Product Overview
Chromium-doped Silicon Monoxide Sputtering Target (SiO/Cr) is a ceramic sputtering target used to deposit composition-specific oxide thin films. Compared with metallic targets, oxide targets are typically more sensitive to density, porosity, brittleness, thermal shock, and bonding design. In practice, target microstructure, thickness, cooling conditions, and the chosen sputtering mode can all affect arc stability, particle generation, and deposited-film performance.
Material and Deposition Characteristics
RF magnetron sputtering is commonly considered for insulating or semiconducting oxide targets, while sufficiently conductive formulations may allow alternative power modes in some systems. Target density and microstructural uniformity matter because pores, cracks, and local inhomogeneities can contribute to unstable plasma, particles, or target damage. For brittle ceramics, bonded assemblies and gradual power ramping are often worth evaluating.
Technical Data
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Chemical Composition | SiO with Cr dopant | Controls film functionality |
| Chromium Content | Custom (wt% or at%) | Tunes electrical & mechanical properties |
| Purity | 99.9% – 99.99% | Ensures film uniformity |
| Target Diameter | 25 – 300 mm (custom) | Fits standard sputtering systems |
| Thickness | 3 – 6 mm (custom available) | Influences sputtering stability |
| Density | ≥ 95% of theoretical | Promotes uniform erosion |
| Deposition Method | RF Magnetron Sputtering | Suitable for ceramic composites |
| Material | Key Advantage | Typical Application |
|---|---|---|
| SiO/Cr | Improved adhesion & stability | Optical & functional films |
| Pure SiO | High optical transparency | Optical coatings |
| SiO₂ | Chemical stability | Insulating layers |
| Cr Metal | Strong adhesion, conductivity | Adhesion layers |
| Question | Answer |
|---|---|
| Can the chromium content be customized? | Yes, Cr concentration can be adjusted based on application needs. |
| Is RF sputtering required? | RF sputtering is recommended due to the ceramic nature of SiO/Cr. |
| Can this target replace separate SiO and Cr layers? | In many designs, SiO/Cr enables simplified multilayer structures. |
| Are small research targets available? | Yes, lab-scale sizes are supported. |
| How is the target packaged? | Vacuum-sealed with protective cushioning to prevent contamination. |
Typical Thin-Film Applications
- Dielectric, insulating, optical, magnetic, protective, or functional ceramic thin films
- Semiconductor, sensor, photonic, and multilayer coating research
- Applications where oxide composition, density, and process stability affect film performance
Target Configuration and Ordering Considerations
When requesting a quotation, provide target diameter or rectangular dimensions, thickness, purity or composition, required quantity, and whether a backing plate or bonded assembly is needed. For brittle ceramic or compound targets, it is useful to specify the cathode model, backing-plate material, preferred bonding method, operating power if known, and any density, tolerance, or inspection-document requirements. TFM can review drawings, old-target photos, and application details when custom dimensions are required.
Frequently Asked Questions
Is Chromium-doped Silicon Monoxide better suited to RF or DC sputtering?
RF magnetron sputtering is commonly considered for insulating or semiconducting oxide targets. If a specific formulation is sufficiently conductive, other modes may also be possible, but the equipment and target properties should be confirmed.
Why is density important for a Chromium-doped Silicon Monoxide target?
Density and microstructural uniformity affect erosion stability, thermal behavior, and particle risk. Pores, cracks, or local density variations can contribute to unstable sputtering and target damage.
Should a Chromium-doped Silicon Monoxide target be bonded to a backing plate?
Bonding is often useful for brittle oxide targets because it can improve mechanical support and heat transfer. The backing material and bonding method should be chosen according to target size, thickness, and operating conditions.
Will the deposited film always have the same composition as SiO/Cr?
Not always. Film composition can be affected by preferential sputtering, reactive gas, substrate temperature, re-sputtering, and chamber conditions. Composition-sensitive films should be verified after deposition.
How should power be ramped on a brittle Chromium-doped Silicon Monoxide target?
A conservative power ramp and stable cooling are generally advisable. The exact operating procedure should follow the target size, bonding condition, cathode design, and supplier recommendations rather than a universal wattage.
What information should I provide when ordering Chromium-doped Silicon Monoxide?
Provide formula or composition, purity, dimensions, quantity, backing and bonding requirements, cathode model or drawing, and any density, tolerance, or inspection requirements.
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