Enhancement of Curie temperature due to the coupling between Fe itinerant electrons and Dy localized electrons in DyFe2Zn20
Abstract
The temperature dependence of magnetization and specific heat of the ferromagnetic compound DyFe2Zn20 has been measured in detail in various magnetic fields. We have observed anomalous magnetic behavior, i.e., a strong anisotropy at 2 K, disappearance of this anisotropy between approximately 30 K and Tc, and anomalous behavior of the specific heat in the magnetic fields near 20 K. These anomalous phenomena have been analyzed based on the strong exchange interaction between the Fe itinerant electrons and the Dy localized electrons as well as the crystalline electric field, Zeeman energy, and an usual exchange interaction between two Dy atoms. The higher Tc of DyFe2Zn20 compared with that of DyRu2Zn20 is caused by this exchange interaction between the Fe and Dy atoms.
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.