Gadolinium-silicon-germanium alloy
Gadolinium-silicon-germanium alloy (Gd5Ge2Si2, CAS: 189118-23-8) is a highly specialised intermetallic compound with a molecular weight of 987.70 g/mol. This material is primarily researched for its significant giant magnetocaloric effect, making it a candidate for advanced magnetic refrigeration technologies. Supplied by Tech Serve Solutions, this alloy is suitable for materials science and physics research.
- IUPAC
- Gadolinium germanium silicide
- Synonyms
- Gadolinium germanium silicide

Magnetic Refrigeration Research
This alloy exhibits a giant magnetocaloric effect, making it a key material for research into next-generation magnetic refrigeration systems. Its properties are investigated for potential applications in energy-efficient cooling technologies.
Materials Science Investigations
Gadolinium-silicon-germanium alloy is utilised in materials science to study advanced magnetic materials. Its unique composition allows for exploration of magnetocaloric phenomena and development of novel functional materials.
Physics Research
The compound serves as a subject of study in condensed matter physics, particularly concerning magnetic phase transitions and their thermodynamic consequences. Research focuses on understanding and harnessing its magnetic properties.
| Molecular weight | 987.70 |
|---|---|
| Linear formula | Gd5Ge2Si2 |
| Assay | ≥99% trace metals basis |
| Density | 5.7 g/mL at 25 °C |
| Application | This material is used for research in the area of magnetic refrigeration. Alloy with a giant magnetocaloric effect. |
| Melting point | 1675 °C |


Hazard statements
- H261In contact with water releases flammable gas
- H315Causes skin irritation
- H319Causes serious eye irritation
Precautionary statements
- P231Handle under inert gas
- P305IF IN EYES
- P422
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F |
| Risk statements (R) | 15 |
| Safety statements (S) | 43 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Gadolinium-silicon-germanium alloy used for?
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Gadolinium-silicon-germanium alloy (Gd5Ge2Si2, CAS: 189118-23-8) is primarily used for research in magnetic refrigeration due to its giant magnetocaloric effect. It is also studied in materials science and condensed matter physics.
What is the CAS number and formula for Gadolinium-silicon-germanium alloy?
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The CAS number is 189118-23-8 and the linear formula is Gd5Ge2Si2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Gadolinium-silicon-germanium alloy with an assay of ≥99% trace metals basis. This product is intended for research and development purposes and is not represented as USP, EP, or BP grade.
How should Gadolinium-silicon-germanium alloy be handled safely?
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Warning: This material is pyrophoric (H261) and can cause skin (H315) and eye irritation (H319). Handle with appropriate personal protective equipment, including eyeshields, gloves, and an N100 respirator. Store under inert gas as per P231 + P232. Consult the Safety Data Sheet for full handling instructions.
Can I request a sample or a quote for this material?
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Yes, you can request a sample or a quote. Please contact our sales team via the website or by phone, and they will be happy to assist you with your inquiry.
How is Gadolinium-silicon-germanium alloy packed and shipped?
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Gadolinium-silicon-germanium alloy is carefully packed to ensure safe transit and is available for export globally. Specific packaging details can be provided upon request, adhering to international shipping regulations for hazardous materials.
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