@Article{SiqueiraNJJuMoOrCaFa:2019:MiApHe,
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
(INPE)}",
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
nanoparticles.",
doi = "10.1063/1.5078648",
url = "http://dx.doi.org/10.1063/1.5078648",
issn = "0021-8979",
language = "en",
targetfile = "siqueira_microscopic.pdf",
urlaccessdate = "27 abr. 2024"
}