The Dy–Ni–Si system as a representative of the rare earth–Ni–Si family: Its isothermal section and new rare-earth nickel silicides

Yuan, Fang; Mozharivskyj, Yurij; Морозкин, А.В.; Knotko, A.V.; Yapaskurt, V.O.; Pani, M.; Provino, A.; Manfrinetti, P.

doi:10.1016/j.jssc.2014.07.030

Cited by 27 publications

(11 citation statements)

References 29 publications

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“…Mixed occupation on all the sites occupied by the smaller atoms (Mg and Ag), except the site in 2a, was refined for Ce 3 Ag 4.7 Mg 11.3 [27], but the refinement clearly showed preferential occupation of site 6g by Ag atoms. Ordered structures were observed for the isotypic silicides R 3 Ni 12 Si 4 (R = Ho, Er, Tm) [28], where the positions of the p-and d-elements are interchanged with respect to the structure of Gd 3 Ru 4 Al 12 . Contrary to the structure reported for ScNi 11 Si 4 , both sites located on the c-axis, 2a and 2b, were found to be fully occupied.…”

Section: Resultsmentioning

confidence: 98%

Crystal structure of the ternary compound Sc3Cu7.5Al7.5

Klymentiy¹,

SEMUSO²,

Pukas³

et al. 2016

Chem. Met. Alloys

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The crystal structure of a new ternary aluminide, Sc 3 Cu 7.5 Al 7.5 , was solved by direct methods from X-ray powder diffraction data. It crystallizes with a partly disordered occupation variant of the structure type Sc 3 Ni 11 Ge 4 (Pearson symbol hP38, space group P6 3 /mmc, a = 8.4848(1), c = 8.8593(1) Å). The hexagonal unit cell of Sc 3 Cu 7.5 Al 7.5 contains 36 atoms, distributed over seven crystallographic sites (Sc atoms: one site, statistical mixtures of Cu and Al atoms: four sites, Cu atoms alone: two partly occupied sites). The main feature of the structure is the clustering of the Sc atoms into triangles with relatively short interatomic distances (δ Sc-Sc = 3.446(2) Å). The coordination polyhedra of the Sc atoms are pentagonal prisms (with seven capping atoms) and those of the sites occupied by atoms of the statistical mixtures icosahedra, and those of the remaining Cu atoms trigonal prisms (with three capping atoms) or trigonal antiprisms.

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Section: Resultsmentioning

confidence: 98%

Crystal structure of the ternary compound Sc3Cu7.5Al7.5

Klymentiy¹,

SEMUSO²,

Pukas³

et al. 2016

Chem. Met. Alloys

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“…A check with the Pearson database [1] revealed isotypism with the Eu 2 Ni 8 Si 3 type structure [44] with the Pt atoms occupying the two crystallographically independent Si sites and the Al atoms occupying the three independent Ni sites, respectively. The formation of antitypic aluminum compounds in comparison to the ternary nickel silicides has also been observed e. g. in equiatomic CaPtAl [6] ( anti ‐TiNiSi type [7] ), orthorhombic CePt 3 Al 5 [47] ( anti ‐YNi 5 Si 3 type [48] ) or the anti ‐Gd 3 Ru 4 Al 12 type [49] silicides RE 3 Ni 12 Si 4 ( RE =Y, Gd−Tm) [50] …”

Section: Resultsmentioning

confidence: 99%

Structural, Physical, Theoretical and Spectroscopic Investigations of Mixed‐Valent Eu₂Ni₈Si₃ and Its Structural Anti‐Type Sr₂Pt₃Al₈

et al. 2021

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Eu2Ni8Si3 and its anti‐type representative Sr2Pt3Al8 were synthesized from the elements. They crystallize in the tetragonal crystal system with space group P42/nmc and with lattice parameters of a=997.9(1) and c=747.6(1) pm (Eu2Ni8Si3) as well as a=1082.9(2) and c=823.3(2) pm (Sr2Pt3Al8). Both compounds were investigated via single crystal X‐ray diffraction, indicating slight Si/Ni mixing for the silicide. Sr2Pt3Al8 exhibits a temperature independent magnetic susceptibility, suggesting superimposed dia‐ and Pauli‐paramagnetic contributions. The independent Al and Pt sites of the platinide were further characterized by 27Al and 195Pt solid‐state NMR spectroscopy, which were assigned with the help of electronic structure calculations. ICOHP calculations and Bader charges were used to analyze the bonding situation. Eu2Ni8Si3 in contrast is paramagnetic with a ferromagnetic transition at TC=46.9(2) K and exhibits an effective magnetic moment of μeff=6.61(1) μB per Eu atom. The latter is in line with an intermediate valence that was further proven by 151Eu Mößbauer spectroscopic investigations. At 300 K, the refined Eu2+/Eu3+ ratios are 60 %/40 %, at 78 K 62 % and 38 % (Eu2+/Eu3+) are observed, being in line with the ratio deduced from the magnetic susceptibility. Finally, at 6 K a ratio of 68 % Eu2+ and 32 % Eu3+ was observed. Below the Curie temperature, the Eu2+ signal shows a full magnetic hyperfine splitting, with an internal magnetic field value of B0=28.4 T.

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“…The refined positional coordinates and displacement parameters are the following: Lu1 in 6g 0.23765(7) 0 1/4, Ueq = 0.0085(2) Å 2 ; Lu2 in 4d 1/3 2/3 0, Ueq = 0.0083(2) Å 2 ; Ni in 2b 0 0 0, Ueq = 0.04(2) Å 2 , occ. 0.090 (19); Si in 6g 0.6023(5) 0 1/4, Ueq = 0.0081(9) Å 2 . The nickel content was confirmed by EDX analysis.…”

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confidence: 99%

“…Із систем R-Ni-Si, де R -рідкісноземельний метал ітрієвої підгрупи, в повному концентраційному інтервалі досліджено системи лише з Y при 600°С [18], Gd при 600°С [18] та Dy при 800°С [19]. Автори цих праць також з'ясували, що на основі бінарних сполук зі структурою типу Mn5Si3 існують тверді розчини включення нікелю до 5 та 8 ат.…”

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Single crystal investigation of the Lu5Ni0.09Si3 phase

Gągor¹,

Belan²,

Manyako³

et al. 2019

Visnyk Lviv Univ. Ser. Chem.

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Рентгенівським дифракційним методом монокристала проведено дослідження структури фази Lu5Ni0,09Si3. Масив експериментальних даних отримано на дифрактометрі KM4 CCD. Кристалічну структуру уточнено за допомогою програми SHELXL-97. Наявність нікелю в монокристалі підтверджено EDX аналізом. Структура фази Lu5Ni0,09Si3 належить до типу Hf5CuSn3 (структура включення до типу Mn5Si3): просторова група P63/mcm; a = 8,1823(5) Å; c = 6,1151(7) Å; V = 354,56(5) Å 3 ; Z = 2; R = 0,0232; wR = 0,0360 для 163 незалежних рефлексів з I > 2σ(I). З'ясовано, що в системі Lu-Ni-Si при 600°С, ймовірно, існує твердий розчин включення Lu5NixSi3 незначної протяжності.Ключові слова: кристалічна структура, Лютецій, Нікель, Силіцій.

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The Dy–Ni–Si system as a representative of the rare earth–Ni–Si family: Its isothermal section and new rare-earth nickel silicides

Cited by 27 publications

References 29 publications

Crystal structure of the ternary compound Sc3Cu7.5Al7.5

Crystal structure of the ternary compound Sc3Cu7.5Al7.5

Structural, Physical, Theoretical and Spectroscopic Investigations of Mixed‐Valent Eu₂Ni₈Si₃ and Its Structural Anti‐Type Sr₂Pt₃Al₈

Single crystal investigation of the Lu5Ni0.09Si3 phase

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The Dy–Ni–Si system as a representative of the rare earth–Ni–Si family: Its isothermal section and new rare-earth nickel silicides

Cited by 27 publications

References 29 publications

Crystal structure of the ternary compound Sc3Cu7.5Al7.5

Crystal structure of the ternary compound Sc3Cu7.5Al7.5

Structural, Physical, Theoretical and Spectroscopic Investigations of Mixed‐Valent Eu2Ni8Si3 and Its Structural Anti‐Type Sr2Pt3Al8

Single crystal investigation of the Lu5Ni0.09Si3 phase

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Structural, Physical, Theoretical and Spectroscopic Investigations of Mixed‐Valent Eu₂Ni₈Si₃ and Its Structural Anti‐Type Sr₂Pt₃Al₈