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Wyświetlanie 1-10 z 28
Tytuł:
Damage Production in As Implanted GaAs$\text{}_{1-x}$P$\text{}_{x}$
Autorzy:
Krynicki, J.
Warchoł, S.
Rzewuski, H.
Groetzschel, R.
Powiązania:
https://bibliotekanauki.pl/articles/1932091.pdf
Data publikacji:
1995-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.Jh
Opis:
Post-implantation damage in GaAs$\text{}_{1-x}$P$\text{}_{x}$ compounds (x = 0, 0.15, 0.39, 0.65, and 1) implanted with 150 keV As ions in the dose range 1 × 10$\text{}^{13}$ -8 × 10$\text{}^{13}$ cm$\text{}^{-2}$ at 120 K was investigated. The depth distribution of damage and the degree of amorphization were measured by Rutherford backscattering 1.7 MeV He$\text{}^{+}$ channeling technique. The critical damage dose and the critical energy density necessary for amorphization were determined. It is shown that GaAsP is easier to amorphize (lower critical damage dose) than the binary crystals (GaAs, GaP) at low temperatures.
Źródło:
Acta Physica Polonica A; 1995, 87, 1; 249-252
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of High Energy Ion Implantation on the Structure and Mechanical Properties of Aluminium Alloys
Autorzy:
Anishchik, V.
Poliak, N.
Ponaryadov, V.
Opielak, M.
Boiko, O.
Powiązania:
https://bibliotekanauki.pl/articles/1033770.pdf
Data publikacji:
2017-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.Jh
61.80.-x
Opis:
The effect of implantation of Ne⁺, Kr⁺, and Bi⁺ ions over the energy range 26-710 MeV on the structural-phase state and the mechanical properties of the aluminum-based alloys (Al-Cu, Al-Cu-Mg, Al-Cu-Zn, Al-Mn) was studied. The revealed peculiarities of variations in the structure, phase composition, and mechanical properties of aluminum alloys are attributed to the electron deceleration of ions making the principal contribution to the formation of radiation defects which enhance the diffusion processes in the targets.
Źródło:
Acta Physica Polonica A; 2017, 132, 2; 291-294
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New Possibilities of Swift Heavy Ion Implantation in Material Science and Technology
Autorzy:
Słowiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/2011021.pdf
Data publikacji:
1999-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.-x
61.80.Jh
Opis:
We summarise briefly the advantages of swift heavy ions (≈ 1 MeV/u) application to analysis and treating of solids in order to modify their properties. As an illustration some examples of this application are quoted.
Źródło:
Acta Physica Polonica A; 1999, 96, 2; 239-244
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Ion-Matter Interaction with Swift Heavy Ions in the Light of Inelastic Thermal Spike Model
Autorzy:
Toulemonde, M.
Dufour, C.
Paumier, E.
Powiązania:
https://bibliotekanauki.pl/articles/2044665.pdf
Data publikacji:
2006-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.Az
61.80.Jh
Opis:
A description of the inelastic thermal spike model is presented in order to correlate the energy deposited by swift heavy ions to the nanometric matter transformation induced in inorganic metallic and insulating materials. Knowing that insulator is more sensitive than metallic material and that amorphous material is in general more sensitive than a crystalline one, it appears evident that the electron-phonon coupling constant g plays a key role. It will be shown that in metallic material we are able to describe different phenomena with the same value of g: for example, track formation with defect annealing or sputtering of atoms. In insulators the emphasis is made on results obtained for amorphizable materials like SiO$\text{}_{2}$ quartz and for non-amorphizable ionic crystals like CaF$\text{}_{2}$. Assuming that tracks result from a transient thermal process, a quantitative development of the model is proposed using the electron-atom mean free pathλ (inversely proportional to the square root of g) as a free parameter. With this parameter it is possible to quantitatively describe track radii in a wide range of ion velocities - whatever the bonding character of the crystal is - assuming specific criteria: tracks may result from a rapid quenching of a cylinder of matter in which the energy deposited on the lattice has overcome either the energy necessary to reach a quasi-molten phase in the case of amorphizable materials or the vaporization energy in the case of non-amorphizable materials. The evolution of theλ parameter of the considered insulator decreases versus the band gap energy. In this model, velocity effect, and a link between track formation and sputtering of atoms is established for amorphizable insulators while open questions appear for ionic crystals.
Źródło:
Acta Physica Polonica A; 2006, 109, 3; 311-322
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heterogeneous Amorphization of Cd Implanted GaAs at Room Temperature
Autorzy:
Krynicki, J.
Rzewuski, H.
Groetzschel, R.
Claverie, A.
Powiązania:
https://bibliotekanauki.pl/articles/1886822.pdf
Data publikacji:
1991-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.Jh
61.70.Tm
Opis:
Amorphization of GaAs implanted with Cd in the dose range of 2 x 10$\text{}^{13}$-1.2 x 10$\text{}^{14}$ ions/cm2 and the energy range of 20 to 180 keV at room temperature has been investigated. The degree and the depth distributions of postimplanted damage were measured by using RBS technique. The critical dose for each Cd-ion energy was determined. The amorphization models have been discussed. The results obtained are in agreement with theoretical predictions supporting heterogeneous amorphization of Cd-implanted GaAs at room temperature.
Źródło:
Acta Physica Polonica A; 1991, 79, 2-3; 349-353
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heterogeneous Amorphization of P and As Implanted GaAs at Low Temperatures
Autorzy:
Krynicki, J.
Rzewuski, H.
Turos, A.
Powiązania:
https://bibliotekanauki.pl/articles/1924215.pdf
Data publikacji:
1992-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.Jh
61.70.Tm
Opis:
Amorphization of P and As implanted GaAs at liquid nitrogen temperature has been investigated. The post-implantation damage was measured by means of Rutherford Backscattering (RBS) He$\text{}^{+}$ channeling technique. The critical dose and critical energy densities for amorphization were determined. From the results obtained it is concluded that for both ions the amorphization process can be satisfactorily described by the heterogeneous model.
Źródło:
Acta Physica Polonica A; 1992, 82, 5; 871-875
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implantation of Rare-Earth Atoms into Si and III-V Compounds
Autorzy:
Kozanecki, A.
Langer, J. M.
Peaker, A. R.
Powiązania:
https://bibliotekanauki.pl/articles/1924312.pdf
Data publikacji:
1993-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.Jh
78.55.-m
Opis:
Most recent results on doping of Si and semiconductors by the implantation of rare-earth atoms are reviewed. It is shown that up to the concentration of about 1018 cm' clustering and precipitation can be avoided. Post-implantation annealing leads not only to a decrease in radiation damage, but in some cases also to migration of rare-earth implants. The results of the rare earth lattice location by the Rutherford backscattering measurements are also reported.
Źródło:
Acta Physica Polonica A; 1993, 83, 1; 59-70
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure Changes in Cz-Si Single Crystals Irradiated with Fast Oxygen and Neon Ions
Autorzy:
Datsenko, L.
Żymierska, D.
Auleytner, J.
Klinger, D.
Machulin, V.
Klad'ko, V.
Melnik, V.
Prokopenko, I.
Czosnyka, T.
Choiński, J.
Powiązania:
https://bibliotekanauki.pl/articles/2011007.pdf
Data publikacji:
1999-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.Jh
61.10.-i
61.72.-y
Opis:
The research of the surface and the near-surface region of Cz-Si wafers irradiated with fast oxygen and neon ions of energy 4 MeV/u and dose 10$\text{}^{14}$ particles/cm$\text{}^{2}$ is presented. In our study several methods based on the Bragg case of X-ray diffraction using Ag K_{α$\text{}_{1}}$, as well as reflection high-energy electron diffraction and Nomarsky optical microscopy were used. It was shown that implantation with fast neon ions causes larger disturbances of silicon crystal structure than irradiation with oxygen ions.
Źródło:
Acta Physica Polonica A; 1999, 96, 1; 137-142
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
X-Ray Absorption Study of Ti, Cu and Fe Implanted AlN
Autorzy:
Borowski, M.
Traverse, A.
Mimault, J.
Powiązania:
https://bibliotekanauki.pl/articles/1931700.pdf
Data publikacji:
1994-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.60.Dq
61.10.Lx
61.80.Jh
Opis:
Sintered AlN ceramics were implanted by Ti, Fe and Cu ions up to 1.9 × 10$\text{}^{17}$ atoms/cm$\text{}^{2}$ at mean energies of 70-110 keV in order to investigate the role of the chemical properties of the implanted species. on the phase formed during the implantation process. X-ray absorption studies were performed at room and at liquid nitrogen temperature to give information on the resulting systems and local environments of the Ti, Fe and Cu atoms. We observe the formation of TiN even for as-implanted samples, while the Cu ions aggregate to clusters. The Fe implanted samples show an intermediate behavior with both nitride formation and Fe clustering. In conclusion, the heat of formation is found to be a key parameter for the final system.
Źródło:
Acta Physica Polonica A; 1994, 86, 5; 713-719
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reflectivity Spectra of CdTe Implanted at Room and Liquid Nitrogen Temperature
Autorzy:
Czarnecka-Such, E.
Kisiel, A.
Rodzik, A.
Gołacki, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1923759.pdf
Data publikacji:
1992-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.Jh
61.70.Tm
78.20.Ci
Opis:
The fundamental reflectivity spectra of monocrystalline CdTe, implanted with Ag ions at room temperature and with Er ions at liquid nitrogen temperature, are investigated in the 0.5-6.0 eV energy range. The analysis of the obtained spectra leads to the suggestion that temperature of implantation influences the obtained results much more decisively than values of other parameters. For the implantation carried out at 300 K no significant changes in reflectivity spectra are observed regardless of magnitude of the ion dose (up to 5 × 10$\text{}^{15}$/cm$\text{}^{2}$) and this fact, in our opinion, is due to the self-annealing effect. For samples implanted at temperature 77 K with comparable doses of ions, however, the characteristic changes of shape and intensity of reflection coefficient spectra appear. The manner of this changes gives evidence that temperature 77 K is low enough to make the radiation induced lattice defects stable (frozen-in) which are responsible for the observed behaviour of CdTe fundamental reflectivity spectra.
Źródło:
Acta Physica Polonica A; 1992, 82, 5; 781-784
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 28

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