scholarly journals Effect of stress and/or field annealing on the magnetic behavior of the (Co77Si13.5B9.5)90Fe7Nb3 amorphous alloy

2005 ◽  
Vol 97 (3) ◽  
pp. 034911 ◽  
Author(s):  
C. Miguel ◽  
A. P. Zhukov ◽  
J. J. del Val ◽  
A. Ramírez de Arellano ◽  
J. González
Keyword(s):  
Amorphous Alloy ◽  
Magnetic Behavior ◽  
Field Annealing

Influence of Phosphorus on the Calorimetric, Magnetic and Mechanical Properties of Amorphous Fe78 Si9B13 Alloys

1986 ◽  
Vol 80 ◽  
Author(s):  
P. Rudkowski ◽  
J. O. Strom-Olsen ◽  
R. Schulz ◽  
R. Roberge
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Amorphous Alloy ◽  
Phosphorus Concentration ◽  
Glassy Alloys ◽  
Optimum Stability ◽  
Saturation Induction ◽  
Soft Ferromagnetic ◽  
Field Annealing ◽  
Thermal Stability Of

AbstractThe effects of adding small amounts of phosphorus to amorphous Fe78Si9B13 alloys have been investigated. Substituting boron atoms by phosphorus improves the thermal stability of the glassy alloys. The optimum stability is reached at about 1.2 at. % phosphorus concentration. With respect to the soft ferromagnetic properties, the saturation induction increases rapidly with increasing phosphorus concentration, reaches a maximum around 0.1–0.2 at. % and then decreases upon further addition. The highest induction value was achieved with 0.1 at. % phosphorus after field annealing for 2 hours around 633K. The mechanical strength of the amorphous alloy is greatly reduced for phosphorus concentrations larger than 0.4 at. %.

Nucleation control for fine nano crystallization of Fe-based amorphous alloy by high-magnetic-field annealing

2015 ◽  
Vol 637 ◽  
pp. 213-218 ◽  
Author(s):  
Reisho Onodera ◽  
Shojiro Kimura ◽  
Kazuo Watanabe ◽  
Yoshihiko Yokoyama ◽  
Akihiro Makino ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Amorphous Alloy ◽  
High Magnetic Field ◽  
Field Annealing

scholarly journals Magnetic behavior and magnetocaloric effect of neodymium-based amorphous alloy

2008 ◽  
Vol 103 (4) ◽  
pp. 044902 ◽  
Author(s):  
S. Gorsse ◽  
G. Orveillon ◽  
B. Chevalier
Keyword(s):  
Amorphous Alloy ◽  
Magnetocaloric Effect ◽  
Magnetic Behavior

scholarly journals Influence of Milling Time on the Homogeneity and Magnetism of a Fe70Zr30 Partially Amorphous Alloy: Distribution of Curie Temperatures

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 490
Author(s):  
Alejandro F. Manchón-Gordón ◽  
Jhon J. Ipus ◽  
Javier S. Blázquez ◽  
Clara F. Conde ◽  
Alejandro Conde
Keyword(s):  
Amorphous Alloy ◽  
Crystal Size ◽  
Milling Time ◽  
Magnetocrystalline Anisotropy ◽  
Amorphous Matrix ◽  
Magnetic Behavior ◽  
Magnetic Response ◽  
Soft Magnetic ◽  
Mechanically Alloyed ◽  
Curie Temperatures

In this work, the mechanically alloyed Fe70Zr30 (at. %) composition has been used to study the influence of milling time on its homogeneity and magnetic properties. The microstructure and Fe environment results show the formation of an almost fully amorphous alloy after 50 h of milling in a mixture of pure 70 at. % Fe and 30 at. % Zr. The soft magnetic behavior of the samples enhances with the increase of the milling time, which is ascribed to the averaging out of the magnetocrystalline anisotropy as the crystal size decreases and the amorphous fraction increases. The formation of a non-perfectly homogenous system leads to a certain compositional heterogeneity, motivating the existence of a distribution of Curie temperatures. The parameters of the distribution (the average Curie temperature, T C ¯ , and the broadening of the distribution, ∆ T C ) have been obtained using a recently reported procedure, based on the analysis of the approach towards the saturation curves and the magnetocaloric effect. The decrease of ∆ T C and the increase of T C ¯ with the milling time are in agreement with the microstructural results. As the remaining α-Fe phase decreases, the amorphous matrix is enriched in Fe atoms, enhancing its magnetic response.

Enhanced thermal-operating stability of high-frequency magnetic behavior for FeMnSiBNbCu nano-structural cores via field-annealing

Vacuum ◽  
2021 ◽  
Vol 188 ◽  
pp. 110214
Author(s):  
Fuyao Yang ◽  
Bojun Zhang ◽  
Sida Man ◽  
Guang Ma ◽  
Xin Chen ◽  
...  
Keyword(s):  
High Frequency ◽  
Magnetic Behavior ◽  
Thermal Operating ◽  
Operating Stability ◽  
Field Annealing

Lorentz electron microscopy of magnetic domains in rapidly solidified and annealed Pt-Co-B alloys

1991 ◽  
Vol 49 ◽  
pp. 784-785
Author(s):  
N. Qiu ◽  
J. E. Wittig
Keyword(s):  
Rapid Solidification ◽  
Ion Beam ◽  
Magnetic Behavior ◽  
High Coercivity ◽  
Magnetic Domains ◽  
Beam Angle ◽  
Tem Analysis ◽  
Intrinsic Coercivity ◽  
Hard Magnets ◽  
Rapidly Solidified

PtCo hard magnets have specialized applications owing to their relatively high coercivity combined with corrosion resistance and ductility. Increased intrinsic coercivity has been recently obtained by rapid solidification processing of PtCo alloys containing boron. After rapid solidification by double anvil splat quenching and subsequent annealing for 30 minutes at 650°C, an alloy with composition Pt42Co45B13 (at.%) exhibited intrinsic coercivity up to 14kOe. This represents a significant improvement compared to the average coercivities in conventional binary PtCo alloys of 5 to 8 kOe.Rapidly solidified specimens of Pt42Co45B13 (at.%) were annealed at 650°C and 800°C for 30 minutes. The magnetic behavior was characterized by measuring the coercive force (Hc). Samples for TEM analysis were mechanically thinned to 100 μm, dimpled to about 30 nm, and ion milled to electron transparency in a Gatan Duomill at 5 kV and 1 mA gun current. The incident ion beam angle was set at 15° and the samples were liquid nitrogen cooled during milling. These samples were analyzed with a Philips CM20T TEM/STEM operated at 200 kV.

STRANGE MAGNETIC BEHAVIOR IN THE LITHIUM-METHYLAMINE SYSTEM

1980 ◽  
Vol 41 (C8) ◽  
pp. C8-45-C8-48
Author(s):  
A. Stacy ◽  
D. C. Johnson ◽  
M. J. Sienko
Keyword(s):  
Magnetic Behavior
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