New high-sensitivity magnetic materials make electronics temperature-sensitive


According to the BBC on March 4, researchers in the United States have discovered a highly sensitive magnetic material that can alter computer hard drives and energy storage devices.

With a slight change in temperature, the electromagnetic material can change its magnetic properties. University of California, San Diego, professor Ivan McGrath Schuler said: "No other material that people know of can do this. It matters, and we can control it." Schuler presented the findings at a meeting of the American Physical Society in Denver.

The magnetic material contains nickel and vanadium oxide and is extremely sensitive to temperature. Schuler said: "We can control the magnetism with tiny temperature changes, without going through the magnetic field at all. In principle, we can also control it with voltage or current. At low temperatures, this oxide acts as an insulator, and at high temperatures becomes a metal (conductor). It's a strange material in between."

Schuler says the new material holds promise for improving current magnetic memory; It can also improve the circuit to deal with dramatic changes in current under special circumstances such as lightning.

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