Iron tetraboride (FeB4) is a superhard superconductor (Tc < 3K) consisting of iron and boron. Iron tetraboride does not occur in nature and can be created synthetically. Its molecular structure was predicted using computer models.
It has been shown that under pressure, iron tetraboride transforms into a transparent phase with lower conductivity, converting from a superconductor to a semiconductor. Another study that pressurised the compound up to 1 TPa identified that it further becomes a conductor after its semiconducting phase.
See also Binghamton University European Synchrotron Radiation Facility
References
External links First fully computer-designed superconductor First computer-designed superconductor created Scientists create first computer-designed superconductor X-rays reveal the first designer superconductor Viewpoint: Materials Prediction Scores a Hit