magnetic microwire

1. The Community of Madrid, through the Ministry of Education
2.  (Directorate General for Universities and Research), awarded
3.  this initiative in the First Contest of Ideas for Spin-Off of 
4. Researchers madri d in the area of New Materials, 
5. Nanotechnology and Technology Production, the project entitled 
6. "Project for the creation of a company dedicated to the manufacture,
7.  research, innovation, and commercialization of amorphous magnetic
8.  materials."In a first stage the work Micromag focused on automation 
9. and mass production of amorphous magnetic microwire. This objective
10.  has been achieved by modifying the laboratory equipment, making them 
11. more stable, and ensuring repeatability of the process. Incorporated, also, 
12. a system for quality control. These improvements have led to currently 
13. available production methods and efficient enough to be controlled to 
14. meet new applications.A magnetic microwire is a continuous filament of
15.  less than 100 mm in diameter consisting of a metallic core covered with a
16.  layer of glass. The manufacturing method, which depends directly on the 
17. cast in one operation, is inherently cheaper and has been used successfully
18.  to produce a wide range of metals and alloys that vary in size 100 ìm to 3 mm
19.  in diameter total. Amorphous magnetic microwires with exceptional magnetic
20.  properties are usually obtained using the technique of Taylor-Ulitowski. The 
21. core diameter and thickness of the cover are just microns.The interesting magneto
22. c properties of microwires are strongly correlated with its high axial magnetic 
23. anisotropy. This is because the amorphous structure, cylindrical geometry and 
24. mechanical stress generated during the manufacturing process due to the 
25. difference between the coefficients of thermal expansion of glass and metal.Among
26.  the many applications that can be used amorphous magnetic microwires stresses its
27.  use as a base for composite materials (composites), which have high absorption 
28. properties of high frequency electromagnetic radiation in the range of 0.5 to 25 GHz . Micromag has been able to integrate the microwire in different materials such as silicon, glass fibers, paints and construction materials, achieving levels of attenuation of the
29.  incident radiation very high.The magnetic sensors developed using microwaves are
30.  based on the operational principles strongly related to its composition and axial 
31. anisotropy through the magnetostriction constant and represented the effect of
32.  a large Barkhausen jump, and giant magnetoimpedance Mateucci effect.
33.