Flexible write head stores data directly on components

Flexible write head for magnetic recording on hard magnetic materials. The flexible core has trapezoidal poles, focusing the head’s write field. (Photo: Piriya Taptimthong, IMPT)

IMPT | Researchers of the Institute of Micro Production Technology (IMPT) developed a magnetic data storage, enabling information to be stored directly on the surface of non-magnetic components.

Modern Industry 4.0-compliant data networking requires the presence of distributed data storage units. The most crucial factors are their reliability and re-writability. Current data storage technologies suit these needs to only a limited extent. 

In this respect, IMPT developed a novel magnetic storage technology. The flexible write head remains operable, even if exposed to vibrations or dust particles. In contrast to conventional write heads, the novel one has a flexible magnetic core which is more robust against mechanical influences.

The coercivity enhances the stability of the stored data considerably. To develop an easily writable storage medium with high coercivity, the researchers used the effect of heat-assisted magnetic recording (HAMR). By using a laser beam heating the storage medium locally, the flexible write head achieves a storage density of up to 98 kbit per square centimetre.

by Piriya Taptimthong

Image gallery for this article

  • Flexible write head for magnetic recording on hard magnetic materials. The flexible core has trapezoidal poles, focusing the head’s write field. (Photo: Piriya Taptimthong, IMPT)
  • Flexible write head with integrated HAMR module. The laser beam is emitted by the laser module (green) and is focused and positioned by means of opto-mechanic systems. (Photo: Piriya Taptimthong, IMPT)
  • Data tracks written by the flexible write head. Heat-assisted magnetic recording (HAMR) achieves much higher data storage densities. (Photo: Piriya Taptimthong, IMPT)
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