Size effect on the magnetic properties of CoFe2O4 nanoparticles: A Monte Carlo study

被引：51

作者：

Lamouri, R. ^{[1
,2
]}

Mounkachi, O. ^{[1
]}

Salmani, E. ^{[1
]}

Hamedoun, M. ^{[2
]}

Benyoussef, A. ^{[1
,2
,3
]}

Ez-Zahraouy, H. ^{[1
]}

机构：

[1] Mohammed V Univ, Fac Sci, LaMCScI, BP 1014, Rabat, Morocco

[2] MAScIR Fdn, Mat & Nanomat Ctr, Rabat Design Ctr, Rue Mohamed Al Jazouli Madinat Al Irfane, Rabat 10100, Morocco

[3] Hassan II Acad Sci & Technol, Rabat, Morocco

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 06期

关键词：

CoFe2O4 single nanoparticles; Monte Carlo simulation; Permanent magnet; COBALT-FERRITE; ENERGY PRODUCT;

D O I：

10.1016/j.ceramint.2019.12.035

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, we report the size-effects on the magnetic properties of CoFe2O4 hard ferrite single nanoparticles using Monte Carlo simulation within the Ising model. Free boundaries conditions were used to simulate the cubic nanoparticles with different sizes. Saturation and remanent magnetization increased with the increase of the particle size. Rise of the squareness ratio (Mr/Ms) towards high values is observed. Furthermore, the single-domain size limit is shown for the size of 21 nm. Besides, we evaluated the performance of the cubic shaped CoFe(2)O(4 )permanent magnet in term of the maximum energy product. A high value of the (BH)(max) of about 2.83 MG Oe at room temperature for 21 nm was achieved. The obtained results allowed us to determine the theoretical limits of the magnetic properties of the cubic shaped CoFe2O4 nanoparticles and pave the way for the development of CoFe(2)O(4)spinel ferrites for permanent magnet applications.

引用

页码：8092 / 8096

页数：5

共 26 条

[1] Tunable maximum energy product in CoFe2O4 nanopowder for permanent magnet application [J].