Magnetic properties and magnetization reversal process of L10 FePt/Fe bilayers magnetic thin films

2012 ◽  
Vol 258 (20) ◽  
pp. 8124-8127 ◽  
Author(s):  
Liwang Liu ◽  
Wei Sheng ◽  
Jianmin Bai ◽  
Jiangwei Cao ◽  
Yuanfu Lou ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Magnetization Reversal ◽  
Magnetic Thin Films ◽  
Reversal Process ◽  
Magnetization Reversal Process

Magnetization Reversal by Rotation in Magnetic Thin Films Deposited on Step Bunched Si(111) Substrates

1997 ◽  
Vol 475 ◽  
Author(s):  
M. Sussiau ◽  
A. Encinas ◽  
F. Nguyen Van Dau ◽  
A. Vaurès ◽  
A. Schuhl ◽  
...  
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Magnetization Reversal ◽  
Molecular Beam ◽  
Uniaxial Anisotropy ◽  
Magnetic Thin Films ◽  
Induced Anisotropy ◽  
Reversal Process ◽  
Magnetic Metal ◽  
Magnetization Reversal Process

ABSTRACTMagnetic and magnetoresistive properties of magnetic thin films deposited on periodically structured substrates have been studied. By using a thermodynamical heat treatment, we activate the step bunching phenomenon on vicinal Si(111) substrates misoriented towards [112] which results in a laterally modulated surface with a period around 0.1 μm. Epitaxial magnetic thin films deposited on these substrates exhibit an in-plane uniaxial anisotropy and a specific magnetoresistive behavior which characterizes the magnetization reversal process. In this contribution, we demonstrate that these properties can also be observed in non-epitaxial structures grown either by molecular beam epitaxy or by sputtering. In particular, magnetotransport measurements show that by varying parameters such as the nature of the magnetic metal, the layer thickness or the strength of the induced anisotropy, we can modulate the interplay between the anisotropy and the exchange stiffness, and, consequently, observe gradual magnetization reversal behaviors between a Stoner-Wohlfarth uniform mode and a non-uniform mode.

scholarly journals Coercivity Mechanism and Magnetization Reversal in Anisotropic Ce-(Y)-Pr-Fe-B Films

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4680
Author(s):  
Jun Ma ◽  
Xiaotian Zhao ◽  
Wei Liu ◽  
Yang Li ◽  
Long Liu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Rare Earths ◽  
Magnetization Reversal ◽  
Magnetic Films ◽  
Nucleation Mechanism ◽  
Magnetic Domains ◽  
Reversal Process ◽  
Heating Treatment ◽  
Coercivity Mechanism ◽  
Magnetization Reversal Process

In this study, the magnetic properties, coercivity mechanism, and magnetization reversal process were investigated for Ce-(Y)-Pr-Fe-B films. After the addition of Y and subsequent heating treatment, the formations of REO (RE ≡ Ce and Pr) and REFe2 (RE ≡ rare earths) phases are inhibited, and the microstructure of Ce-Y-Pr-Fe-B film is optimized. Meanwhile, the coercivity and the squareness of the hysteresis loop are significantly improved. The coercivity mechanism of Ce-Y-Pr-Fe-B film is determined to be a mixture of nucleation and pinning mechanisms, but dominated by the nucleation mechanism. The demagnetization results show that the nucleation of reversal magnetic domains leads to irreversible reversal. Our results are helpful to understand the coercivity mechanism and magnetization reversal of permanent magnetic films with multi-main phases.

Magnetization reversal process in polycrystalline ordered Fe–Pt(001) thin films

1999 ◽  
Vol 85 (8) ◽  
pp. 4301-4303 ◽  
Author(s):  
Toshio Suzuki ◽  
Naoki Honda ◽  
Kazuhiro Ouchi
Keyword(s):  
Thin Films ◽  
Magnetization Reversal ◽  
Reversal Process ◽  
Magnetization Reversal Process

Kerr effect observations of magnetization reversal process in antiferromagnetically pinned permalloy thin films

1999 ◽  
Vol 85 (8) ◽  
pp. 5525-5527 ◽  
Author(s):  
Zhenghong Qian ◽  
Mark T. Kief ◽  
Peter K. George ◽  
John M. Sivertsen ◽  
Jack H. Judy
Keyword(s):  
Thin Films ◽  
Magnetization Reversal ◽  
Kerr Effect ◽  
Reversal Process ◽  
Permalloy Thin Films ◽  
Magnetization Reversal Process
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