Doping Iron-Platinum Alloys with Copper (image) University of California - Davis Caption These atomic force microscope images show how adding copper to an alloy of iron and platinum changes the crystal structure and magnetic properties, important for data storage. Credit Kai Liu, UC Davis Usage Restrictions May be used with acknowledgement of the source. 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.