Magnetic spins that ‘freeze’ when heated (IMAGE) Radboud University Nijmegen Caption At cooler temperatures, the spins in the material form random patterns, where each pattern whirls like a helix with a particular twist. When heating up the material, the spins choose one of the particular helix patterns, a phenomenon that normally occurs when the temperature decreases in magnetic materials. Credit Radboud 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.