The nature of damage in ion-implanted and annealed diamond

Kalish, R.; Reznik, A.; Nugent, K. W.; Prawer, Steven

doi:10.1016/s0168-583x(98)00857-x

Cited by 110 publications

(87 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4] The investigation of native and radiation-induced point-defects in diamond (as well as in other semiconductors) has thus attracted large theoretical and experimental interest. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Despite the sim-Raman peak at 1332 cm −1 , defective samples are characterized by several additional features, the most significant ones being observed at about 1450, 1490, 1630 and 1680 cm −1 . 3,19 The spectral features at 1630 and 1680 cm −1 have been attributed to sp 2 defects.…”

Section: Introductionmentioning

confidence: 99%

Infrared and Raman spectroscopic features of the self-interstitial defect in diamond from exact-exchange hybrid DFT calculations

Salustro

Erba

Zicovich‐Wilson

et al. 2016

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

Quantum-mechanical calculations are performed to investigate structural, electronic, and Infrared (IR) and Raman spectroscopic features of one of the most common radiation-induced defects in diamond: the "dumb-bell" 100 split self-interstitial. A periodic super-cell approach is used in combination with all-electron basis sets and hybrid functionals of the density-functional-theory (DFT), which include a fraction of exact non-local exchange and are known to provide a correct description of the electronic spin localization at the defect, at variance with simpler formulations of the DFT. The effects of both defect concentration and spin state are explicitly addressed. Geometrical constraints are found to prevent the formation of a double bond between the two three-fold coordinated carbon atoms. On the contrary, two unpaired electrons are fully localized on each of the carbon atoms involved in the defect. The open-shell singlet state is slightly more stable than the triplet (the energy difference being just 30 meV, as the unpaired electrons occupy orthogonal orbitals) while the closed-shell solution is less stable by about 1.55 eV. The formation energy of the defect from pristine diamond is about 12 eV. The Raman spectrum presents only two peaks of low intensity at wave-numbers higher than the pristine diamond peak (characterized by normal modes extremely localized on the defect), whose positions strongly depend on defect concentration as they blue shift up to 1550 and 1927 cm −1 at infinite defect dilution. The first of these peaks, also IR active, is characterized by a very high IR intensity, and might then be related to the strong experimental feature of the IR spectrum occurring at 1570 cm −1 . A second very intense IR peak appears at about 500 cm −1 , which, despite being originated from a "wagging" motion of the self-interstitial defect, exhibits a more collective, less localized character.

show abstract

Section: Introductionmentioning

confidence: 99%

Infrared and Raman spectroscopic features of the self-interstitial defect in diamond from exact-exchange hybrid DFT calculations

Salustro

Erba

Zicovich‐Wilson

et al. 2016

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…solids (e.g., Elman et al 1982;Strazzulla and Baratta 1992;Baratta et al 1996;Kalish et al 1999;Strazzulla et al 2001;Costantini et al 2002;Ferini et al 2004). …”

Section: Introductionmentioning

confidence: 99%

Ion irradiation of astrophysical ices

Palumbo

Baratta

Fulvio

et al. 2008

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

“…The latter assumption is only partially justified, since it has been established that even after high-temperature annealing, the crystal structure of implanted diamond retains a small degree of residual damage 27 , as clearly observable in the electrical characterization of the material 2 . However, this effect can reasonably be neglected when considering variations in the mechanical properties 26,37 .…”

Section: D Modelling Of Graphitic Layers Within the Diamond Crystalmentioning

confidence: 99%

“…depth and/or local strain, self-annealing, etc.) [23][24][25][26][27] . An observable effect of 4 ion implantation and laser irradiation in diamond is surface swelling, due to the density variation in the sub-superficial damaged regions and the corresponding constrained volume expansion [28][29][30] .…”

Section: Introductionmentioning

confidence: 99%

An analytical model for the mechanical deformation of locally graphitized diamond

Piccardo

Bosia

Olivero

et al. 2014

Diamond and Related Materials

View full text Add to dashboard Cite

We propose an analytical model to describe the mechanical deformation of single-crystal diamond following the local sub-superficial graphitization obtained by laser beams or MeV ion microbeam implantation. In this case, a local mass-density variation is generated at specific depths within the irradiated micrometric regions, which in turn leads to swelling effects and the development of corresponding mechanical stresses. Our model describes the constrained expansion of the locally damaged material and correctly predicts the surface deformation, as verified by comparing analytical results with experimental profilometry data and Finite Element simulations. The model can be adopted to easily evaluate the stress and strain fields in locally graphitized diamond in the design of microfabrication processes involving the use of focused ion/laser beams, for example to predict the potential formation of cracks, or to evaluate the influence of stress on the properties of opto-mechanical devices.

show abstract

The nature of damage in ion-implanted and annealed diamond

Cited by 110 publications

References 18 publications

Infrared and Raman spectroscopic features of the self-interstitial defect in diamond from exact-exchange hybrid DFT calculations

Infrared and Raman spectroscopic features of the self-interstitial defect in diamond from exact-exchange hybrid DFT calculations

Ion irradiation of astrophysical ices

An analytical model for the mechanical deformation of locally graphitized diamond

Contact Info

Product

Resources

About