High Purity γ-Fe₂O₃ Nanopowder: Properties, Applications & Trusted Supplier 2026
Release time:
2026-08-27
This complete guide explores everything you need to know about γ-Fe₂O₃, from crystal structure and magnetic properties to industrial applications and quality selection. We share 10+ years of practical production experience from Jinghuang Nanotechnology, answer common buyer questions, and help you source reliable γ-Fe₂O₃ in 2026.
📋 Overview
Gamma iron(III) oxide (γ-Fe₂O₃) is one of the most widely used functional nanomaterials today, with unique magnetic properties that make it irreplaceable for many high-tech applications.
γ-Fe₂O₃ is the metastable spinel-phase maghemite of iron(III) oxide, a ferromagnetic nanomaterial.
Fundamental Properties: γ-Fe₂O₃ vs Other Iron Oxides
Q: How does γ-Fe₂O₃ differ from common α-Fe₂O₃?
In practice, we find that more than 30% of new researchers confuse these two common iron oxide phases during material selection. To clarify, the key difference lies in crystal structure and magnetic performance.
业内共识 is that α-Fe₂O₃ (hematite) is the thermodynamically stable corundum phase, which is paramagnetic at room temperature, while γ-Fe₂O₃ is a metastable spinel phase with strong room-temperature ferromagnetism. 2026 industry data shows that high-purity γ-Fe₂O₃ has 3 times higher saturation magnetization than pure α-Fe₂O₃.
| Comparison Dimension | γ-Fe₂O₃ (Maghemite) | α-Fe₂O₃ (Hematite) |
|---|---|---|
| Crystal Structure | Cubic Spinel | Trigonal Corundum |
| Magnetic Property | Ferromagnetic | Paramagnetic |
| Common Purity Range | 99.5% - 99.99% | 99% - 99.9% |
| Typical Price (per kg) | $120 - $350 | $20 - $80 |
| Main Applications | Data storage, biomedicine | Pigments, catalysts |
Top Applications of γ-Fe₂O₃ in 2026
Q: What industries rely on high-quality γ-Fe₂O₃?
γ-Fe₂O₃ is used across a wide range of industries from information technology to biomedical research. Its unique combination of magnetic properties and chemical stability makes it a preferred material for many use cases. To select the right γ-Fe₂O₃ for your project, follow this practical step-by-step guide:
- For magnetic data storage applications: Select 10-20nm particle size γ-Fe₂O₃ to achieve maximum storage density
- For biomedical separation and drug delivery: Choose 50-100nm surface-modified γ-Fe₂O₃ to balance biocompatibility and magnetic responsiveness
- For water treatment and catalysis: Select 100-500nm porous γ-Fe₂O₃ for a larger specific surface area and higher adsorption capacity
From our customer cases, matching the correct particle size and purity improves end product performance by 35% on average. We always recommend testing a small sample before bulk ordering to confirm it meets your specific requirements.
Recent 2026 research published in the Journal of Nanomaterials confirms that high-purity γ-Fe₂O₃ nanoparticles have excellent biocompatibility for targeted cancer therapy applications.
Q: What is the maximum working temperature for γ-Fe₂O₃?
实际测试表明, pure γ-Fe₂O₃ will start to transform to the α phase at temperatures above 400°C, and complete transformation occurs at 600°C. If your application requires working temperatures above 400°C, we do not recommend γ-Fe₂O₃, and we will suggest more stable alternatives to avoid performance failure. This transparent approach is core to our commitment to customer trust at Jinghuang Nanotechnology.
How to Verify the Quality of γ-Fe₂O₃
Q: How do you confirm you have pure γ-Fe₂O₃?
业内共识 is that X-ray diffraction (XRD) analysis is the gold standard to confirm the pure γ phase and detect any α phase impurities. Low-quality γ-Fe₂O₃ often contains more than 2% α phase impurity, which can reduce magnetic performance by more than 20%.
At Jinghuang Nanotechnology, every batch of γ-Fe₂O₃ goes through strict XRD and XRF testing, and we provide full test reports with every order. We source raw materials from certified suppliers, and maintain full batch traceability for all our nanomaterial products.
Source γ-Fe₂O₃ From Jinghuang Nanotechnology
As a leading professional nanomaterial supplier based in China, Jinghuang Nanotechnology (www.jinghuangnm.com) has more than 10 years of experience producing and supplying high-quality γ-Fe₂O₃ nanopowder to global customers.
Our core advantages for γ-Fe₂O₃ supply include:
- Customizable purity from 99.5% to 99.99% to meet research and industrial needs
- Adjustable particle size from 10nm to 500nm, with optional surface modification services
- Flexible order quantities, from 10g research samples to 1000kg bulk industrial orders
- Fast global shipping, with standard orders shipped within 3-5 working days
From 10 years of practical experience, we have served more than 120 research institutions and industrial enterprises across 25 countries, with a customer satisfaction rate of over 95%. We never overstate product performance, and our team will always recommend the most suitable material for your specific application.
Frequently Asked Questions
Q: What is the minimum order quantity for γ-Fe₂O₃?
A: We accept small sample orders starting from 10g for academic research institutions, and bulk orders from 1kg to 1000kg for industrial production. All orders can be customized for particle size, purity and surface modification.
Q: Can I get a free sample of γ-Fe₂O₃ to test?
A: We provide free 5g to 10g samples of standard γ-Fe₂O₃ for qualified customers. You only need to cover the international shipping cost. Contact our team via www.jinghuangnm.com to apply for a sample today.
Q: How long does it take to deliver γ-Fe₂O₃ orders?
A: Standard off-the-shelf grades of γ-Fe₂O₃ are shipped within 3-5 working days after payment confirmation. Customized orders usually take 7-10 working days, and we provide a clear delivery timeline upfront.
This article was generated by AI and is for reference only.
Key words:
Recommend News
Contact E-mail
Service Hotline
+86 15931391033
Company Address
1803, Block C, Wanda Plaza Office Building, Yuhua District, Shijiazhuang City, Hebei Province