Magnetic properties of nanowires with ferromagnetic core and antiferromagnetic shell

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:475

Article; Proceedings Paper

Patsopoulos, A.¹  Kechrakos, D.²  Moutis, N.² 

[1] Univ Athens, Sect Solid State Phys, Dept Phys, GR-15784 Athens, Greece

[2] Sch Pedag & Technol Educ ASPETE, Dept Educ, GR-14131 Athens, Greece

关键词: Exchange bias;    Core-shell nanowires;    Domain wall;    Monte Carlo;   

DOI  :  10.1016/j.jmmm.2018.11.100

来源: Elsevier

【 摘 要 】

We present a Monte Carlo study of the magnetic properties of thin cylindrical nanowires composed of a ferromagnetic core and an antiferromagnetic shell implementing a classical spin Hamiltonian. We address systematically the impact of interface exchange coupling on the loop characteristics and the magnetization reversal mechanism. We study the effect of shell polycrystallinity on the characteristic fields of the isothermal hysteresis loop (coercivity, exchange-bias). We demonstrate that coupling to a polycrystalline antiferromagnetic shell increases the critical core diameter for transition from transverse to vortex domain

【 授权许可】

Free