• 0
  • 0

Superconductivity of MgB2

Overview of MgB2
Magnesium diboride MgB2 is an ionic compound having a hexagonal crystal structure. It is an intercalation compound with alternating layers of magnesium and boron.

Magnesium diboride will be transformed into a superconductor at an absolute temperature of 40K (equivalent to -233°C). Its actual working temperature is 20~30K. To reach this temperature, we can use liquid neon gas, liquid hydrogen or a closed-cycle refrigerator to complete the cooling. Different from the current industry that uses liquid helium to cool replacement alloys (4K), these methods are simpler and more economical. Once carbon or other impurities, magnesium diboride, or current are passed in the magnetic field, the ability to maintain superconductivity is as much as ≤ alloy, or even better.
Application field
Superconducting magnets, transmission lines and sensitive magnetic field detectors.
Storage conditions
The product should be sealed and stored in a cool and dry room. Exposure to the air should be avoided to prevent moisture agglomeration, which will affect the dispersion performance and affect the use. Pressure should be avoided.
Why is MgB2 superconducting?
Superconductors, as the name suggests, are conductors that do not dissipate energy after passing current. After the Dutch scientist Onnes discovered the superconductivity of mercury in 1911, people only increased the transition temperature to 23K (about minus zero) in the following seventy years. 250℃). In early March 2001, Japanese scientists reported that the binary material magnesium diboride (MgB2) exhibited superconducting properties at around 39K. Boron atoms have fewer valence electrons than carbon, so not all σ bands are occupied. This means that the lattice vibration in the plane is much greater, which leads to the formation of strong electron pairs.
"Materials Science and Engineering: B": The use of ultrasonic technology can reduce the cost of magnesium diboride superconductors
Researchers at Shibaura Institute of Technology (SIT) in Japan have developed a Technology that uses ultrasonic treatment to increase the critical current density (Jc) of bulk MgB2.
The specific method is to dissolve cheap commercial boron in hexane and use ultrasound to thoroughly disperse the solute. Once the hexane is evaporated and removed, very fine boron powder can be obtained, which is then sintered with magnesium to produce magnesium boride.
The researchers produced high-quality bulk magnesium boride, most of which did not contain oxidizing impurities. Compared with the non-sonicated sample used as a reference, the Jc value increased by 20%, depending on the sonication time used.
In addition, the results of scanning electron microscopy and energy dispersive X-ray spectroscopy revealed a second mechanism that may lead to enhancement of Jc. The team noticed a layered structure covering the boron-deficient pore walls, which appeared to be a magnesium boron oxide coating.
The researchers said, "This will help reduce the difficulty and cost of superconductor-based technology, and make it easier for the general public, especially in the medical field, to use these technologies."
TRUNNANO (aka. Luoyang Tongrun Nano Technology Co. Ltd.) is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and MgB2 powder. As a leading nanotechnology development and powder manufacturer, Luoyang Tongrun dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are looking for MgB2 powder, please send an email to: [email protected].
OR go to the following link:

Inquery us

Our Latest News

Global Superplasticizer market trend 2025-2030 The Effect of Superplasticizer by Newsinwin-style

Adding high-efficient water reducing agent is the most direct and effective means to adjust and optimize the ratio of concrete and improve and strengthen the properties of concrete, which can meet the requirements of most concrete construction at pre…

Global WC powder market trend 2022-2029 What is tungsten carbide? by Newsinwin-style

The spread of the novel coronavirus is taking a direct hit on the operations of airlines in Asia. About 500,000 flights taking off and landing in mainland China have been canceled since January, according to aviation information company Cerium. Touri…

Global in625 powder market trend 2024-2029 What is In625 Used For? by Newsinwin-style

Prices in the national electricity market averaged $87 per megawatt-hour in the first three months of the year, above the level promised by the federal government. Wholesale electricity prices for industry and large businesses have already exceeded t…