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  • 1
    Electronic Resource
    Electronic Resource
    A search for a thermal spike effect in sputtering (1983)
    Springer
    Applied physics 30 (1983), S. 83-86 
    Details
    ISSN: 1432-0630
    Keywords: 79.20 ; 61.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The temperature dependence of the sputtering yield was measured for lOOkeV per atom bombardment of silver with molecular and atomic antimony ions. No exponential increase of the yield was found in the temperature range from 25° to 775 °C, although a pronounced nonlinear effect is observed when the yield of these projectiles is compared,Y(Sb 2 + )≈ 1.5×[2Y(Sb+)]. We conclude that there is no influence of the lattice temperature on collision spikes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00614908
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  • 2
    Electronic Resource
    Electronic Resource
    An inertial model of atoms: atomic spectra as a resonance problem (1997)
    Springer
    Speculations in science and technology 20 (1997), S. 115-132 
    Details
    ISSN: 1573-9309
    Keywords: atoms; ; atomic structure; ; quantization.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Natural Sciences in General , Technology
    Notes: Abstract A new model of atoms based on the theory of material waves is proposed. Atoms are characterized by an inertial aggregation of negative charge within the atomic shell, the calculation yields, for hydrogen atoms, an atomic radius of 0.470 nm. Atomic spectra result from radial material waves, quantization being the consequence of boundary conditions imposed on the fundamental wave equation. Stark effects and Zeeman effects are treated in detail, they are referred to deformations and rotations of the atomic shell. An analysis of Stern--Gerlach experiments bases subsequent deflections of single atoms on rotations and interactions of magnetic fields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018568721066
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  • 3
    Electronic Resource
    Electronic Resource
    Surface composition of PtCo alloys Results of improved thermodynamic calculations incorporating data from a bulk critical state (1997)
    Springer
    Fresenius' journal of analytical chemistry 358 (1997), S. 169-170 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The new approach for the calculation of surface composition profiles of binary alloys (MTCIP-2A: Modern Thermodynamic Calculation of Interface Properties – Second Approximation), applied so far for low-index surfaces of PtNi, PtCo and PtRh, is further improved and applied for PtCo, leading to a better overall agreement with the experimental data, especially in the previously problematic case of Pt25Co75(111). For that, the Gibbsian thermodynamic conditions for critical states and other changes, such as the calculation of surface free energies (used here when improving the description of lattice distortion release), have been included.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160050374
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  • 4
    Electronic Resource
    Electronic Resource
    On the influence of reactive gases on sputtering and secondary ion emission (1978)
    Springer
    Applied physics 16 (1978), S. 271-278 
    Details
    ISSN: 1432-0630
    Keywords: 79.20 ; 61.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract As a continuation of earlier sputtering yield measurements in an ion microprobe, the influence of oxygen and nitrogen on sputtering yield, ionisation efficiency and depth resolutions has been studied. For inert gas bombardment the yield of Ti and V falls sharply at a certain oxygen exposure. While this decrease in yield can be correlated with an increase in surface binding energy in the case of titanium, cone formation causes the yield to drop for oxygen exposed vanadium. In contrast, during nitrogen bombardment the only effect of oxygen exposure is a drastic increase of the ionisation efficiency; the sputtering yield or the depth resolution Δz/z is hardly influenced by oxygen coverage. As was observed earlier in the case of Cu−Ni layers, Δz is essentially constant for erosion depthsz≳800 Å, thus yielding better resolution at large depths than is to beexpected from a sequential layer removal model. The extent of the transition zone Δz, is determined by surface topography and thus depends on the target composition as well as its structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00885122
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  • 5
    Electronic Resource
    Electronic Resource
    On the chemical sputtering of oxygen-exposed molybdenum (1986)
    Springer
    Applied physics 40 (1986), S. 197-202 
    Details
    ISSN: 1432-0630
    Keywords: 79.20.Nc ; 68.90.+g
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The sputtering of oxygen-exposed molybdenum was studied by means of mass analysis of emitted neutral and charged particles. The irradiation was performed with 8 keV Ar+ ions at temperatures of 25° and 485°C. It was found that the enhanced sputtering yield at elevated temperature during oxygen exposure is due to beam-induced desorption of MoO2 and cascade sputtering of MoO. At this temperature considerable oxygen incorporation also takes place owing to recoil mixing and diffusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00616594
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  • 6
    Electronic Resource
    Electronic Resource
    Analysis of solids by secondary ion and sputtered neutral mass spectrometry (1985)
    Springer
    Applied physics 37 (1985), S. 211-220 
    Details
    ISSN: 1432-0630
    Keywords: 79.20.Nc ; 07.75.+h
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A mass spectrometer is described, which allows the analysis of sputtered neutral and charged particles as well as of residual gas composition. This combined SIMS, SNMS, and RGA instrument consists of a scanning primary ion beam column, an electron impact ionizer, an electrostatic energy filter and an rf quadrupole mass analyzer. Various examples of surface and bulk analysis are presented which demonstrate the beneficial complementary features of these techniques. These are, in particular: a substantial reduction of the matrix effect and fewer complications with samples of low electrical conductivity in SNMS, and the possibility of measuring the depth distribution of gases included in small cavities in the solid in the SNMS/RGA mode. SIMS, on the other hand, allows in many cases higher detection sensitivities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00614819
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  • 7
    Electronic Resource
    Electronic Resource
    Angular distribution and differential sputtering yields for low-energy light-ion irradiation of polycrystalline nickel and tungsten (1980)
    Springer
    Applied physics 21 (1980), S. 327-333 
    Details
    ISSN: 1432-0630
    Keywords: 79.20 N
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Angular differential and total sputtering yields of polycrystalline nickel and tungsten have been measured for 1 and 4 keV H+ and 4 keV He+ ion bombardment at incidence angles between 0° and 80°. The differential sputtering yields (dY/dΩ) were determined with the aid of the collector technique, whereas the total yieldY was determined from the weight loss of the target during irradiation. Asymmetric angular distributions are observed at oblique angles of incidence, the emission maximum being shifted in forward direction (with respect to the incident ions). Even more pronounced than the change in shape of the emission distribution is an increase in the differential yield:dY/dΩ rises with increasing incidence angle over the whole range of ejection angles, the increase being most prominent in the direction of primary recoil emission. This effect is therefore ascribed to emission of surface atoms in direct projectile-surface atom collisions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00895923
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  • 8
    Electronic Resource
    Electronic Resource
    Sputtering yields of nickel and chromium (1989)
    Springer
    Applied physics 49 (1989), S. 711-717 
    Details
    ISSN: 1432-0630
    Keywords: 79.20.−m
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The sputtering yield of polycrystalline nickel and chromium was determined as a function of projectile energy (1–8 keV), projectile mass (N+, Ne+, Ar+, Xe+), angle of incidence (0°–75°), and oxygen partial pressure. Where theoretical values exist, the agreement is reasonable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00616998
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  • 9
    Electronic Resource
    Electronic Resource
    Depth-profiling of Cu-Ni sandwich samples by secondary ion mass spectrometry (1975)
    Springer
    Applied physics 8 (1975), S. 359-360 
    Details
    ISSN: 1432-0630
    Keywords: Secondary ion mass spectrometry ; Depth profiling ; Surface topography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract SIMS depth profiles of copper-nickel thin film targets were measured with argon and nitrogen primary ions. While pronounced cone formation is observed in case of argon irradiation the erosion is much more uniform with nitrogen projectiles, probably due to formation of nitride surface layers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00898370
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  • 10
    Electronic Resource
    Electronic Resource
    Transmission sputtering yields of gold at 6.8 MeV (1976)
    Springer
    Applied physics 11 (1976), S. 289-293 
    Details
    ISSN: 1432-0630
    Keywords: 79.20 ; 61.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The transmission sputtering yield of gold for 6.8-MeV Au– bombardment has been measured on targets of thicknesses from 250 to ∼ 7000 Å. The results are compared to Sigmund's theory and to recent calculations of deposited-energy depth distributions by Winterbon. Good agreement between experimental data and theory is found except for target thicknesses around 4000 Å, where the experimental yield rises by up to a factor two higher than predicted by theory. This discrepancy is interpreted in terms of collision spikes, which have been observed previously in backsputtering experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00897068
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