https://doi.org/10.1140/epjp/i2015-15127-0
Regular Article
Theoretical exploration on the magnetic properties of ferromagnetic metallic glass: An Ising model on random recursive lattice
1
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, China
2
Department of Physics, Tongji University, 200092, Shanghai, China
3
Ningbo Hongzheng Engineering Consulting Co. Ltd, Ningbo, 315000, Zhejiang, China
4
Department of Computer Science and Engineering, Washington University in St. Louis, 63130, St. Louis, MO, USA
5
Institute of Process Engineering, Chinese Academy of Science, 100190, Beijing, China
* e-mail: ranhuang@sjtu.edu.cn
** e-mail: yanlinyin@iccas.ac.cn
Received:
21
April
2015
Revised:
10
June
2015
Accepted:
15
June
2015
Published online:
3
July
2015
The ferromagnetic Ising spins are modeled on a recursive lattice constructed from random-angled rhombus units with stochastic configurations, to study the magnetic properties of the bulk Fe-based metallic glass. The integration of spins on the structural glass model well represents the magnetic moments in the glassy metal. The model is exactly solved by the recursive calculation technique. The magnetization of the amorphous Ising spins, i.e. the glassy metallic magnet is investigated by our modeling and calculation on a theoretical base. The results show that the glassy metallic magnets have a lower Curie temperature, weaker magnetization, and higher entropy compared to the regular ferromagnet in crystal form. These findings can be understood with the randomness of the amorphous system, and agree well with other experimental observations.
© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg, 2015
