Ion beam mixing and radiation enhanced diffusion in metal/ceramic interfaces

Neubeck, K.; Lefaucheur, C.-E.; Hahn, H.; Balogh, A.G.; Baumann, H.; Bethge, K.; Rück, D.M.

doi:10.1016/b978-0-444-82334-2.50111-8

Cited by 3 publications

(6 citation statements)

References 17 publications

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“…Even throng the crystalline sapphire has such low ion-induced viscosity that the burrowing effect can be neglected. After the extensive Ar ion irradiation (approximately above 3.8×10 16 cm -2 in our study), the near surface of the sapphire became amorphous, which can be verified by the selected area diffraction pattern in the TEM observation. A faint diffuse ring with the faded crystalline spots were observed after a irradiation fluence of 4.5×10 16 cm -2 (Fig.…”

Section: Effects Of Annealing On the Nanostructuresmentioning

confidence: 76%

“…Figure 5 shows the photoabsorption spectra after thermal annealing of the samples irradiated from 3.8 × 10 16 …”

Section: Effects Of Annealing On the Nanostructuresmentioning

confidence: 99%

“…Therefore, ion beam mixing attracts much attention for their ability to produce ion modified materials with higher solute concentrations at lower irradiation fluences than can be achieved with conventional high-fluence implantation techniques. At the same time, the energy deposition for the energetic ion can effectively induce mass transfer and result in irradiation-enhanced diffusion [16][17][18][19][20][21][22]. This diffusion will lead to the lateral transport of metal atoms, and therefore the spinodal dewetting of thin metal films [21].…”

Section: Introductionmentioning

confidence: 99%

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Shift of localized surface plasmon resonance by Ar-ion irradiation of Ag–Au bimetallic films deposited on Al2O3 single crystals

Meng

Shibayama

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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Effects of Ar-ion induced surface nanostructuring were studied using 100 keV Ar-ion irradiation of 30 nm Ag-Au bimetallic films deposited on Al 2 O 3 single crystals, under irradiation fluences ranging from 5.0 × 10 15 cm -2 to 6.3 × 10 16 cm -2 . Scanning electron microscope was used to study the ionbeam-induced surface nanostructuring. As the irradiation fluence increased, dewetting of the bimetallic films on the Al 2 O 3 substrate was observed, and formation of isolated Ag-Au nanostructures sustained on the substrate were obtained. Next, thermal annealing was performed under high vacuum at 1073 K for 2 hours; a layer of photosensitive Ag-Au alloy nanoballs partially embedded in the Al 2 O 3 substrate was obtained when higher fluence irradiation (> 3.8 × 10 16 cm -2 ) was used. The microstructures of the nanoballs were investigated using a transmission electron microscope, and the nanoballs were found to be single crystals with a FCC structure. In addition, photoabsorption spectra were measured, and localized surface plasmon resonance peaks were observed. With increase in the irradiation fluence, the size of the Ag-Au nanoballs on the substrate decreased, and a blue-shift of the LSPR peaks was observed. Further control of the LSPR frequency over a wide range was achieved by modifying the chemical components, and a red-shift of the LSPR peaks was observed as the Au concentration increased. In summary, ion irradiation is an effective approach toward surface nanostructuring, and the nanocomposites obtained have potential applications in optical devices.

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Section: Effects Of Annealing On the Nanostructuresmentioning

confidence: 76%

“…Figure 5 shows the photoabsorption spectra after thermal annealing of the samples irradiated from 3.8 × 10 16 …”

Section: Effects Of Annealing On the Nanostructuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Shift of localized surface plasmon resonance by Ar-ion irradiation of Ag–Au bimetallic films deposited on Al2O3 single crystals

Meng

Shibayama

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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“…20 4/MgO 2/Ta 10. The metal layers were deposited under an Ar pressure of 2.5ϫ 10 −3 mbar by dc sputtering, while the MgO layer was deposited by rf sputtering directly from a sintered MgO target under an Ar pressure of 4 ϫ 10 −2 mbar.…”

Section: Methodsmentioning

confidence: 99%

“…20 If this effect exists in our analysis, i.e., if B diffusion occurs due to sputtering, it could lead to misinterpretation of the results. To check this point, we have also performed the depth analysis in the similar sample before annealing.…”

Section: Depth Analysis Of the Sample Before Annealingmentioning

confidence: 99%

Depth analysis of boron diffusion in MgO/CoFeB bilayer by x-ray photoelectron spectroscopy

Lü

Lépine

Jézéquel

et al. 2010

Journal of Applied Physics

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We have studied the boron ͑B͒ diffusion in MgO/CoFeB bilayer by x-ray photoelectron spectroscopy depth analysis. A large concentration of B ͑B / Mg= 0.16͒ was found to diffuse into the MgO barrier after 350°C annealing. The boron in MgO is in a highly oxidized B 3+ state and is homogenously distributed in the whole barrier. The important B diffusion in MgO could be related to the CoFeB crystallization process which begins from the under CoFeB/Ru interface and pushes boron atoms to diffuse into the MgO barrier during annealing.

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