Magnetic induction B and magnetic polarization J Practice and theory have proved that when a ferromagnetic or ferrimagnetic substance is magnetized in a magnetic field, in addition to the magnetic field in the substance, because the magnetic moments of the atoms of the ferromagnetic substance turn to the direction of the external magnetic field, it [...]
Permanent magnets in Apple's magnetic wireless charger Since the iPhone 8 in 2017, Apple has added a wireless charging function to all iPhone models, which is similar to other mobile phone wireless charging methods. It starts charging when placed on a wireless charger. This wireless charging relies on the transmitter coil and Accepting the alignment [...]
Magnetization direction and orientation direction The magnetism of permanent magnets mainly comes from its crystal structure that is easily magnetized. It can obtain extremely high magnetism under the action of a strong external magnetic field, and its magnetism will not disappear after the external magnetic field disappears. Therefore, "magnetization" is NdFeB A key step for [...]
The special metal bond structure of iron cobalt nickel leads to their paramagnetism? Yes, metals such as iron cobalt nickel have special electronic structures that allow them to be strongly magnetic. In these metals, each atom has unpaired electrons in its outer shell that can interact to create magnetism. Such magnetism is called paramagnetism because [...]
The Difference Between Maximum Working Temperature and Curie Temperature of Magnet Maybe some people think the maximum working temperature of magnet is same as its Curie temperature. Actually, this is a mistake. The magnetic material can be divided into 5 kinds: ferromagnetism, ferrimagnetism, anti-ferromagnetism, paramagnetism, diamagnetism. Iron, Cobalt and Nickel are ferromagnetic material, also permanent [...]
Ferromagnetism, magnetic domains Looking back to the beginning of our thought experiment, magnetic fields may only be produced by a current. Taking the definition of current as a flow of electrons, electrons orbiting an atom should create a current and thus a magnetic field! If every atom has electrons is everything magnetic? YES! All matter, including [...]
