The crystal structures of two ternary Mx(Ga, As)y phases (M ≡ Rh, Pd) with Rh5Ge3- and Cr12P7-type derivative structures
Publication type: Journal Article
Publication date: 1991-08-01
General Engineering
Abstract
The pseudobinary compounds Mx(Ga,As)y were synthesized in the RhGaAs and PdGaAs systems by reacting the constituent elements. The X-ray structures studied using three-dimensional single-crystal counter data were refined down to R values of 0.060 (space group Pbam, 376 independent reflections) and 0.034 (space group P63/m, 607 independent reflections) leading to the formulae Rh5Ga2As and Pd12Ga4.5As2.5 respectively. The structure of Rh5Ga2As is derived from the Rh5Ge3 type with ordered distribution of gallium and arsenic atoms while the Pd12Ga4.5As2.5 structure is of Cr12P7 type with a fully disordered occupancy for the metalloid atoms. Strong correlation between the RhGaAs ternaries and RhGe binaries as well as structural relationship between MnP-, Co2P- and Rh5Ge3-type structures are evidenced. Stability of the M5X3 and M12X7 phases (M ≡ Rh, Pd) in terms of dimensional and electronic effects is discussed. Finally, the importance of phase diagrams for rationalizing M-GaAs reactions is emphasized.
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Citations from 2024:
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Députier S., Pivan J., Guerin R. The crystal structures of two ternary Mx(Ga, As)y phases (M ≡ Rh, Pd) with Rh5Ge3- and Cr12P7-type derivative structures // Journal of the Less Common Metals. 1991. Vol. 171. No. 2. pp. 357-368.
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Députier S., Pivan J., Guerin R. The crystal structures of two ternary Mx(Ga, As)y phases (M ≡ Rh, Pd) with Rh5Ge3- and Cr12P7-type derivative structures // Journal of the Less Common Metals. 1991. Vol. 171. No. 2. pp. 357-368.
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TY - JOUR
DO - 10.1016/0022-5088(91)90159-2
UR - https://doi.org/10.1016/0022-5088(91)90159-2
TI - The crystal structures of two ternary Mx(Ga, As)y phases (M ≡ Rh, Pd) with Rh5Ge3- and Cr12P7-type derivative structures
T2 - Journal of the Less Common Metals
AU - Députier, Stephanie
AU - Pivan, J.-Y.
AU - Guerin, R.
PY - 1991
DA - 1991/08/01
PB - Elsevier
SP - 357-368
IS - 2
VL - 171
SN - 0022-5088
ER -
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@article{1991_Députier,
author = {Stephanie Députier and J.-Y. Pivan and R. Guerin},
title = {The crystal structures of two ternary Mx(Ga, As)y phases (M ≡ Rh, Pd) with Rh5Ge3- and Cr12P7-type derivative structures},
journal = {Journal of the Less Common Metals},
year = {1991},
volume = {171},
publisher = {Elsevier},
month = {aug},
url = {https://doi.org/10.1016/0022-5088(91)90159-2},
number = {2},
pages = {357--368},
doi = {10.1016/0022-5088(91)90159-2}
}
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MLA
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Députier, Stephanie, et al. “The crystal structures of two ternary Mx(Ga, As)y phases (M ≡ Rh, Pd) with Rh5Ge3- and Cr12P7-type derivative structures.” Journal of the Less Common Metals, vol. 171, no. 2, Aug. 1991, pp. 357-368. https://doi.org/10.1016/0022-5088(91)90159-2.