Industry new
Application of high density magnetic materials
With the gradual miniaturization of computers and related peripheral products, the study of magnetic materials for memory storage is gradually moving toward high density. However, due to the increase in density, the magnetic field required to store data bits per unit volume/area also increases. Because of the technical difficulties in the generation of high magnetic fields, the application of high-density magnetic materials faces limitations and bottlenecks.
Recently, Daichi Chiba of Tohoku Laboratories, Tohoku University in Japan, published the results of a research on the use of an applied electric field magnetic material plant to reduce the amount of magnetic field required to access data. This study found that ferrite manufacturers, by applying an electric field to a magnetic memory storage material, can reduce the magnetic field that is required when writing data, and may be applied to the manufacture of ultra-high-density memory.
Daichi et al.'s experiments were first performed on indium arsenide (InAs) containing ferromagnetic manganese (Mn) metal. Ferrite cubes were coated with a thin layer of insulator and metal electrode. Then the arsenic was passed through the magnetic material electrode. Indium applies an electric field. When a 1.5 MV/cm electric field is applied, the magnitude of the magnetic field required to change the polarity of the magnetic moment (for data writing) is one-fifth of that when no electric field is applied. This discovery led to a glimmer of hope for the study of high-density magnetic materials. Cutting magnets However, the project host Hideo Ohno said that because their experiment was conducted at a low temperature of 30K absolute temperature, its discovery can only be regarded as preliminary proof of the feasibility of applying an electric field. If you want to talk about practical applications, cutting cubes can also be verified by experiments conducted at room temperature.
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