Synthesis,Crystal Structure,and Magnetic Properties of the Semihard Itinerant Ferromagnet RhFe_3N

摘要

Since the invention of magnetic data recording by Poulsen more than a century ago and the development of the first magnetic hard disc by the IBM company,there has always been a persistent demand for magnetic storage devices.At present,the capacity of hard discs doubles every year and,fortunately enough,this expansion outpaces the performance enhancement of computer chips predicted by Moore's law.If data storage should continue to keep ahead of data production,intense research for new materials needed in high-performance magnetic recording devices will remain a challenge for solid-state chemistry.But this is merely the logical continuation of the impressive history of solid-state magnetochemistry,as demonstrated by well-known example of the maghemite phase.