The local environment of Co in B{sub 5}CH{sub x}

Journal Article · Tue Apr 01 00:00:00 EDT 2008 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2836798· OSTI ID:21137309

Dowben, P A; Jing, Lui; Skomski, Ralph ^[1]; Ignatov, A Yu ^[2]

---

1. Department of Physics and Astronomy and the Nebraska Center for Materials and Nanoscience, Behlen Laboratory of Physics, University of Nebraska, P.O. Box 880111, Lincoln, Nebraska 68588-0111 (United States)
2. Center for Advanced Microstructures and Devices, Louisiana State University, 6980 Jefferson Highway, Baton Rouge, Louisiana 70806 (United States)

Cobalt-doped boron carbides produced by simultaneous plasma-enhanced chemical vapor deposition of carborane and cobaltocene are investigated. Cobalt does not dope plasma-enhanced chemical vapor deposition grown boron carbides as a random fragment of the cobaltocene source gas. The Co atoms are fivefold boron coordinated (R=2.1 A) and chemically bonded to the icosahedral cages of B{sub 10}CH{sub x} or B{sub 9}C{sub 2}H{sub y}. Pairwise Co doping occurs with the cobalt atoms favoring sites about 5.3 A apart. The cobalt strongly hybridizes with the molecular orbitals of the icosahedral cage, and the states in the region of the band gap probably have a strong cobalt weight.

• OSTI ID: 21137309
• Journal Information: Journal of Applied Physics, Vol. 103, Issue 7; Conference: 52. annual conference on magnetism and magnetic materials, Tampa, FL (United States), 5-9 Nov 2007; Other Information: DOI: 10.1063/1.2836798; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMS
BORON
BORON CARBIDES
CHEMICAL BONDS
CHEMICAL VAPOR DEPOSITION
COBALT
DOPED MATERIALS
ENERGY GAP
RANDOMNESS