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A High-pressure and High-temperature Synthesis of Platinum Carbide by Shigeaki Ono; Takumi Kikegawa; Yasuo Ohishi is a Physics and Astronomy article available to read on EtoBox.

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High-pressure synthesis is a powerful method for the preparation of novel materials with high elastic moduli and hardness. Additionally, such materials may exhibit interesting thermal, optoelectronic, semiconducting, magnetic, or superconducting properties. We report on the new high-pressure, high-temperature synthesis of platinum carbide. The experiments were performed in a laser-heated diamond anvil cell and data were collected using the synchrotron X-ray diffraction method at pressures O75 GPa at high-temperatures. The new platinum carbide has a rock-salt type structure, with space group Fm3m and cubic symmetry. It was confirmed to remain stable to at least 120 GPa. This structure is the same as that of other metal carbides reported in previous studies. After decompression, the new high-pressure phase was recoverable at ambient pressure. The Birch-Murnaghan equation of state for this new phase was determined from the experimental unit cell parameters, with K 0 Z 301 (G15) GPa, and K 0 0 Z5.2 (G0.4).

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Author

Shigeaki Ono; Takumi Kikegawa; Yasuo Ohishi

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0038-1098)

Published

2005

Language

EN

Field

Physics and Astronomy (Physical Sciences)