Tc dependence on pressure and entropy. (IMAGE) Tokyo Metropolitan University Caption (a) Tc vs pressure. Alloys with more potential occupants for their metal sites, specifically the two high-entropy alloys (HEAs), have a Tc which stops changing with higher pressure. (b) Gradient in Tc vs. pressure. Alloys with a high entropy of mixing have a gradient value closer to zero, meaning that Tc hardly changes with changing pressure. Credit Tokyo Metropolitan University Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.