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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/3363

Title: Crystal Structure and Electronic Transport of Dy@C_<82>
Authors: Kubozono, Y
Takabayashi, Y
Shibata, K
Kanbara, T
Fujiki, S
Kashino, S
Fujiwara, A
Emura, S
Issue Date: 2003-03
Publisher: AMERICAN PHYSICAL SOCIETY
Magazine name: Physical Review B
Volume: 67
Number: 11
Start page: 115410-1
End page: 115410-8
DOI: 10.1103/PhysRevB.67.115410
Abstract: The crystal structure of Dy@C_<82> isomer I at 298 K has been determined by Rietveld refinement for x-ray powder diffraction with synchrotron radiation. Isomer I shows a simple cubic structure (sc: Pa3^^-) with a lattice constant a of 15.78(1) Å. The C_2 axis of a C_2v-C_<82> cage aligns along the[111]direction of this crystal lattice. The C_<82> cage is orientationally disordered to satisfy a 3^^- symmetry along [111], which is requested in this space group. The large thermal parameter for the Dy atom estimated from the x-ray diffraction probably reflects a large disorder caused by a floating motion of the Dy atom inside the C_<82> cage as well as a ratchet-type motion of the Dy@C_<82> molecule. The electronic transport of thin film of Dy@C_<82> shows a semiconducting behavior. The energy gap E_g is estimated to be 0.2 eV. Further, the variation of valence from Dy^ <3+> to Dy^<2+> is found by metal doping into the Dy@C_<82> crystals.
Rights: Y. Kubozono, Y. Takabayashi, K. Shibata, T. Kanbara, S. Fujiki, S. Kashino, A. Fujiwara and S. Emura, Physical Review B, 67(11), 115410, 2003. "Copyright 2003 by the American Physical Society." http://prola.aps.org/abstract/PRB/v67/i11/e115410
URI: http://hdl.handle.net/10119/3363
Material Type: publisher
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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