Spin Transition (IMAGE) Carnegie Institution for Science Caption Rearrangement of the electrons in iron upon pressure-induced spin transition in carbonates, courtesy of Sergey Lobanov. Credit Sergey Lobanov Usage Restrictions With credit License Licensed content 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.