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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/4618

Title: Intralayer Carbon Substitution in the MgB_2 Superconductor
Authors: Takenobu, T.
Ito, T.
H. Chi, Dam
Prassides, K.
Iwasa, Y.
Issue Date: 2001-09-11
Publisher: American Physical Society
Magazine name: Physical Review B
Volume: 64
Number: 13
Start page: 134513-1
End page: 134513-3
DOI: 10.1103/PhysRevB.64.134513
Abstract: We report that the ternary MgB_<2-x>C_x compounds adopt an isostructural AlB_2-type hexagonal structure in a relatively small range of nominal carbon concentration, x<0.1. The lattice parameter a decreases almost linearly with increasing carbon content x, while the c parameter remains unchanged, indicating that carbon is exclusively substituted in the boron honeycomb layer without affecting the interlayer interactions. The superconducting transition temperature T_c decreases quasilinearly as a function of the carbon concentration, with a slope steeper than that for the isoelectronic Mg_<1-x>Al_xB_2.
Rights: T. Takenobu, T. Ito, Dam Hieu Chi, K. Prassides and Y. Iwasa., Physical Review B, 64(13), 2001, 134513-1-134513-3. Copyright 2001 by the American Physical Society. http://link.aps.org/abstract/PRB/v64/e134513
URI: http://hdl.handle.net/10119/4618
Material Type: publisher
Appears in Collections:a10-1. 雑誌掲載論文 (Journal Articles)

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