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ANSTO Publications Online >
Journal Publications >
Journal Articles >
Please use this identifier to cite or link to this item:
http://apo.ansto.gov.au/dspace/handle/10238/3951
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| Title: | First-Order Phase Transition in a New CaCu5-Related Antimonide, CePt5Sb |
| Authors: | Salamakha, L Bauer, E Michor, H Hilscher, G Muller, H Svagera, R Sologub, O Rogl, P Hester, J Roisnel, T Giester, G Mudryi, S |
| Keywords: | X-ray Diffraction Neutron Diffraction Magnetism Rare Earth Antimonides Electric Conductivity |
| Issue Date: | 13-Sep-2011 |
| Publisher: | American Chemical Society |
| Citation: | Salamakha, L., Bauer, E., Michor, H., Hilscher, G., Muller, H., Svagera, R., Sologub, O., Rogl, P., Hester, J., Roisnel, T., Giester, G., Mudryi, S. (2011). First-Order Phase Transition in a New CaCu(5)-Related Antimonide, CePt(5)Sb. Chemistry of Materials, 23(17), 4016-4024. |
| Abstract: | A new CaCu(5) related antimonide, CePt(5)Sb, has been identified. This ternary compound undergoes a structural phase transition at about 80 K according to room- and low-temperature X-ray and neutron diffraction, and measurements of electrical resistivity, specific heat and magnetism. The room temperature phase forms a new rhombohedral structure, space group R (3) over bar, a = 0.53535(2) nm, c = 3.10814(12) nm and consists of alternating blocks of CaCu(5)- and MnCu(2)Al-type fragments that extend along the c-axis. The low-temperature phase is monoclinic, space group Cm, a = 0.91821(5) nm, b = 0.53696(1) nm, c = 1.08064(6) nm, beta = 107.40(1)degrees. The unit cells of both structures (orthohexagonal and monoclinic) are geometrically related via the transformation matrix a' = -b', b' = -a, c'=1/3b - 1/3c. Bulk properties elucidate the phase transition being of first-order and evidence Kondo interactions at low temperatures. © 2011, American Chemical Society |
| URI: | http://dx.doi.org/10.1021/cm201584f http://apo.ansto.gov.au/dspace/handle/10238/3951 |
| ISSN: | 0897-4756 |
| Appears in Collections: | Journal Articles |
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