Abstract
Single crystals of iodine-intercalated C60 have been examined by transmission electron microscopy. Tilting series of Electron Diffraction Patterns (EDP) confirm that it has a simple hexagonal structure with c/a≈1 in accordance with the results of X-ray diffraction, which allows higher precision c/a=1.0024. Cooling and heating experiments were performed in the vacuum of the microscope to investigate the order — disorder phenomena. High-Resolution Electron Microscopy (HREM) images and electron diffraction patterns reveal that the c/2-displacement along the c-direction plays an important role in the transition from the simple hexagonal structure into the fcc structure when iodine is lost from the specimen or “vice versa”. The orientation relationship between the intercalate and the C60 structure is [01\(\overline {\text{1}}\)10]h∥[1\(\overline {\text{1}}\)10]fcc and (001)h∥(110)fcc. A model is proposed to interpret the features observed in EDP and HREM consistently.
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R.M. Fleming, M.J. Rosseinsky, A.P. Ramirez, D.W. Murphy, J.C. Tully, R.C. Haddon, T. Siegrist, R. Tycko, S.H. Glarum, P. Marsh, G. Dabbagh, S.M. Zahurak, A.V. Makhija, C. Hampton: Nature 352, 701 (1991)
Q. Zhu, O. Zhou, N. Coustel, G.B.M. Vaughan, J.P. McCauley, Jr., W.J. Romanow, J.E. Fisher, A.B. Smith III: Science 254, 545 (1991)
P.W. Stephens, L. Mihaly, P.L. Lee, R.L. Whetten, S.M. Huang, R. Kaner, F. Deiderich, K. Holczer: Nature 351, 632 (1991)
A.R. Kortan, N. Kopylov, S. Glarrum, E.M. Gyorgy, A.P. Ramirez, R.M. Fleming, F.A. Thiel, R.C. Haddon: Nature 355, 529 (1992)
M. Kobayashi, Y. Akahama, H. Kawamura, H. Shinohara, H. Sato, Y. Saito: Solid State Commun. 81, 93 (1992)
Y. Akahama et al.: Solid State Commun. 82, 605 (1992)
Q. Zhu, D.E. Cox, J.E. Fisher, K. Kniaz, A.R. McGhie, O. Zhou: Nature 355, 712 (1992)
G. Wortmann, Yu.S. Grushko, A. Bolotov, E.A. Bychkov, H. Werner, R. Schlögl: J. Mol. Cryst. Liq. Cryst. (1993), to be published
A.F. Hebard, M.J. Rosseinsky, R.C. Haddon, D.W. Murphy, S.H. Glarum, T.T.M. Palstra, A.P. Ramirez, A.R. Kortan: Nature 350, 600 (1991)
G. Wortmann, J. Freund, G. Novitzke, J. Dumschat, H. Werner, R. Schlögl: Hasylab Report 324 (1991)
H. Werner, M. Wesemann, R. Schlögl: Europhys. Lett. 20, 107 (1992)
S. Amelinckx, C. van Heurck, D. van Dyck, G. van Tendeloo: Phys. Status Solidi (a) 131, 589 (1992)
S. Amelinckx, P. Delavignette, M. Heerschap: Dislocations and stacking faults in graphite, in Chemistry and Physics of Carbon, ed. by P.L. Walker, Jr., Vol. 1 (Marcel Dekker, New York 1965) pp. 1–50
J.M. Thomas, G.R. Millward, R. Schlögl, H.P. Boehm: Mater. Res. Bull. 15, 671 (1980)
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On leave from Department of Materials Science and Engineering, Zhejiang University, People's Republic of China
On leave from Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, People's Republic of China
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Zhang, X.B., Zhang, X.F., Amelinckx, S. et al. Electron-microscopy and electron-diffraction study of order-disorder phenomena in the intercalate C60(I2)2−x . Appl. Phys. A 58, 107–116 (1994). https://doi.org/10.1007/BF00332166
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DOI: https://doi.org/10.1007/BF00332166