Comments concerning the crystal structure of B/sub 4/C

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The crystal structure of B/sub 4/C at approx.20 atom% carbon is reported. The space group is R 3m, hexagonal cell lattice constants are a=5.6039(4)A, c=12.0786(14)A, v=109.50A/sup 3/, Z=3, ..mu..(MoK..cap alpha..)=0.05 mm/sup -1/. The excess carbon above the stoichiometric composition of B/sub 13/C/sub 2/ replaces up to 1/6 of the boron in the rhombohedral boron site (B2). The results this refinement are reported and compared with earlier results reported on lower carbon samples. Evidence is that the icosahedron is essentially pure boron at and below carbon compositions of 13.3 a%. 8 refs., 5 tabs.

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Pages: 6

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Larson, A.C. January 1, 1985.

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The crystal structure of B/sub 4/C at approx.20 atom% carbon is reported. The space group is R 3m, hexagonal cell lattice constants are a=5.6039(4)A, c=12.0786(14)A, v=109.50A/sup 3/, Z=3, ..mu..(MoK..cap alpha..)=0.05 mm/sup -1/. The excess carbon above the stoichiometric composition of B/sub 13/C/sub 2/ replaces up to 1/6 of the boron in the rhombohedral boron site (B2). The results this refinement are reported and compared with earlier results reported on lower carbon samples. Evidence is that the icosahedron is essentially pure boron at and below carbon compositions of 13.3 a%. 8 refs., 5 tabs.

Physical Description

Pages: 6

Notes

NTIS, PC A02/MF A01.

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  • International conference on the physics and chemistry of boron and boron-rich borides, Albuquerque, NM, USA, 29 Jul 1985

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  • Other: DE85017566
  • Report No.: LA-UR-85-2833
  • Report No.: CONF-850786-3
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5413632
  • Archival Resource Key: ark:/67531/metadc1072315

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  • January 1, 1985

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  • Feb. 4, 2018, 10:51 a.m.

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  • May 22, 2018, 12:17 p.m.

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Larson, A.C. Comments concerning the crystal structure of B/sub 4/C, article, January 1, 1985; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1072315/: accessed December 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.