2019/03/20 by Shotaro Doi, Munehisa Matsumoto, Doi, Shotaro +1
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties of Alloys #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Rare-earth and actinide compounds #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1903.08480
arxiv created 2019/03/20 · openalex publication_date 2019/03/20 · arxiv updated 2019/03/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The electronic structure of the ferromagnetic material CeRh3B2 is studied by means of first-principles calculations with an emphasis on the treatment of localized 4f states around Ce. Via the construction of an effective spin model from electronic structure calculations, we estimated the Curie temperature T\rm C of CeRh3B2 and found a specific configuration of the electronic structure which explains the exceptionally high measured value of T\rm C ∼ 120 K as well as the small saturation magnetization and the topology of the Fermi surface. Present advance in the understanding of the subtle nature of the 4f-electron state in CeRh3B2 that brings about the exceptionally high T\rm C should be also of technological relevance to exploit the utility of Ce in rare-earth permanent magnets.