It would seem that almost everything is known about gold. However, the researchers managed in the laboratory to artificially create a new type of this precious material. They needed excess pressure, which changed the structure and properties of gold.
Scientists at Lawrence Livermore national laboratory and the Carnegie Washington Institute found that gold is able to change its structure if it is instantly put high pressure. In this case, a well-known volume-centered cubic structure is transformed into a more open crystal structure.
During the research, gold was exposed to extreme pressure — up to two-thirds of the pressure found in the center of our planet. The structure of the gold the beginning of the changes at 220 GPa, the value that is greater than atmospheric pressure of the Earth is 2.2 million times. An important part of the experiment was the effect of this force on the sample for a fraction of a second.
The precious metal began to melt when compressed to 250 GPA. Studies were carried out at a maximum pressure of 330 GPA. The authors of the experiment noted that the discovery is of great importance in the study of the behavior of gold in extreme conditions since previously published works did not take this into account.