By Dr.Zhang from Nanjing Normal University | 16 July 2020 | 0 Comments
Basic Information about Magnesium Diboride that You Need to Know!
Basic Information about Magnesium Diboride that You Need to Know!
What is Magnesium diboride?
Magnesium diboride is an inorganic compound of magnesium b2 molecular formula. It is a dark gray insoluble solid. The compound catches people's attention because it becomes superconducting at 39 degrees Kelvin, one of the highest known transition temperatures (Tc) of any superconductor. In terms of composition, magnesium boride is significantly different from most Tc-like superconductors characterized by transition metals.
The structure of MgB2.
Magnesium boride has the simple hexagonal Albany structure found in borides. It contains graphitic boron layers which is separated by tightly packed hexagonal magnesium layers.
The superconductivity of MgB2.
The superconductivity of magnesium diboride was discovered in 2001. The critical temperature (Tc) of magnesium diboride is 39k (-234°C;-389°F), which is the highest among conventional superconductors. This is unusual in traditional (phonon-mediated) superconductors. Its electron structure is such that there are two kinds of electrons at the Fermi level that behave very differently, one of which is more superconducting than the other. This is inconsistent with the usual phonon-mediated theory of superconductivity, which postulates that all electrons behave in the same way. The theoretical understanding of the properties of magnesium boride has been achieved by modeling the two energy gaps. In 2001, it was thought to behave more like a metal than a copper superconductor.
Experts’ research on magnesium diboride.
In the August 15 issue of the journal Nature, theorists report that magnesium diboride's peculiar characteristics come from two different groups of electrons -- nicknamed "red" and "blue" -- that form different kinds of bonds between the atoms of the material. While interpreting conflicting observations, their calculations led to predictions later made experimentally. In addition, they raise the possibility of creating entirely new materials with similar electronic structures.
Magnesium diboride superconductors will play a big role in SRF cavity.
In the past 15 years, MgB2 based power cables, microwave devices, and commercial MRI machines emerged and the next frontier are superconducting radio frequency (SRF) cavities. SRF cavity is one of the main accelerator technologies. In the SRF cavity, microwaves are used to generate electric fields and accelerate particle beams. Compared with other accelerator technologies, SRF cavity accelerator has the advantages of low loss, high acceleration gradient and continuous particle beam acceleration. However, the current SRF cavity is made of a high purity chunk of niobium and works at 2k in superfluid helium. SRF cavity accelerators are very expensive to build and operate. The demand for SRF cavity accelerators has been growing rapidly over the past decade. Therefore, a lot of work has been put into improving SRF cavity performance and reducing cost. In 2010, the acceleration gradient of the nbb-based SRF cavity exceeded 50 MV/m. The surface magnetic field in the cavity is about 1700 Oe, close to the critical thermodynamic field of Nb. Therefore, new materials and technologies are needed to improve the acceleration gradient of future SRF cavity accelerators. Among all the proposed methods, coating SRF internal surface with magnesium boride film is a promising method, which may improve the acceleration gradient and operating temperature of SRF internal accelerator.
TRUNNANO (Luoyang Trunnano Tech Co., Ltd ) is a professional Magnesium diboride manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality Magnesium diboride, please feel free to contact us and send an inquiry.
What is Magnesium diboride?
The structure of MgB2.
The superconductivity of MgB2.
The superconductivity of magnesium diboride was discovered in 2001. The critical temperature (Tc) of magnesium diboride is 39k (-234°C;-389°F), which is the highest among conventional superconductors. This is unusual in traditional (phonon-mediated) superconductors. Its electron structure is such that there are two kinds of electrons at the Fermi level that behave very differently, one of which is more superconducting than the other. This is inconsistent with the usual phonon-mediated theory of superconductivity, which postulates that all electrons behave in the same way. The theoretical understanding of the properties of magnesium boride has been achieved by modeling the two energy gaps. In 2001, it was thought to behave more like a metal than a copper superconductor.
Experts’ research on magnesium diboride.
In the August 15 issue of the journal Nature, theorists report that magnesium diboride's peculiar characteristics come from two different groups of electrons -- nicknamed "red" and "blue" -- that form different kinds of bonds between the atoms of the material. While interpreting conflicting observations, their calculations led to predictions later made experimentally. In addition, they raise the possibility of creating entirely new materials with similar electronic structures.
Magnesium diboride superconductors will play a big role in SRF cavity.
TRUNNANO (Luoyang Trunnano Tech Co., Ltd ) is a professional Magnesium diboride manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality Magnesium diboride, please feel free to contact us and send an inquiry.
Leave a Reply
Your email address will not be published.Required fields are marked. *