In the principle of magnetic power generation, the thermoelectromotive force is proportional to the temperature difference and the magnitude of magnetization. Scientists previously believed that only ferromagnetic materials with strong magnetic properties will cause this phenomenon. Recently, a research team at the University of Tokyo in Japan discovered that there is also a huge spontaneous thermo-electromotive force effect in antiferromagnetic manganese alloys. This discovery makes it possible to apply thermal power generation of magnetic materials.
The method of generating electricity directly from heat is called thermal power generation. Such as the use of waste heat generated by automobile engines, computer servers, etc.; or the use of thermal energy such as hot springs, solar energy, and geothermal power to generate electricity. The thermoelectric conversion element can convert thermal energy into electrical energy. The basic principle is that there is an electromotive force generated at both ends of a material having a temperature difference. Using the power generation device developed by this principle, the greater the temperature difference, the greater the amount of electricity generated. Because there is no extra moving parts, the power generation device can also achieve a small size and long life.
The power generation elements currently used are non-magnetic semiconductor materials. Since the direction of temperature difference and the extraction direction of the electromotive force are the same, large-scale three-dimensional structures have to be made, leading to complex equipment manufacturing engineering and cost surges. With a thermoelectric element using a magnetic material, the temperature difference and the magnetization and the electromotive force are perpendicular to each other, so that the original structure of the thermoelectromotive force can be designed to be relatively simple. Manganese alloy consists of inexpensive non-toxic elements, easy to crystal growth, is a more practical material.
This time, the research team broke the rules and discovered for the first time antiferromagnetic magnetization with 1% or less of magnetization. It has an immense thermo-electromotive force effect that is equal to or greater than that of ferromagnetism. The principle of using the magnetic properties of matter is different from the principle of temperature difference in the past. . Hitherto, thermoelectric materials using ferromagnetic materials have been considered to be impossible to achieve high integration due to the effects of magnetic flux leakage. The anti-ferromagnetic overall spin has almost no magnetic flux leakage, making it possible to achieve high integration and high output that was previously considered impossible.
This achievement was recently published online in Nature Physics. The research team will continue to study antiferromagnetic components in the future to find substances that are more suitable for high thermal EMF. (Reporter Chen Chao)
Magnetic Track For Stretch Ceiling
Magnetic rail for stretch ceiling is an innovative mounting system for securing and installing stretched ceilings. This system utilizes magnetic rails and magnetic forces, making installation and adjustment of stretched ceilings very simple and convenient.
This magnetic rail for stretchable ceiling is usually made of aluminum alloy and has high strength and durability. The rails are attached to magnetic strips, while the stretched ceiling is magnetically attached to the strips. This design eliminates traditional fixing methods such as screws or clamps, making the installation process faster and without causing damage to the ceiling surface.
Magnetic System For Flexible Ceiling has several advantages. First, the installation process does not require additional tools or special skills, reducing the time and cost of installation. Second, the Magnetic Track allows the stretched ceiling to be flexibly adjusted and moved to suit different design requirements. In addition, with no visible fixed elements, the ceiling takes on a smoother and more seamless appearance.
Magnetic Strip For Stretched Ceiling suitable for a variety of indoor locations such as residential, commercial space and office buildings. It can be used to decorate suspended ceilings, walls and special design elements, giving a modern, simple and elegant look to the space.
In summary, Magnetic Channel For Elastic Ceiling is an innovative installation system that uses magnetic rails and magnetic forces to hold the stretched ceiling firmly in place. It offers convenient, flexible and aesthetically pleasing solutions for a variety of interior design needs.
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