Gadolinium oxide
Properties
Chemical formula: Gd₂O₃
Name: Gadolinium(III) oxide / gadolinium oxide
CAS No.: 12064-62-9
Molar mass: 362.50 g/mol
Density: 7.41 g/cm³
Melting point: approx. 2420 °C
Color: white
Form: fine powder
Solubility: insoluble in water, soluble in mineral acids
Gadolinium oxide (Gd₂O₃), also known as gadolinium(III) oxide, is an inorganic compound belonging to the group of rare-earth oxides. It is typically supplied as a fine, odorless white powder and is characterized by very high thermal stability.
Gadolinium oxide is insoluble in water but dissolves readily in mineral acids, forming the corresponding gadolinium(III) salts. With a melting point of approximately 2420 °C, Gd₂O₃ is suitable for advanced materials exposed to demanding high-temperature conditions.
The Gd³⁺ ion has a particularly high magnetic moment due to its seven unpaired electrons. Natural gadolinium also has an exceptionally high effective thermal-neutron absorption cross-section of approximately 49,000 barns. These magnetic and neutron-absorbing properties make gadolinium compounds important in nuclear technology, medical technology and advanced materials.
Gadolinium oxide is commonly produced by calcining gadolinium hydroxide, oxalate or carbonate at temperatures above 800 °C. Gd₂O₃ is also used as a functional additive in advanced ceramics, phosphor materials and solid oxide fuel cell systems.
The element gadolinium is used both as gadolinium metal and in the form of specialized compounds. Gadolinium and its compounds are relevant for nuclear technology, medical diagnostics, electronics, lighting technology, high-performance ceramics and materials research.
Would you like to buy gadolinium oxide? Auremo offers gadolinium oxide, gadolinium metal and other rare metals. The gadolinium price, gadolinium metal price and gadolinium price per kg primarily refer to metallic gadolinium, while the price of gadolinium oxide or Gd oxide depends on purity, particle size, order quantity and delivery conditions.
Advantages
• Exceptionally effective thermal-neutron absorption
• Strong paramagnetic properties
• Very high thermal stability
• Physical stability at temperatures above 2400 °C
• Good chemical stability
• Suitable for phase and microstructure stabilization in advanced ceramics
• Important precursor for other gadolinium compounds
• Suitable for specialty electronic, optical and energy materials
Applications
• Nuclear technology
• Neutron-absorbing and control materials
• Gadolinium-containing materials for reactor technology
• Precursor for gadolinium complexes
• Medical and diagnostic technologies
• Phosphors for displays and lighting applications
• X-ray screens and functional optical materials
• High-performance technical ceramics
• Solid oxide fuel cells (SOFC)
• Modification of zirconia-based ceramics
• Production of gadolinium compounds
• Materials science and research
Auremo offers a wide range of gadolinium, gadolinium oxide and other rare metals at competitive prices. If you have any questions about Gd₂O₃, gadolinium metal, available purity grades, particle sizes or delivery conditions, please contact us directly.
