Ion implantations in boron: Remarkable stability of covalent structures base on icosahedra

Schmirgeld, L.; Zuppiroli, L.; Brunel, M.; Delafon, J.; Templier, C.

doi:10.1063/1.40797

Cited by 4 publications

(4 citation statements)

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“…The experiments by the Zuppiroli-group indicate remarkable resistance tolerance of icosahedral boron-rich solids [9][10][11][12]. To confirm the self-healing that these experiments imply, additional radiation damage experiments on many icosahedral boron-rich solids have been conducted in collaboration with the Ewing-group at facilities at the University of Michigan and at Argonne National Laboratory using samples provided by T.L.…”

Section: ''Self-healing'' Of Radiation Damage In Icosahedral Boronricmentioning

confidence: 79%

“…High-resolution transmission electron microcopy was used to interrogate several icosahedral boron-rich solids (b-rhombohedral boron and boron carbides) during and after heavy bombardments [9][10][11]. The damage, clustering of defects and amorphization, expected of common semiconductors was not observed even when bombardments were carried out at a very low temperature, $12 K [7].…”

Section: ''Self-healing'' Of Radiation Damage In Icosahedral Boronricmentioning

confidence: 99%

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Unusual properties of icosahedral boron-rich solids

Emin

2006

Journal of Solid State Chemistry

166

171

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Section: ''Self-healing'' Of Radiation Damage In Icosahedral Boronricmentioning

confidence: 79%

Section: ''Self-healing'' Of Radiation Damage In Icosahedral Boronricmentioning

confidence: 99%

Unusual properties of icosahedral boron-rich solids

Emin

2006

Journal of Solid State Chemistry

166

171

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“…However, all of the solids exhibit the same exceptional resistance to radiation. Previous studies in which "icosahedral" boron solids are exposed to radiation have involved the bombardment of B12P2 with 400 keV electrons 14 , and of β-boron with 160keV N + ions 13,14 . In both cases the radiative impact energies are five orders of magnitude greater than common bond dissociation energies, but the crystal structure appeared to remain unaltered in both cases.…”

Section: Introductionmentioning

confidence: 99%

Impact scenarios in boron carbide: A computational study

Sugden

Plant

Bell

2016

J. Theor. Comput. Chem.

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The effect of radiative impacts on the structure of boron carbide has been studied by both classical and ab initio simulations. As a part of this study, a new forcefield was developed for use in studying boron carbide materials. Impact scenarios in boron carbide were simulated in order to investigate the exceptional resistance of this material, and other icosahedral boron solids, to high-energy impact events.It was observed that interstitial defects created by radiative impacts are likely to be quenched locally, utilising the high substitutional disorder of chains and cages in the boron carbide structure, rather than via impacted atoms recombining with their vacated lattice site.

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“…Schmirgeld et al [15] have tried to disorder /3-boron crystals by ion irradiation in order to obtain new structural forms with fivefold symmetry. However, even with very high doses by which every atom was displaced more than 35 times, no amorphization was observed.…”

Section: Introductionmentioning

confidence: 99%

Order and Disorder in Boron Phases

Favia

Stoto

Carrard

et al. 1996

Microsc. Microanal. Microstruct.

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Abstract. 2014 The complicated rhombohedral unit cell of crystalline 03B2-boron containing 105 atoms is a good approximant structure for a quasicrystal. Thus one may wonder if between the amorphous and the crystalline phases of boron, a non-metallic quasi-crystalline phase could exist. In order to examine this possibility and to characterize order and disorder in boron phases, we have performed high resolution electron microscopy (HREM) and electron energy loss spectroscopy (EELS) measurements. In the crystalline phase, the creation of large number of microtwins and stacking faults is the way that nature chooses to disorder boron. The presence of these microtwins seems to be the major obstacle towards the formation of a quasicrystal. A comparison between energy loss near edge structures and electronic density of states for different boron compounds has allowed us to identify the signature of the icosahedra in EELS measurements. In the amorphous phase, a special processing of HREM images proposed by Fan

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Ion implantations in boron: Remarkable stability of covalent structures base on icosahedra

Cited by 4 publications

References 0 publications

Unusual properties of icosahedral boron-rich solids

Unusual properties of icosahedral boron-rich solids

Impact scenarios in boron carbide: A computational study

Order and Disorder in Boron Phases

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