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APS » Journals » Phys. Rev. Lett. » Volume 52 » Issue 17
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Phys. Rev. Lett. 52, 1504–1507 (1984)

In-Plane Density of Potassium Liquid and Liquid-Solid Transitions in Potassium Graphite Intercalation Compounds

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R. Nishitani*, Y. Uno, and H. Suematsu
Institute of Materials Science, University of Tsukuba, Sakuramura, Ibaraki 305, Japan

Y. Fujii
Faculty of Engineering Science, Osaka University, Toyonaka, Osaka 560, Japan

T. Matsushita
Photon Factory, National Laboratory for High Energy Physics, Oho-machi, Tsukuba, Ibaraki 305, Japan

Received 12 December 1983; published in the issue dated 23 April 1984

An x-ray-diffraction study of in-plane structures in K-graphite has revealed a remarkable chemical potential (μK) dependence of the in-plane density in pure stages 1 and 2, and some continuous nature of the stage-1 melting transition. A simultaneous growth of intralayer and interlayer correlations of K atoms in stage-1 liquid is observed as μK approaches the solidification poínt. This transition is weakly first order. A new stacking transition from αβ to αβγδ K layers in stage-1 solid is also reported.

© 1984 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.52.1504
DOI:
10.1103/PhysRevLett.52.1504
PACS:
64.70.Dr, 61.10.Fr, 61.25.-f, 64.70.Kb

*Present address: Research Institute for Iron, Steel and Other Metals, Tohoku University, Sendai 980, Japan.

 
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