Magnetization of magnetically inhomogeneous Sr2FeMoO6-δ nanoparticles
Description
Magnetization is a key property of magnetic materials. Nevertheless, a satisfactory, analytical description of the temperature dependence of magnetization in double perovskites such as strontium ferromolybdate is still missing. In this work, we develop, for the very first time, a model of the magnetization of nanosized, magnetically inhomogeneous Sr2FeMoO6-δ nanoparticles. The temperature dependence of magnetization was approximated by an equation consisting of a Bloch-law spin wave term, a higher order spin wave correction, both taking into account the temperature dependence of the spin-wave stiffness, and a superparamagnetic term including the Langevin function. In the limit of pure ferromagnetic behavior, the model is applicable also to SFMO ceramics. In the vicinity of the Curie temperature (T/TC > 0.85), the model fails.
Files
MoEM_article_75786.pdf
Files
(495.0 kB)
Name | Size | Download all |
---|---|---|
md5:a3dbfff362a7a5fce8aaac9702f8fcf7
|
459.7 kB | Preview Download |
md5:9d1b0956d3214249c455b4ab6df15f12
|
35.4 kB | Preview Download |