray powder diffraction studies, Sc2Al and nominal Sc2Au0.25Al0.75 crystallized in the hexagonal Ni2In-type structure (P63/mmc), while Sc2Au0.5Al0.5, Sc2Au0.75Al0.25, and Sc2Au were found to crystallize in the orthorhombic PbCl2-type structure (Pnma). The crystal structures of Sc2Au and Sc2Au0.59(1)Al0.41(1) were refined from single-crystal data (Sc2Au: a = 648.0(1), b = 467.2(1), c = 835.2(2) pm, wR2 = 0.0382, 535 F 2 values, 25 variables; Sc2Au0.59(1)Al0.41(1): a = 632.48(5), b = 472.16(3), c = 848.67(6) pm, wR2 = 0.0484, 540 F 2 values, 21 variables). Contamination with air during the synthesis of Sc2Au led to the discovery of a compound adopting the cubic W4Co2C-type structure (stuffed cubic Ti2Ni type). Using Sc2O3 as a defined oxygen source led to samples with high amounts of Sc4Au2O1–x . All intermetallic compounds exhibited Pauli paramagnetic behavior in the investigated temperature range of 2.1 to 300 K, and no superconductivity was observed at low temperatures and low fields. Sc2Au and Sc2Al were investigated by 27Al and 45Sc solid-state NMR investigations. For Sc2Al, one signal was found in the 27Al NMR spectra in line with the crystal structure; however, an extremely negative resonance shift of δ = −673 ppm was observed. In both compounds, two Sc resonances were observed, in line with the proposed crystal structure. Finally, it was observed that the stability of Sc2Au in air is limited. This was investigated via thermal analysis and (temperature-dependent) powder X-ray diffraction. DFT calculations helped in assessing charge analysis, electronic properties, and chemical bonding.

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Section: Introductionmentioning

confidence: 99%

“…with the W 2 CoB 2 structure has been successfully synthesized. 19,21 So far, in this work particular attention has been paid to the synthesis and characterization of carbon-modified derivatives of hypothetical compounds La 2 Co 2 Al and Ce 2 Co 2 Al which could crystallize in an orthorhombic W 2 CoB 2 -type structure. In addition, for the well-known Pr 2 Co 2 Al and Nd 2 Co 2 Al ternaries, their interstitial carbon counterparts Pr 2 Co 2 AlC and Nd 2 Co 2 AlC were obtained.…”

Section: Introductionmentioning

confidence: 99%

Extending interstitial tetrelides into carbides: synthesis and crystal and electronic structures- of RE₂Co₂AlC (RE = La, Pr, Nd)

2023

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The 500 °C Isothermal Section of the Al-Co-Nd Ternary System

Cited by 11 publications

References 47 publications

Study on experimental synthesis and crystal structure of single-phase alloy Al1.5Cu3.5Nd

Study on experimental synthesis and crystal structure of single-phase alloy Al1.5Cu3.5Nd

Formation of the Sub-oxide Sc₄Au₂O_1–x and the Drastically Negative ²⁷Al NMR Shift in Sc₂Al

Extending interstitial tetrelides into carbides: synthesis and crystal and electronic structures- of RE₂Co₂AlC (RE = La, Pr, Nd)

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The 500 °C Isothermal Section of the Al-Co-Nd Ternary System

Cited by 11 publications

References 47 publications

Study on experimental synthesis and crystal structure of single-phase alloy Al1.5Cu3.5Nd

Study on experimental synthesis and crystal structure of single-phase alloy Al1.5Cu3.5Nd

Formation of the Sub-oxide Sc4Au2O1–x and the Drastically Negative 27Al NMR Shift in Sc2Al

Extending interstitial tetrelides into carbides: synthesis and crystal and electronic structures- of RE2Co2AlC (RE = La, Pr, Nd)

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Product

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About

Formation of the Sub-oxide Sc₄Au₂O_1–x and the Drastically Negative ²⁷Al NMR Shift in Sc₂Al

Extending interstitial tetrelides into carbides: synthesis and crystal and electronic structures- of RE₂Co₂AlC (RE = La, Pr, Nd)