author = "Siqueira, E. C. and N. J{\'u}nior, L. R. and Jurelo, A. R. and 
                         Monteiro, Jo{\~a}o Frederico H. L. and Orellana, P. A. and 
                         Cabrera, G. G. and Fachini Filho, Fernando",
          affiliation = "{Universidade Tecnol{\'o}gica Federal do Paran{\'a} (UFTPR)} and 
                         {Universidade Tecnol{\'o}gica Federal do Paran{\'a} (UFTPR)} and 
                         {Universidade Estadual de Ponta Grossa (UEPG)} and {Universidade 
                         Estadual de Ponta Grossa (UEPG)} and {Universidad T{\'e}cnica 
                         Federico Santa Maria} and {Universidade Estadual de Campinas 
                         (UNICAMP)} and {Instituto Nacional de Pesquisas Espaciais 
                title = "A microscopic approach to heating rate of ferrofluid droplets by a 
                         magnetic field",
              journal = "Journal of Applied Physics",
                 year = "2019",
               volume = "125",
               number = "4",
                pages = "e045104",
                month = "Jan.",
             abstract = "In this work, we study the heating process of colloidal 
                         ferrofluids by a magnetic field. The heating of the fluid occurs 
                         by the magnetic relaxation of the nanoparticles which provide 
                         thermal energy for the host liquid. In the limit of small volumes, 
                         the relaxation process occurs through the N{\'e}el mechanism 
                         since the magnetic nanoparticles present superparamagnetic 
                         behavior. Within this limit, we have used a microscopic model for 
                         the coupling to phonons and external magnetic field in order to 
                         model the relaxation mechanism and to obtain an expression for the 
                         heating rate of the fluid as a function of microscopic parameters. 
                         The analysis allows determining appropriate conditions for an 
                         optimal heating rate for ferrofluids based on superparamagnetic 
                  doi = "10.1063/1.5078648",
                  url = "http://dx.doi.org/10.1063/1.5078648",
                 issn = "0021-8979",
             language = "en",
           targetfile = "siqueira_microscopic.pdf",
        urlaccessdate = "02 dez. 2020"