Preparation of Fe–Si–B–Nb amorphous powder cores with excellent high-frequency magnetic properties

2006 ◽  
Vol 304 (1) ◽  
pp. e182-e185 ◽  
Author(s):  
E.Y. Kang ◽  
Yoon B. Kim ◽  
K.Y. Kim ◽  
Y.H. Chung ◽  
H.K. Baik
Keyword(s):  
Magnetic Properties ◽  
High Frequency ◽  
Amorphous Powder

Vacuum hot pressing of Fe–Si–B–Nb-based amorphous powder cores and their high-frequency magnetic properties

2006 ◽  
Vol 99 (8) ◽  
pp. 08F111 ◽  
Author(s):  
E. Y. Kang ◽  
Yoon B. Kim ◽  
K. Y. Kim ◽  
Y. H. Chung ◽  
H. K. Baik
Keyword(s):  
Magnetic Properties ◽  
Hot Pressing ◽  
High Frequency ◽  
Amorphous Powder ◽  
Vacuum Hot Pressing

Magnetic Properties of Composite Amorphous Powder Cores

1986 ◽  
Vol 80 ◽  
Author(s):  
Hong-Yow Chang ◽  
Pei-Chih Yao ◽  
Der-Ray Huang ◽  
Shu-En Hsu
Keyword(s):  
Magnetic Properties ◽  
High Frequency ◽  
Core Loss ◽  
Amorphous Powder ◽  
Initial Magnetization ◽  
Field Annealing ◽  
Interparticle Contacts ◽  
Embrittlement Temperature ◽  
Amorphous Powders ◽  
High Frequency Ac

AbstractComposite amorphous powder core made by field-annealing with new insulations could improve the high frequency AC magnetic and mechanical properties. All of the amorphous ribbons with composition Fe78B16Si5C and Fe40Ni38Mo4B17Si were annealed at temperature higher than their embrittlement temperature but lower than the crystallization temperature. After the ribbons become brittle, they were mechanically crushed and milled to produce powders with size about 50 ∼ 250μm. To make a core, the amorphous powders combined with insulation binder were put into an evacuted toroidal followed by hot mechanical compaction. The weight percentages of binder were about 3 wt%, 5 wt% and 10 wt%. Field-annealings were carried out for different conditions in an Ar (or N2) atmosphere chamber at elevated temperature with applied field about 10 Oe. The initial magnetization curve and saturation magnetization were measured by vibrating sample magnetometer (O≤H≤10 KOe). DC and AC magnetic properties such as permeability, coercive force, core loss, etc. were tested by B-H loop tracer. It shows the AC properties can be improved by increasing the particle size of the amorphous powder and by increasing the interparticle contacts at high frequency.

Magnetic properties of FeXNi100-X (X=20, 17, 15 %) thin films: focus on high-frequency sensory applications

2019 ◽  
pp. 20-25
Author(s):  
Anna Chlenova ◽  
◽  
Elizaveta Golubeva ◽  
Iuliia Novoselova ◽  
Ruslan Salikhov ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
High Frequency

Optimizing the magnetic properties of Fe-based amorphous powder by adjusting atomic structures from vitrification at different temperatures

2019 ◽  
Vol 126 (16) ◽  
pp. 165109
Author(s):  
Song-Yi Kim ◽  
Hye-Ryeong Oh ◽  
Hyeon-Ah Kim ◽  
A-Young Lee ◽  
Hwi-Jun Kim ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Amorphous Powder ◽  
Atomic Structures ◽  
Different Temperatures

Effect of Temperature on the Magnetic Permeability of Hexagonal Ferrites

2018 ◽  
Vol 781 ◽  
pp. 36-40
Author(s):  
Olga Dotsenko ◽  
Kirill Frolov ◽  
Dmitry Wagner ◽  
Veronika Dotsenko ◽  
Dmitry Aksentev
Keyword(s):  
Magnetic Properties ◽  
High Temperature ◽  
High Frequency ◽  
Solid State Reaction Method ◽  
Nonlinear Dependence ◽  
Effect Of Temperature ◽  
Hexagonal Ferrites ◽  
Temperature Synthesis ◽  
Reaction Method ◽  
High Temperature Synthesis

In this study, Co0,7Zn1,3W powders were synthesized and investigated at the microwave region. The solid-state reaction method and self-propagating high-temperature synthesis were used to production of the two kinds of hexaferrite powders. The high-frequency magnetic properties under temperature effect have been studied. It is show, that there is a nonlinear dependence on temperature within the 0 – +40 °C temperature range.

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