scholarly journals Effect of Substituting Hf for Zr on Fe-Co-M-Nb-B (M = Zr, Hf) Amorphous Alloys with High Saturation Magnetization

Metals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 12
Author(s):  
Hyunsol Son ◽  
Garam Yoo ◽  
Qoimatul Mustaghfiroh ◽  
Dong-Hyun Kim ◽  
Haein Choi-Yim
Keyword(s):  
Saturation Magnetization ◽  
Amorphous Alloys ◽  
Amorphous Structure ◽  
Optimum Ratio ◽  
Soft Magnetic ◽  
Amorphous Ribbons ◽  
Magnetic Performance ◽  
Crystallization Onset ◽  
Soft Magnetic Amorphous Alloys ◽  
Thermal Stability Of

The soft magnetic amorphous ribbons of (FexCo1−x)85M9Nb1B5 (M = Zr or Hf, x = 0.4, 0.5, 0.6, 0.7, 0.8, and 0.9) were investigated in this study. Replacing Zr by Hf turned out to increase saturation magnetization and, at the same time, reduce the coercivity, both of which serve together in enhancing the soft magnetic performance of the alloys. Moreover, the optimum ratio of Fe/Co was determined after the survey on different alloys with varying Fe/Co ratio resulting in the maximum saturation magnetization while keeping the coercivity low. After optimization, the highest saturation magnetization of 1.62 T was achieved with coercity of 11 A/m. While substitution of Hf for Zr slightly reduced the crystallization onset temperature of the amorphous structure, the thermal stability of the soft magnetic amorphous alloys was not significantly affected by the Zr/Hf replacement.

Formation, and mechanical and magnetic properties of bulk ferromagnetic Fe-Nb-B-Y-(Zr, Co) alloys

2006 ◽  
Vol 21 (4) ◽  
pp. 1019-1024 ◽  
Author(s):  
J.M. Park ◽  
J.S. Park ◽  
D.H. Kim ◽  
J-H. Kim ◽  
E. Fleury
Keyword(s):  
Magnetic Properties ◽  
Saturation Magnetization ◽  
Amorphous Alloys ◽  
Amorphous Structure ◽  
Glass Forming Ability ◽  
Partial Replacement ◽  
Soft Magnetic ◽  
Glass Forming ◽  
Mold Casting ◽  
Co Alloys

Fe element was partially substituted by Zr and Co in an attempt to enhance the glass-forming ability, and mechanical and soft magnetic properties of Fe74-xNb6B17Y3(Zr, Co)x (x = 3, 5, 8) amorphous alloys. Both partial replacements resulted in the enhancement of the glass-forming ability, and 3-mm diameter rods with a fully amorphous structure were prepared by a copper mold casting method. Zr and Co containing Fe-based bulk amorphous alloys exhibited high compressive fracture strength of about 4 and 3.5 GPa, respectively. However, Zr and Co induced different effects on the magnetic properties. Whereas the partial replacement of Fe by Zr was found to decrease dramatically the saturation magnetization, the partial replacement of Fe by Co provided an increase of about 25% of the saturation magnetization.

scholarly journals Giant Stress Impedance Magnetoelastic Sensors Employing Soft Magnetic Amorphous Ribbons

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2175 ◽  
Author(s):  
Juan Jesús Beato-López ◽  
Juan Garikoitz Urdániz-Villanueva ◽  
José Ignacio Pérez-Landazábal ◽  
Cristina Gómez-Polo
Keyword(s):  
Amorphous Alloys ◽  
Subsequent Development ◽  
Young Modulus ◽  
Amorphous Structure ◽  
Rapid Quenching ◽  
Soft Magnetic ◽  
Highly Sensitive ◽  
Magnetoelastic Sensors ◽  
Soft Magnetic Amorphous Alloys

Soft magnetic amorphous alloys obtained via rapid quenching techniques are widely employed in different technological fields such as magnetic field detection, bio labeling, non-contact positioning, etc. Among them, magnetoelastic applications stand out due to excellent mechanical properties exhibited by these alloys, resulting from their amorphous structure, namely, their high Young modulus and high tensile strength. In particular, the giant stress impedance (GSI) effect represents a powerful tool to develop highly sensitive magnetoelastic sensors. This effect is based on the changes in the high-frequency electric impedance as the result of the variation in magnetic permeability of the sample under the action of mechanical stresses. In this work, the GSI effect is analyzed in two soft magnetic ribbons ((Co0.93 Fe0.07)75 Si12.5 B12.5 and (Co0.95 Fe0.05)75 Si12.5 B12.5) for the subsequent development of two practical devices: (i) the characterization of the variations in the cross-section dimensions of irregularly shaped elements, and (ii) the design of a flow meter for measuring the rate of flow of water through a pipe.

scholarly journals Glass Forming Ability, Thermal Stability, and Magnetic Properties of FeCoNiBSi Alloys with Different B Contents

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Haibo Sun ◽  
Yongfei Wang
Keyword(s):  
Thermal Stability ◽  
Magnetic Properties ◽  
Annealing Temperature ◽  
Amorphous Structure ◽  
Glass Forming Ability ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Glass Forming ◽  
Crystallization Onset ◽  
Thermal Stability Of

The dependence on the glass forming ability, magnetic property, and thermal stability of the (Fe0.39Co0.15Ni0.46)82−xB12+xSi6 (x = 0, 2, 4, and 6) alloys was investigated. The results show that the as-quenched alloy ribbons exhibit a completely amorphous structure with B content in the range of 12∼18 at.%. The initial crystallization onset temperature of the as-quenched ribbon increases with the increase of B content. When the B content is up to 14 at.%, the temperature interval between the two crystallization peaks will sharply reduce, which narrows the effective annealing range that is detrimental to improving the soft magnetic properties. Both of the Ms and Hc of the as-quenched ribbons increase first and then decrease with the increase of B content. Here, the maximum Ms of 0.90 T and low Hc of 10.2 A/m can be obtained at the B content of 14 at.%. Additionally, the (Fe0.39Co0.15Ni0.46)80B14Si6 alloy exhibits the minimum Hc of 5.9 A/m and Ms of 0.934 T at the proposed annealing temperature of 698 K for 10 min in the vacuum condition.

Investigation on the crystallization mechanism difference between FINEMET® and NANOMET® type Fe-based soft magnetic amorphous alloys

2016 ◽  
Vol 120 (14) ◽  
pp. 145102 ◽  
Author(s):  
Yaocen Wang ◽  
Yan Zhang ◽  
Akira Takeuchi ◽  
Akihiro Makino ◽  
Yoshiyuki Kawazoe
Keyword(s):  
Amorphous Alloys ◽  
Crystallization Mechanism ◽  
Soft Magnetic ◽  
Soft Magnetic Amorphous Alloys

scholarly journals The magnetocaloric effect in soft magnetic amorphous alloys

2007 ◽  
Vol 101 (9) ◽  
pp. 09C503 ◽  
Author(s):  
V. Franco ◽  
J. S. Blázquez ◽  
M. Millán ◽  
J. M. Borrego ◽  
C. F. Conde ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Amorphous Alloys ◽  
Soft Magnetic ◽  
Soft Magnetic Amorphous Alloys

B23-P-04High glass forming ability Fe-based soft magnetic amorphous alloys

Microscopy ◽  
2015 ◽  
Vol 64 (suppl 1) ◽  
pp. i113.2-i113
Author(s):  
C. N. Kuo ◽  
Y. H. Chen ◽  
T. Y. Wei ◽  
Y.L. Su ◽  
J. C. Huang
Keyword(s):  
Amorphous Alloys ◽  
Glass Forming Ability ◽  
Soft Magnetic ◽  
Glass Forming ◽  
Soft Magnetic Amorphous Alloys

scholarly journals Structure and Soft Magnetic Properties of the Amorphous Alloys: Fe61Co10Ti3-xY6+xB20 (x = 0, 1)

2016 ◽  
Vol 61 (1) ◽  
pp. 445-450
Author(s):  
K. Błoch
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Major Effect ◽  
Exothermic Peak ◽  
Soft Magnetic Properties ◽  
X Ray Diffraction ◽  
Cast State ◽  
Soft Magnetic ◽  
Two Peaks ◽  
Thermal Stability Of

This paper presents studies relating to the structure, soft magnetic properties and thermal stability of the following bulk amorphous alloys: Fe61Co10Ti3-xY6+xB20 (x = 0, 1). On the basis of the performed X-ray diffraction studies and Mössbauer spectroscopy, it was found that investigated samples were amorphous in the as-cast state. The DSC curve obtained for Fe61Co10Ti2Y7B20 alloy exhibited one exothermic peak, while for the Fe61Co10Ti3Y6B20 sample, two peaks were distinguishable. The change in the chemical structure of the investigated alloys has a major effect on their soft magnetic properties; especially on coercivity and saturation magnetization. On the basis of the magnetization curves analysis, the spin wave stiffness parameter Dsp were determined for the investigated alloys.

Ar ion irradiation effect on the soft magnetic performance of Fe-based amorphous alloys

2020 ◽  
Vol 511 ◽  
pp. 166962
Author(s):  
Qiang Luo ◽  
Xindu Fan ◽  
Baowei Miao ◽  
Baolong Shen ◽  
Jun Shen
Keyword(s):  
Amorphous Alloys ◽  
Ion Irradiation ◽  
Irradiation Effect ◽  
Soft Magnetic ◽  
Magnetic Performance
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