The machining process of green laser pointer

The laser light of  green laser pointer  can be used in the tall building, park, plaza and theater
The main requirements on the magnetic properties of magnetic recording media materials: (1) appropriate and high coercivity Hc, (2) high saturation magnetization Ms, (3) high remanence ratio, (4) high stability. The application of magnetic recording media materials are: (1) ferrite magnetic recording materials, such as γ-ferric oxide (gamma-Fe2O3). (2) of the metal magnetic film magnetic recording materials, such as iron - cobalt (Fe-Co) alloy film. (3) Department of barium ferrite (of BaFe12O19) perpendicular magnetic recording materials. Requirements are: (1) a high magnetic permeability μ, (2) high saturation magnetization Ms, (3) low coercivity Hc of the magnetic properties of magnetic recording head materials, (4) high magnetic stability. The company will import the advance innovative concept of green laser pointer .
Application of the magnetic recording head materials: (1) ferrite head materials, such as manganese - zinc - ferrite (Mn, Zn) and Fe2O4 system, etc., (2) high hardness magnetic metal head material, such as iron - nickel - niobium (Fe-Ni-Nb) system magnetic alloy. (3) The head amorphous materials, such as iron - nickel - boron (Fe-Ni-B) Amorphous alloy and so on. The magnetic storage materials, magnetic materials used in the computer memory. Earlier application is a rectangular hysteresis loop close to the moment magnetic materials, the use of two remanence states + Br-Br, the computer "a" and "0" state, re-use of the coincidence of the two current can be write "(of Wx, Wy) and read (Rx, Ry) of the binary system of" 1 "and" 0 "(Figure 4). The laser light of  led flash light  can be used in the tall building, park, plaza and theater.
The magnetic properties of the moment magnetic material requirements are: (1) high remanence Br / of Bm, low coercivity Hc, (3) short switching time, (4) a high signal / noise ratio. Moments of magnetic materials can be applied: (1) The ferrite core material, such as Mn - Mg ferrite (Mn, Mg) with Fe2O4 system, etc., (2) metal magnetic film material, such as iron - nickel (Fe-Ni metal magnetic film) is. The giant magnetoresistance materials is under study and test a new type of magnetic storage materials, the magnetic memory compared with the current application of the semiconductor magnetic memory characteristics and advantages, and thus subject to a wide range of attention. Magnetic microwave materials are commonly used in microwave electronics technology materials. Microwave electronics technology, radar, satellite communications, electronic warfare and radio astronomy are important. The fault status of green laser pointer should be supervised from time to time.
In these applications generally want to apply the three main types of magnetic materials. The first type is the rotating magnetic materials, applied to a variety of positive and negative direction of propagation characteristics of nonreciprocal microwave devices, such as the impedance of the positive and negative direction of propagation is very different from the rotating magnetic isolators and rotation of the ring line, etc., used gyromagnetic materials gyromagnetic ferrite material with high spin magnetic resistivity, such as garnet-yttrium ferrite (Y3Fe5O12) system, magnetoplumbite type barium ferrite (of BaFe12O19) system, and so on. The second category is the magnetic microwave absorbing materials, used in a variety of absorption of microwave devices and equipment, the magnetic microwave absorbing materials with high electromagnetic wave absorption coefficient and wide absorption band of electromagnetic wave. The machining process of green laser pointer is at the world’s level.
Composite absorbing materials, the magnetic metal powder or film for the group structure Hexagonal Ferrite application in this regard. The third category is a variety of applied magnetic field, microwave tubes such as magnetrons, traveling wave tubes, backward wave oscillator and free electron maser used in permanent magnet materials. The magneto-optical material is used in a variety of laser, optoelectronics and Photonics is developing magneto-optical effect devices used in magnetic materials. And the magnetic properties of the magneto-optical materials are: (1) high magneto-optical effects, such as high Faraday rotation and Kerr magneto-optical rotation angle, (2) magneto-optical loss, (3) wide magneto-optical effect band, (4) high stability. The drawing of green laser pointer is needed during the meeting. The two parties are negotiating some details of green laser pointer agreement.