The crystal structure of Cr23C6

Bowman, A. L.; Arnold, G.; Storms, Edmund; Nereson, N. G.

doi:10.1107/s0567740872007526

Cited by 160 publications

(53 citation statements)

References 1 publication

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“…They are described from UGP whose names are UOA [8] and UOA [12] (UOA means octahedral unit of antiprisms and the number between square brackets refers to the vacant anionic cavity located at the center of the UGP; 8 refers to a cube, 12 refers to a cuboctahedron). For the sake of clarity, structures have been classified as a function of their type of stacking: compact, semicompact, and noncompact.…”

Section: Introductionmentioning

confidence: 99%

Simplified Description of Complex Structures from Stackings of UGP

Maguer

Courbion

1997

Journal of Solid State Chemistry

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Section: Introductionmentioning

confidence: 99%

Simplified Description of Complex Structures from Stackings of UGP

Maguer

Courbion

1997

Journal of Solid State Chemistry

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“…Thus, the a-Fe grains are first nucleated in the amorphous matrix, leading to depletion of Fe in the matrix. At higher temperature, the driving force is sufficient to form the complex (C,B) 6 Fe 23 phase which contains around 116 atoms with a large lattice parameter of 10.686 Å [8]. It is interesting to note that this structure contains features of the metastable icosahedral structure [9].…”

Section: Resultsmentioning

confidence: 99%

Enhancement of soft magnetic properties by nanocrystallization in modified cast iron

Bali

Fleury

Lim

2005

Science and Technology of Advanced Materials

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“…Er 3 Pd 20P 6 adopts the Cr 23C 6 -type structure (Pearson symbol cF116) [1], which is built up of fragments of columnsofcuboctahedra (figure, top), two tetragonal antiprisms, and cubes (figure, middle). The Eratoms substitute for the transition metals in sites 4 a and 8 c .The Patoms have tetragonal antiprismatic coordination (figure, bottom).…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of erbium palladium phosphor (3:20:6), Er3Pd20P6

Zelinska¹,

Pivan²,

Oryshchyn³

et al. 2006

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialErbium, red phosphorus, and palladium were of 99.99 wt.-% purity. Amixture of the starting components with nominal composition Er 3 Pd 20 P 6 was pressed into asmall pellet (1 g) and melted in an arc furnace under aTi/Zr-gettered argon atmosphere at normal pressure. The alloy was heat-treated at 1070 Kfor 20 dinevacuated fused silica ampules, followed by quenching in cold water. After the sample was crushed, bar-likeair-stable single crystals with metallic luster were extracted and were for the structure determination. Energy-dispersive analysis of several crystals in a scanning electron microscope confirmed the presence of erbium, palladium,and phosphorus as the only components in atomic percentages of Er:Pd:P=11:68:21 (with estimated standard deviations of 2%). DiscussionEr 3 Pd 20P 6 adopts the Cr 23C 6 -type structure (Pearson symbol cF116) [1], which is built up of fragments of columnsofcuboctahedra ( figure, top), two tetragonal antiprisms, and cubes (figure, middle). The Eratoms substitute for the transition metals in sites 4 a and 8 c .The Patoms have tetragonal antiprismatic coordination ( figure, bottom). The shortesti nteratomic distance found ( d (Pd1-P)=235.6(2) pm) is by <5%smaller than the sumof atomic radii. Because of the low rare-earth content, the Eratoms remain isolated, and interatomic distances to them are larger than the sum of atomic radii. The greatest contraction (9.4 %) occurs for the Er2-Pd2 distance of 281.95(5)p m, indicating that the bonding between Erand Pdatoms is probably stronger than that between Pdand P,orErand P.Er 3 Pd 20 P 6 is paramagnetic and its susceptibility followsthe Curie-Weiss law.

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The crystal structure of Cr23C6

Cited by 160 publications

References 1 publication

Simplified Description of Complex Structures from Stackings of UGP

Simplified Description of Complex Structures from Stackings of UGP

Enhancement of soft magnetic properties by nanocrystallization in modified cast iron

Crystal structure of erbium palladium phosphor (3:20:6), Er3Pd20P6

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