Raman Spectroscopy Results (IMAGE) Institute for Basic Science Caption Raman spectroscopy on bulk (top, left) and 2-D (top, right) FePS3 was used to calculate changes in vibration and indirectly magnetization. New peaks due to iron and magnetic ordering (P1 and P2) appear in the graph at temperatures below 118 Kelvin, the temperature below which the spins (red and blue arrows) become ordered with a zigzag pattern and the material becomes antiferromagnetic. Credit IBS Usage Restrictions None 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.