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693510

Sigma-Aldrich

Gadolinium-silicon-germanium alloy

Gd5Si2Ge2, ≥99% trace metals basis

Synonym(s):

Gadolinium germanium silicide

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About This Item

Linear Formula:
Gd5Ge2Si2
CAS Number:
Molecular Weight:
987.70
MDL number:
UNSPSC Code:
11101711
PubChem Substance ID:
NACRES:
NA.23

assay

≥99% trace metals basis

form

powder and chunks

composition

Gadolinium, 79.5 wt. %
Germanium, 14.8 wt. %
Silicon, 5.7 wt. %

mp

1675 °C

density

5.7 g/mL at 25 °C

SMILES string

[Si].[Ge].[Gd]

InChI

1S/Gd.Ge.Si

InChI key

LVKVKSQVTJLPDE-UHFFFAOYSA-N

Application

This material is used for research in the area of magnetic refrigeration. Alloy with a giant magnetocaloric effect.

Physical properties

Curie Temperature: ~270 K

Legal Information

Sold under license to US Patents 5,887,449 and 5,743,095 for use in magnetic refrigeration.

pictograms

Flame

signalword

Warning

hcodes

Hazard Classifications

Water-react 3

Storage Class

4.3 - Hazardous materials which set free flammable gases upon contact with water

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges


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Articles

Today, near-room-temperature refrigeration is almost entirely based on a vapor-compression refrigeration cycle.

Solid state and materials chemistry have made a tremendous impact and have experienced growth in recent years, particularly for rare earthcontaining materials.

The application of magnetism and magnetic materials pervades our modern civilization in the form of electrical power, communications and information storage.

The unique properties of the rare-earth elements and their alloys have brought them from relative obscurity to high profile use in common hightech applications.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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