MSDS File
Introduction
Strontium Evaporation Materials (Sr) are high-purity alkaline earth metal sources used in physical vapor deposition (PVD) processes for the preparation of functional oxide films, optoelectronic layers, and advanced ceramic coatings. Due to its strong chemical reactivity and ability to form stable oxides (such as SrO and complex perovskites), strontium is widely utilized in research and industrial thin film applications.
In vacuum deposition systems, controlled strontium evaporation enables the fabrication of oxide semiconductors, ferroelectric materials, superconducting compounds, and transparent conductive films. High material purity and careful handling are essential to ensure reproducible film composition and minimize contamination.
Detailed Description
Strontium (Sr) is a soft, highly reactive metal with a melting point of approximately 777 °C. Because it reacts readily with oxygen and moisture, strontium evaporation materials are typically stored and shipped under inert atmosphere or sealed packaging to maintain surface integrity.
Available forms include:
Small pieces or chunks
Granules
Distilled rods
Custom-cut slugs
High purity grades (commonly 99.5% – 99.9% or higher upon request) are used to reduce impurities that may influence thin film electrical and structural performance.
Key characteristics of Strontium Evaporation Materials include:
Moderate melting point suitable for thermal evaporation
High reactivity, ideal for reactive oxide film formation
Strong oxygen affinity for controlled oxide growth
Compatibility with co-evaporation processes
Strontium is often co-evaporated with transition metals (e.g., Ti, Cu, Fe) to form complex oxides such as SrTiO₃, SrCuO₂, and other perovskite-type materials. In reactive evaporation, precise oxygen partial pressure control is critical to achieving correct stoichiometry.
Applications
Strontium Evaporation Materials are widely used in:
Perovskite oxide thin film deposition (e.g., SrTiO₃)
Superconducting oxide research
Ferroelectric and dielectric films
Optical coatings and functional ceramics
Semiconductor and oxide electronics research
Advanced academic R&D laboratories
Strontium-containing films are frequently grown on lattice-matched substrates for epitaxial research applications.
Technical Parameters
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Chemical Symbol | Sr | Defines alkaline earth metal behavior |
| Purity | 99.5% – 99.9%+ | Higher purity improves film consistency |
| Form | Pieces / Granules / Rods | Matches evaporation source configuration |
| Melting Point | ~777 °C | Suitable for thermal evaporation |
| Density | ~2.64 g/cm³ | Relevant for deposition rate calculation |
| Storage | Inert or vacuum sealed | Prevents oxidation and moisture reaction |
Custom sizing and packaging can be arranged based on deposition system requirements.
Comparison with Related Alkaline Earth Metals
| Material | Key Advantage | Typical Application |
|---|---|---|
| Strontium (Sr) | Forms stable perovskite oxides | Oxide electronics & superconductors |
| Calcium (Ca) | Lighter, lower melting point | Reactive thin films |
| Barium (Ba) | Larger ionic radius | Ferroelectric and dielectric materials |
| Magnesium (Mg) | High vapor pressure | Optical coatings |
Compared to calcium and magnesium, strontium offers more favorable lattice compatibility in many perovskite oxide systems.
FAQ
| Question | Answer |
|---|---|
| Is strontium suitable for thermal evaporation? | Yes, due to its moderate melting point, thermal evaporation is commonly used. |
| Does it require special handling? | Yes, it must be protected from air and moisture to prevent oxidation. |
| Can it be used in co-evaporation systems? | Yes, it is frequently combined with transition metals to form complex oxides. |
| Is reactive oxygen control necessary? | Yes, oxygen partial pressure control is critical during oxide film growth. |
| Do you provide traceability documents? | Yes, certificates and batch traceability are available upon request. |
Packaging
Our Strontium Evaporation Materials are meticulously tagged and labeled externally to ensure efficient identification and maintain high standards of quality control. We take great care to prevent any potential damage during storage and transportation. Materials are typically vacuum-sealed or packed under inert gas to minimize oxidation before use.
Conclusion
Strontium Evaporation Materials (Sr) provide a reliable source for the deposition of functional oxide thin films and advanced perovskite materials. With controlled purity, tailored forms, and secure packaging, they support both research-scale experiments and industrial thin film production.
For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.
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