Monte Carlo simulation of magnetic domain structure and magnetic properties near the morphotropic phase boundary

2017 ◽  
Vol 19 (10) ◽  
pp. 7236-7244 ◽  
Author(s):  
Songrui Wei ◽  
Sen Yang ◽  
Dong Wang ◽  
Xiaoping Song ◽  
Xiaoqin Ke ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Magnetic Properties ◽  
Phase Boundary ◽  
Domain Structure ◽  
Morphotropic Phase Boundary ◽  
Energy Barrier ◽  
Magnetic Domain ◽  
Magnetic Domain Structure ◽  
Constant Field

The magnetization properties changing with the anisotropy energy barrier (a) and temperature (b) under a constant field.

Magnetic Domain Structure of Nanocrystalline Zr18-xHfxCo82 Ribbons: Effect of Hf

2013 ◽  
Vol 1557 ◽  
Author(s):  
Lanping Yue ◽  
I. A. Al-Omari ◽  
Wenyong Zhang ◽  
Ralph Skomski ◽  
D. J. Sellmyer
Keyword(s):  
Magnetic Properties ◽  
Domain Structure ◽  
Structure Refinement ◽  
Magnetic Domain ◽  
Maximum Energy ◽  
Magnetic Domain Structure ◽  
Maximum Energy Product ◽  
Energy Product ◽  
Domain Structures ◽  
Rapidly Solidified

ABSTRACTThe effect of Hf on the permanent magnetism of nanocrystalline Zr18-xHfxCo82 ribbons (x = 0, 2, 4, and 6) was investigated by magnetic properties measurement and magnetic force microscopy (MFM). Emphasis is on the local magnetic domain structures in polycrystalline rapidly solidified Zr18-xHfxCo82 ribbons for four different samples with small fractions of Hf dopants (x ≤ 6). The investigation of the magnetic properties of the Zr18-xHfxCo82 ribbons revealed that all the samples under investigation are ferromagnetic at room temperature, and the corresponding MFM images show bright and dark contrast patterns with up-down magnetic domain structures. It is found that the saturation magnetization and the coercivity depend on Hf doping concentration x in the samples. For a sample with Hf concentration x = 4, the maximum energy product (BH)max value is 3.7 MGOe. The short magnetic correlation length of 131 nm and smallest root-mean-square phase shift value of 0.680 were observed for x = 4, which suggests the refinement of the magnetic domain structure due to weak intergranular exchange coupling in this sample. The above results indicate that suitable Hf addition is helpful for the magnetic domain structure refinement, the coecivity enhancement, and the energy-product improvement of this class of rare-earth-free nanocrystalline permanent-magnet materials.

scholarly journals Thickness Dependent Surface Topography, Magnetic Properties and Magnetic Domain Structure of Amorphous FeTaC Thin Films

2018 ◽  
Vol 07 (03) ◽  
Author(s):  
Camelia Das ◽  
Jumal Das ◽  
Thiruvengadam Vijayabaskaran ◽  
Subhankar Bedanta ◽  
Abhishek Talapatra ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Surface Topography ◽  
Domain Structure ◽  
Magnetic Domain ◽  
Magnetic Domain Structure

scholarly journals Magnetic Properties and Magnetic Domain Structure of Nd-Fe Based Metallic Glasses

2003 ◽  
Vol 15-16 ◽  
pp. 93-98
Author(s):  
Bing Chen Wei ◽  
G.S. Yu ◽  
L. Xia ◽  
Ming Xiang Pan ◽  
Beom-Suck Han ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Domain Structure ◽  
Metallic Glasses ◽  
Magnetic Domain ◽  
Magnetic Domain Structure

Effect of Boron Addition on Magnetic-Domain Structure of Rapidly Quenched Zr2Co11−Based Nanomaterials

MRS Advances ◽  
2016 ◽  
Vol 1 (34) ◽  
pp. 2379-2385 ◽  
Author(s):  
Lanping Yue ◽  
Yunlong Jin ◽  
David J. Sellmyer
Keyword(s):  
Magnetic Properties ◽  
Domain Structure ◽  
Structure Refinement ◽  
Magnetic Domain ◽  
Domain Size ◽  
Maximum Energy ◽  
Magnetic Domain Structure ◽  
Maximum Energy Product ◽  
Energy Product ◽  
Domain Structures

ABSTRACTThe boron-content dependence of magnetic domain structures and magnetic properties of nanocrystalline Zr16Co82.5−xMo1.5Bx (x = 0, 1, 2, 3, 4) melt-spun ribbons have been investigated. Compared to x = 0, the smaller average domain size with a relatively short magnetic correlation length of 120 nm and largest root-mean-square phase shift value of 0.94° are observed for x = 1. The best magnetic properties of coercivity Hc = 5.4 kOe, maximum energy product (BH)max = 4.1 MGOe, and saturation polarization Js = 7.8 kG, were obtained for the ribbon with x = 1. The optimal B addition enhances the content of hard magnetic phase, promotes magnetic domain structure refinement, and increases the surface roughness, results in the enhancement of magnetic anisotropy, and thus leads to a significant increase in coercivity and energy product in this sample.

scholarly journals Magnetic properties and magnetic domain structure of bulk glass forming Nd60Al10Fe20Co10 alloy

2004 ◽  
Vol 201 (7) ◽  
pp. 1563-1569 ◽  
Author(s):  
B. C. Wei ◽  
G. S. Yu ◽  
W. H. Li ◽  
W. L�ser ◽  
S. Roth ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Domain Structure ◽  
Magnetic Domain ◽  
Magnetic Domain Structure ◽  
Bulk Glass ◽  
Glass Forming

Magnetic properties and magnetic domain structure of Nd6Dy2Fe82Co4B6 nanocomposite magnets

2001 ◽  
Vol 316 (1-2) ◽  
pp. 296-298 ◽  
Author(s):  
Jin-hua Yin ◽  
Bao-gen Shen ◽  
Dun-Hui Wang ◽  
Xiao-Bo Yin ◽  
Mu Wang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Domain Structure ◽  
Magnetic Domain ◽  
Magnetic Domain Structure ◽  
Nanocomposite Magnets
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