Ferromagnetic ferromagnetic, refers to a state of a magnetic material, having a spontaneous magnetization phenomenon. Each material to the most well-known iron magnet motor, hence the name. Some materials under the action of an external magnetic field and obtained after magnetization, even if the external magnetic field disappears, still able to maintain its state magnetization and magnetic, i.e., the so-called phenomenon of spontaneous magnetization. All permanent magnets have ferromagnetic or ferrimagnetic. This concept includes substantially ferromagnetic any display in the absence of an external magnetic field substance. Someone still has to use this concept. But with different magnetic materials and magnetic display more profound understanding of the concept of scholars made more precise definition. Only a matter of primitive cell all the magnetic ions are pointing to its magnetic orientation is known to be ferromagnetic. If only part of the ions toward its magnetic field direction, called ferrimagnetic. If the direction of its magnetic ions referred to just cancel each other (although all the magnetic ions only refer to two opposite directions) is called antiferromagnetic. The presence of a magnetic substance phenomenon critical temperature, will occur at this temperature. For ferromagnetic and ferrimagnetic speaker magnets, this temperature is called the Curie temperature; for antiferromagnetic material, this temperature is called Neil temperature. Some people think that attraction between the magnet and the ferromagnetic material is magnetic earliest human understanding. NdFeB magnets NdFeB (Neodymium magnet) is also known as NdFeB magnets, and its formula is Nd2Fe14B, the permanent magnet is an artificial, so far has the strongest magnetic force of the permanent magnets. Neodymium magnets are Sumitomo Special Metals Corporation Sagawa, who live in toys in 1982 with the invention of the magnet, which is mainly known by its chemical formula, etc. from neodymium, iron and boron chemical elements of the composition. In many areas it is possible to replace the traditional magnet iron magnet, alnico and samarium cobalt magnets such as motors, equipment and instrumentation, automotive, petrochemical industry and magnetic health products. Can produce a variety of shapes: such as disc magnets, ring magnets, rectangular magnets, arc-shaped magnets and other magnets. Neodymium magnets have a strong magnetic field has been widely used in electronic products, such as hard drives, mobile phones, headsets and more. Triangle Magnet | Jiangsu Magnet | New Tong Xin magnetic provided by the Dongguan City, Tong Xin magnetic Limited. Xin Tong, Dongguan City, the new magnetic Limited (www.dgxtxmagnet.com/) strong, credible, in Dongguan, Guangdong magnetic materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the new Tong Xin magnetic and you hand into the brilliant, for a better future!