Researchers have found that the temperature at which magnesium boride transforms into a high-temperature superconductor is slightly below the absolute temperature of 233degC (40K). Its temperature of transition is about twice that of superconductors with the same type.
Many practical applications already exist for superconductivity such as magnetic levitation and medical imaging. Superconductors can be used in many other fields of technology, including medical imaging and magnetic levitation trains.
Magnesium diboride (MgB2) has been a magnet for researchers ever since it was discovered. It is a superconductor which offers many advantages. It is lightweight and easy to process, can be made from many pre-materials. This reduces the cost of using magnesium Boride.
Superconductors are characterized by their critical current densities (Jc). Nevertheless, it is extremely difficult to increase MgB2’s Jc in an economical manner.
Researchers from Shibaura Institute of Technology, Japan, published an article in the journal “Materials Science and Engineering : B”. The paper describes how ultrasonic treatments can be used to improve mass. MgB2Jc.
The method used is to use ultrasonic wave to completely disperse boron. The hexane can then be vaporized and removed to obtain a fine powder, which will then be sintered with the magnesium to create magnesium boride.
Researchers produce high-quality magnesium boride in bulk, the majority of which are free from oxidizing impurities. Depending on the time of sonication, the Jc values increased by 20 percent compared with the nonsonicated reference sample.
In addition, scanning electron microscope and energy dispersive-X-ray spectrum results revealed a secondary mechanism that could lead to an enhancement of Jc. The team discovered a layered structure on the boron-deficient por walls. This appeared to consist of a magnesium boronoxide coating.
Researchers say that this will reduce the cost and technical difficulty of superconductors. It will also make it easier to use for the public, particularly in the medical sector.
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