Binary and ternary alkali graphite intercalation compounds: in-situ x-study of elastic and electrostatic effects on staging
Technical Report
·
OSTI ID:5531093
We have studied stage transformations of binary potassium-graphite intercalation compounds by in-situ x-ray (00l) scans. In the transition region of stages one and two both stages coexist and all Bragg reflections exhibit resolution limited widths. The characteristics of the stage transformation are identical in intercalated HOPG and single crystals. This implies that the stage transformation is a direct process with no need of forming intermediate structures, favoring electrostatic interaction as the dominant stabilizer for pure stage donor compounds. We have also studied the elastic distortion due to potassium atoms substitutional dissolved in rubidium intercalant layers. From the interlayer spacing variation we find a double force tensor P/sub zz/ = 0.36 eV for potassium defects in RbC/sub 8/ in the small defect concentration region.
- Research Organization:
- Illinois Univ., Urbana (USA)
- DOE Contract Number:
- AC02-76ER01198
- OSTI ID:
- 5531093
- Report Number(s):
- DOE/ER/01198-T5; CONF-821185-3; ON: DE83003913
- Country of Publication:
- United States
- Language:
- English
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