2026-06-18T02:26:01Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/57112024-07-25T07:23:06Zcom_10259_9476com_10259.4_106com_10259_2604col_10259_9477

00925njm 22002777a 4500 dc Nieves Cordones, Pablo author Serantes, D. author Chubykalo Fesenko, O. author 2016-07 Several recently reported exciting phenomena such as spin caloritronics or ultrafast laser-induced spin dynamics involve the action of temperature on spin dynamics. However, the inverse effect of magnetization dynamics on temperature change is very frequently ignored. Based on the density matrix approach, in this work we derive a self-consistent model for describing the magnetization and phonon temperature dynamics in ferromagnets in the framework of the quantum Landau-Lifshitz-Bloch equation. We explore potential applicability of our approach for two cases, inspired by magnetocaloric effect and magnetic fluid hyperthermia. In the first case, the spin-phonon dynamics is governed by the longitudinal relaxation in bulk systems close to the Curie temperature; while in the second case it is described by the transverse relaxation during the hysteresis cycle of individual nanoparticles well below the Curie temperature. 2469-9950 http://hdl.handle.net/10259/5711 10.1103/PhysRevB.94.014409 2469-9969 Self-consistent description of spin-phonon dynamics in ferromagnets