Complete recrystallization of amorphous silicon carbide layers by ion irradiation

Heera, V.; Kögler, R.; Skorupa, W.; Stoëmenos, J.

doi:10.1063/1.114766

Cited by 64 publications

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“…Vapor-phase condensation experiments have shown that in contrast to silicates SiC grains inherently condense in the crystalline state (Clément 2002). Furthermore, SiC as a semiconducting material can easily recrystallize from the amorphous structure by combination of ion irradiation and annealing (Heera et al 1995 leading to a recrystallization of 3C-SiC grains (cubic modification).…”

Section: Conclusion Of Astrophysical Relevancementioning

confidence: 99%

Structural processing of enstatite by ion bombardment

Jäger

Fabian

Schrempel

et al. 2003

A&A

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Abstract. During their lifetime, cosmic dust silicates suffer from a continuous processing by annealing, cosmic ray and UV irradiation, destruction and possibly also interstellar recondensation. Since the discovery that a significant proportion of stardust silicates leaves their star in crystalline form, the question arose as to why the interstellar silicate dust component does not show any indication of crystallinity. Amorphization due to ion irradiation is one possible explanation for the effect. In this paper, the results of irradiation experiments of submicrometre-sized clinoenstatite (MgSiO 3 ) particles with 400 keV Ar

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Section: Conclusion Of Astrophysical Relevancementioning

confidence: 99%

Structural processing of enstatite by ion bombardment

Jäger

Fabian

Schrempel

et al. 2003

A&A

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“…After subsequent annealing at 1000 °C/75', the increasing intensity of the diffuse peak (Fig. 3c) might be due to a slight increasing volume of strongly disordered 6H-SiC related to some reconstruction of Fe-containing regions (in different SiC polytypes [12,13]; in new ferromagnetic phases; …) leading to a new distribution of Fe sites as detected by CEMS.…”

Section: Discussionmentioning

confidence: 93%

Microstructural study of ferromagnetic Fe‐implanted 6H‐SiC

Declémy

Drouet

Eymery

et al. 2007

Phys. Status Solidi (c)

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“…• C [44][45][46], i.e. at a quite lower temperature than that required for damage recovery by thermal annealing.…”

Section: Swift Heavy Ion Beam Induced Epitaxialmentioning

confidence: 99%

Damage Accumulation in Nuclear Ceramics

et al. 2011

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Ceramics are key engineering materials in many industrial domains. The evaluation of radiation damage in ceramics placed in a radiative environment is a challenging problem for electronic, space and nuclear industries. Ion beams delivered by various types of accelerators are very efficient tools to simulate the interactions involved during the slowing-down of energetic particles. This article presents a review of the radiation effects occurring in nuclear ceramics, with an emphasis on new results concerning the damage build-up. Ions with energies in the keV-GeV range are considered for this study in order to explore both regimes of nuclear collisions (at low energy) and electronic excitations (at high energy). The recovery, by electronic excitation, of the damage created by ballistic collisions (swift heavy ion beam induced epitaxial recrystallization process) is also reported. 61.80.Jh, 61.82.Ms, 61.85.+p, 68.37.Lp PACS Introductory remarksCeramics are refractory solids which possess very interesting physico-chemical properties, such as high strength, low thermal expansion, chemical stability, strong resistance against oxidation, good behavior under irradiation, etc. These materials are therefore often employed in hostile media where efficient use of energy is a prime need, e.g. extreme temperatures, corrosive surroundings, radiative environment, etc. Examples of the interest of ceramics for applications are provided by electronic, space and nuclear industries. For instance, such materials are nowadays widely used for surface coating and electronic packaging, and they are envisioned in a near future for the safe and long-term disposal of radioactive waste, and the development of inert fuel matrices for actinide transmutation. They may also be employed as cladding materials for gas-cooled fission reactors and structural components in fusion reactors. For all these applications, there is an urgent need of data concerning the behavior of nuclear ceramics upon irradiation.The topic that is concerned here is so broad that it requires a whole book to cover the main issues; the state of knowledge was regularly upgraded in thorough reviews [1][2][3][4][5][6][7][8][9][10]. To deal it in a short article, we focus on the presentation of a few remarkable examples concerning the ion-beam modifications of nuclear ceramics (zirconia, pyrochlores, silicon carbide, etc.) with an emphasis on the mechanisms leading to damage cre- * corresponding author; e-mail: thome@csnsm.in2p3.fr ation and phase transformations. We report typical results obtained using advanced characterization techniques (the Rutherford backscatteringspectrometry associated to channeling (RBS/C), X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman) for ceramics irradiated with ions in a broad energy range (from keV to GeV) in order to explore both nuclear collision and electronic excitation regimes.The first section is devoted to the presentation of general considerations about the damage build-up in ion--irradiated crystals and of a new mo...

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Complete recrystallization of amorphous silicon carbide layers by ion irradiation

Cited by 64 publications

References 0 publications

Structural processing of enstatite by ion bombardment

Structural processing of enstatite by ion bombardment

Microstructural study of ferromagnetic Fe‐implanted 6H‐SiC

Damage Accumulation in Nuclear Ceramics

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