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Abstract
The combination of experimental and theoretical investigation of two new Pt-rich intermetallic compounds: APt8P2 (A = Ca and La) is presented, including solid-state synthesis, crystal structure determination, physical properties characterization and chemical bonding analysis. APt8P2 was obtained through the high-temperature pellet synthesis. According to both single crystal and powder X-ray diffraction results, APt8P2 crystallize in the monoclinic DyPt8P2-type structure with space group I2/m (S.G. 12). Crystal structure of APt8P2 can be considered as intercalating multiple Pt layers into APt2P2. Magnetic susceptibility measurement indicates diamagnetism of both compounds. The specific heat down to 1.8 K shows no evidence for bulk superconductivity in either CaPt8P2 and LaPt8P2. Electronic structure calculations match well with the observed structural stability and metallic behavior. The following Crystal Orbital Hamiltonian Population (-COHP) calculations suggest that the difference of Pt-Pt antibonding interaction could be the key factor that results in the shrinkage of c axis in APt8P2.
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Authors (4)
-
Xin Gui
-
Weiwei Xie
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
JOURNAL OF ALLOYS AND COMPOUNDS
no. 798,
pages 53 - 58,
ISSN: 0925-8388 - Language:
- English
- Publication year:
- 2019
- Bibliographic description:
- Gui X., Sobczak Z., Klimczuk T., Xie W.: Pt-rich intermetallic APt8P2 (A = Ca and La)// JOURNAL OF ALLOYS AND COMPOUNDS. -Vol. 798, (2019), s.53-58
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.jallcom.2019.05.239
- Verified by:
- Gdańsk University of Technology
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