Properties of physically deposited thin aluminium film …

In studies by Ghamdi et al. [192] conducted on the properties of Al-doped ZnO thin films deposited on glass substrates through spin coating at different Al concentrations of the films, it was found that conductivity, mobility carriers and carrier …

Highly increased breakdown potential of anodic films on aluminum …

The growth of a uniform barrier-type anodic film on aluminum is usually terminated by electric breakdown, which is controlled by the resistance of electrolyte or anion concentration. In this study, highly resistive porous layers have been introduced by anodizing aluminum in sulfuric acid electrolyte followed by boiling water treatment to …

Influence of growth temperature on the properties of …

By systematically varying the growth temperature, the study investigates its impact on the oxygen levels, defect states, and crystallographic texture of the AlN thin …

Deposition, Characterization, and Modeling of …

The Sc x Al 1−x N thin-film-based resonators with high Sc concentration offer prospects for developing high-frequency and broad wideband acoustic wave filters for ... Dubois, M.-A.; Muralt, P. Properties …

Chemical–mechanical polish of aluminum alloy thin films: …

The removal rates of Al alloy films decline with increasing slurry pH. In the non-passivating region (pH=2) where the material removal is a competition between the …

(PDF) Effect of Aluminum concentration on structural and …

The films were characterized and the effect of aluminum (Al) concentration (2 at %-6 at %) on the structural and optical properties was studied. The average crystallite size obtained from Scherer ...

The oxidation of aluminum films in low-pressure oxygen atmospheres

The oxidation kinetics of aluminum films exposed to oxygen atmospheres at room temperature in the pressure range of from 10 −3 to 10 Torr are followed by simultaneous measurement of the film's oxygen uptake and work function as a function of time under the conditions of constant pressure. For successive increases in pressure, the experimental …

Realization of Precise Tuning the Superconducting …

Magnetic impurities in metallic superconductors are important for both fundamental and applied sciences. In this study, we focused on dilute Mn-doped aluminum (AlMn) films, which are common superconducting materials used to make transition edge sensors and other superconducting devices. We developed a multi-energy ion …

Enhanced corrosion protection of aluminum by

Fig. 1 (a), shows the ATR-FTIR spectra of sodium silicate thin films on aluminum substrates fabricated using the solutions with concentrations of 0.1 M, 0.5 M, 0.75 and 1 M. Fig. 1 (a-I) represents the thin film fabricated using 0.1 M sodium silicate solution. Due to the low concentration, very tiny peaks are observed. Download : …

Optical and electrical properties of aluminum-doped zinc …

Aluminum-doped zinc oxide nanopowders were prepared using a surfactant assisted complex sol–gel method, and were characterized using inductively coupled plasma, X-ray diffraction, scanning electron microscopy/energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and UV–Vis spectroscopy. Al was …

Anticorrosion thin film smart coatings for aluminum alloys

Over the past 10 years the development of so-called smart coatings has been pursued. This chapter discusses some of the new trends in thin film developments for corrosion protection of aluminum alloys used in transportation. Some of the state-of-the-art thin film industrial technologies have been discussed, followed by the latest …

Recent Advances in Nanoporous Anodic Alumina: Principles, …

Higher concentration of the electrolyte and temperature seems to reduce the resulting interpore distance, while the applied potential was found to be in a positive correlation . ... In this case, the idea was to form hydrate aluminum film prior to the anodization. The electropolished aluminum sheet was subjected to hydrothermal …

Influence of scandium concentration on power generation …

The authors have investigated the influence of scandium concentration on the power generation figure of merit (FOM) of scandium aluminum nitride (ScxAl1−xN) films prepared by cosputtering.

A study on the growth mechanism and the process …

the film morphology by varying the processing parameters of PP-MOCVD - choice of solvent, concentration, and presence of a shield. Aluminum sec-butoxide (ASB) was used as the aluminum source while hexane and toluene were used as the solvents. The films were deposited at 475oC at different precursor concentrations. It was observed that the …

Aluminum doped zinc oxide deposited by atomic layer deposition

Figure 2 shows that the sheet resistance of the deposited films decreases from 0.9 kΩ/ to 0.7 kΩ/ with increasing the aluminum dopant concentration from 1 at.% to 5 at.%. Then, it increases for ...

Construction of fluorescent anodic aluminum oxide films …

The aluminum alloy 5052 in the form of 70 × 38 × 0.7 mm plates was used in the fabrication process. The preparation of anodic films: The degreasing treatment was achieved in 30 g/L TOP ALCLEAN 161 (weak alkaline type cleaner provided by Okuno Chemical Industries CO., LTD) solution for 5 min at 60 °C.

An aluminum oxynitride film

The thickness of the film was 74 nm. As shown in Fig. 1, the deposited film is formed of atomic nitrogen, oxygen and aluminum, and so we called it an aluminum oxynitride (AION) film. The atomic concentrations of nitrogen, oxygen and aluminum in this film were 25.7;,. 31.4, and 41.4"10 respectively. In addition, there was the atomic …

Influence of oxygen concentration in sputtering gas on …

The authors have investigated the influence of oxygen concentration in sputtering gas on the piezoelectric response of aluminum nitride (AlN) thin films prepared on silicon substrates.

Optimizing high concentration Scandium Aluminum Nitride …

Abstract: Adding Scandium (Sc) to the aluminum nitride (AlN) is widely used to significantly increase coupling coefficient in Piezo-MEMS devices [1], [2], [3] and …

Vertical Etching of Scandium Aluminum Nitride Thin Films …

The experimental results of etching approximately 730 nm of Sc x Al 1 − x N (x = 0.125, 0.20, 0.40) thin films show that the etch rate decreases with increasing scandium content. Nevertheless, sidewall verticality of 85°~90° (±0.2°) was maintained for all Sc compositions. Based on these experimental outcomes, it is anticipated that this ...

Nickel-free sealing technology for anodic oxidation film of aluminum …

Different additives were added into the potassium fluorozirconate solution to prepare different nickel-free sealing reagents, with which the anodic oxidation film of aluminum alloy was sealed at room temperature. The phosphor chromic acid weight loss method was used to evaluate the sealing effects. Using electron scanning microscopy …

Optical, electrical, and structural properties of sputtered aluminum

All aluminum films were deposited at a rate between 0.4 and 0.6 nm/s. Film thickness was targeted to be 300 nm. This was confirmed using a stylus profilometer. ... The electron concentrations for the Al–Cu films in Fig. 6 are roughly 2 electrons/atom, and decreased slightly as a function of copper content. Thus the effective free electron ...

Ferroelectric C-Axis Textured Aluminum Scandium Nitride Thin Films …

Abstract. We report on the properties of Aluminum Scandium Nitride (AlScN) thin films deposited by pulsed-DC co-sputtering. We present the impact of the nitrogen-to-argon gas ratio on the crystal growth orientation, film stress, surface roughness, scandium concentration, and deposition rate of 760-860 nm thick AlScN thin films on Ti/Pt (111).

Chemical–mechanical polish of aluminum alloy thin films: …

Al alloy thin films with various Si and Cu concentrations were sputter-deposited on thermal oxide at a substrate temperature of 250 °C. All samples were deposited to a thickness of 1 μm. Unless stated otherwise, slurries for CMP experiments were based upon 0.05-μm de-agglomerated α-Al 2 O 3 abrasive particles with various …

Effect of oxalic acid concentration on the formation of anodic aluminum

Most anodic aluminum oxide (AAO) or porous anodic aluminum (PAA) films were fabricated using the potentiostatic method from high-purity (99.999%) aluminum films at low temperatures of 0–10°C to avoid dissolution effects at room temperature (RT). In this article, the fabrication of AAO or PAA film from commercial purity (99%) aluminum at …

High concentration of organic solvents in aluminum MAO: …

In fact, in high concentration polyethylene glycol electrolyte, the discharge phenomenon appeared earlier at high voltage. The number of arcs increases significantly and a large amount of gas precipitates from the metal surface, resulting in an increase in the number of pores on the surface of the oxide film.

Sensing the toxic aluminum cations in acidic soils | Cell …

Aluminum (Al) toxicity is a major factor limiting crop production on acidic soils because even low concentrations of soluble aluminum cations (Al 3+) can inhibit root growth in important crops ...