Glassiness of high-entropy alloys. (IMAGE) Tokyo Metropolitan University Caption The vibrational density of states, the number of ways in which the atomic lattice can vibrate at certain frequencies. In HEAs, the curve broadens into a continuous curve. This is typical of glassy materials. 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.