Soft Magnetic Properties and Microstructures for the Fe Based Sputtered Films with High Bs

1991 ◽  
Vol 232 ◽  
Author(s):  
Migaku Takahashi ◽  
T. Shimatsu
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetocrystalline Anisotropy ◽  
Film Plane ◽  
Initial Permeability ◽  
Physical Origin ◽  
Soft Magnetic ◽  
Magnetic Anisotropy Energy ◽  
Local Anisotropy ◽  
Sputtered Films ◽  
Sufficient Reduction

ABSTRACTPhysical origin of high initial permeability, μi, in Fe based films with large magnetocrystalline anisotropy and magnetostriction is systematically discussed in connection with the microstructure of the films. In order to decrease the local anisotropy fluctuation to determine μi in these films, decrease of effective magnetic anisotropy, Ueff, of each grain mainly caused by the sufficient reduction of grain size is required. Induced uniaxial magnetic anisotropy energy, Ku, in film plane plays an important role to decrease Ueff through the micromagnetic interaction. The ratio of Ueff /Ku proposed as the important key to analyse the magnetization process. The dependence of μi Ku is classified concerning for Ueff/Ku.

Components of Magnetic Anisotropy of Soft Magnetic Nanocrystalline Fe-Based Films

2015 ◽  
Vol 233-234 ◽  
pp. 619-622 ◽  
Author(s):  
E.V. Harin ◽  
Elena N. Sheftel
Keyword(s):  
Magnetron Sputtering ◽  
Magnetic Anisotropy ◽  
Hysteresis Loops ◽  
Anisotropy Field ◽  
The Other ◽  
Structure Parameters ◽  
Soft Magnetic ◽  
Local Anisotropy ◽  
Magnetoelastic Anisotropy ◽  
Residual Macrostresses

We present quantitative evaluation results of micromagnetic structure parameters of nanocrystalline Fe, Fe95Zr5, Fe90N10, and Fe85Zr5N10films obtained by magnetron sputtering. It is shown that quantities of magnetocrystallineK1, magnetoelasticKME, magnetostaticKMS, and surfaceKa,Sanisotropies are components of experimentally measured effective local anisotropyKeff. The shape of the hysteresis loops of the films is determined by the presence of two main macroscopic effective magnetic anisotropies, one of which is the anisotropy field of stochastic domains, and the other is the magnetoelastic anisotropy field due to residual macrostresses.

Magnetic Properties of Fe-Co Films with Tuneable In-Plane Uniaxial Anisotropy Prepared by Electrodeposition

2010 ◽  
Vol 160-162 ◽  
pp. 951-956
Author(s):  
Xu Yang ◽  
Lu Qian Gong ◽  
Liang Qiao ◽  
Tao Wang ◽  
Fa Shen Li
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Uniaxial Anisotropy ◽  
Anisotropy Field ◽  
Magnetic Films ◽  
Film Plane ◽  
Electrolyte Temperature ◽  
Soft Magnetic ◽  
Conductive Glass ◽  
Fe Content

Fe-Co soft magnetic films with tuneable in-plane uniaxial anisotropy were successfully electrodeposited onto ITO conductive glass. The influence of composition and electrolyte temperature on in-plane magnetic anisotropy field was investigated. Our results show that the in-plane uniaxial anisotropy can be induced by a magnetic field applied in the film plane during electrodeposition. Fe-Co films with various Fe content in the range from 35 at.% to 53 at.% were obtained and the magnetic anisotropy field was very sensitive to the composition. Moreover, the influence of electrolyte temperature on magnetic anisotropy field was investigated and it was found that the in-plane uniaxial anisotropy field can be tuned by varying the electrolyte temperature from 5 to 40 oC.

scholarly journals Magnetic Properties in Finemet-Type Soft Magnetic Toroidal Cores Annealed under Radial Stresses

Metals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 122
Author(s):  
Zhiyong Xue ◽  
Xuesong Li ◽  
Sajad Sohrabi ◽  
Yu Ren ◽  
Weihua Wang
Keyword(s):  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Structural Characteristics ◽  
Routine Method ◽  
Soft Magnetic ◽  
Magnetic Anisotropy Energy ◽  
Soft Magnetic Alloys ◽  
Novel Approach ◽  
Magnetic Inductance ◽  
Nanocrystalline Soft Magnetic Alloys

Applying tensile stresses on straight soft magnetic ribbons before core fabrication is a routine method of inducing magnetic anisotropy, while methods of stress annealing of ribbons after core winding are seldom explored. In this study, we utilize a novel approach to induce magnetic anisotropy by applying radial stresses on tape-wound cores of Fe73.5Si13.5B9Cu3Nb1 (at. %) ribbon during crystallization heat treatment. The results show that while stress annealing does not change the structural characteristics of annealed samples, the magnetic anisotropies induced can increase to values ~3–5 times larger than the sample annealed in the absence of external stress. This increase in magnetic anisotropy energy is associated with ~25–50% decrease of magnetic inductance in the treated cores. These results suggest that the magnetic properties of nanocrystalline soft magnetic alloys can be effectively tuned by applying radial stresses.

NILOMAG 77

Alloy Digest ◽  
1995 ◽  
Vol 44 (10) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Initial Permeability ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy ◽  
High Level

Abstract NILOMAG ALLOY 77 is a 77 Ni soft magnetic alloy with a high level of initial permeability. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on heat treating. Filing Code: Ni-488. Producer or source: Inco Alloys International Inc.

Atomic structure of soft magnetic Fe-Si alloys with induced magnetic anisotropy

2006 ◽  
Vol 101 (S1) ◽  
pp. S59-S62 ◽  
Author(s):  
N. V. Ershov ◽  
Yu. P. Chernenkov ◽  
V. A. Lukshina ◽  
V. I. Fedorov ◽  
B. K. Sokolov
Keyword(s):  
Magnetic Anisotropy ◽  
Atomic Structure ◽  
Soft Magnetic ◽  
Induced Magnetic Anisotropy

scholarly journals Spin-reversal energy barriers of 305 K for Fe2+ d6 ions with linear ligand coordination

Nanoscale ◽  
2017 ◽  
Vol 9 (30) ◽  
pp. 10596-10600 ◽  
Author(s):  
Lei Xu ◽  
Ziba Zangeneh ◽  
Ravi Yadav ◽  
Stanislav Avdoshenko ◽  
Jeroen van den Brink ◽  
...  
Keyword(s):  
Solid State ◽  
Magnetic Anisotropy ◽  
Point Group ◽  
Group Symmetry ◽  
Point Group Symmetry ◽  
State Matrix ◽  
Magnetic Anisotropy Energy ◽  
Spin Reversal ◽  
Ligand Coordination ◽  
Li Ion

A remarkably large magnetic anisotropy energy of 305 K is computed by quantum chemistry methods for divalent Fe2+ d6 substitutes at Li-ion sites with D6h point-group symmetry within the solid-state matrix of Li3N.

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