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Breakthrough in Magnetic Memory Devices: Samsung Electronics Develops Novel Patent

Strategic Insights

— 2 min read

Samsung Electronics has made significant strides in the field of magnetic memory devices with the development of a novel patent. Filed on November 9, 2022, and published on September 30, 2025, patent 12433171 marks a major advancement in the creation of high-speed and low-voltage memory devices. The patent's inventors, Stuart Papworth Parkin, Ung Hwan Pi, See-Hun Yang, Jiho Yoon, and the corporation Samsung Electronics Co. Ltd., have successfully developed a magnetic memory device capable of controlling the position of a magnetic domain wall in a magnetic track with unprecedented stability and efficiency.

The innovative device comprises a magnetic track that extends in a first direction, with the lower magnetic layer and the upper magnetic layer being antiferromagnetically coupled to each other by a spacer layer. A non-magnetic pattern penetrates the upper magnetic layer and is on the spacer layer, providing a first junction surface that is in contact with a first portion of the upper magnetic layer and a second junction surface that is in contact with a second portion of the upper magnetic layer. This design allows for improved control over the magnetic domain walls, leading to enhanced performance and efficiency.

Key Takeaways:

  • The novel patent 12433171, filed by Samsung Electronics, presents a groundbreaking solution for magnetic memory devices, enabling high-speed and low-voltage operation.
  • The magnetic memory device features a non-magnetic pattern that penetrates the upper magnetic layer, providing a first junction surface and a second junction surface for improved control over the magnetic domain walls.
  • The device's design enables the creation of synthetic antiferromagnetic regions adjacent to each other in the first direction, allowing for antiferromagnetic coupling between the lower magnetic layer and the upper magnetic layer.
  • The patent includes claims for various configurations of the magnetic memory device, including one with synthetic antiferromagnet-ferromagnet-synthetic antiferromagnet (SAF-FM-SAF) bi-lateral junction structures.
  • The inventors propose a magnetic memory device with a conductive line that extends in a first direction, supporting the sequential stacking of a lower magnetic layer, a spacer layer, and an upper magnetic layer on the conductive line.
  • The device also features a read/write unit on the magnetic track, adjacent to the upper magnetic layer, facilitating the manipulation of magnetic moments within the device.
  • The non-magnetic pattern is designed to vertically overlap with a corresponding lower magnetic domain wall of the lower magnetic domain walls in the second direction, demonstrating the innovation's potential for magnetic memory devices.

Statistics:

  • Patent 12433171 was filed on November 9, 2022, and published online on September 30, 2025.
  • The patent features 20 claims, detailing various configurations and characteristics of the magnetic memory device.
  • The device's design enables the creation of high-speed and low-voltage memory devices with improved performance and efficiency.
  • The novel patent marks a significant milestone in the development of magnetic memory devices, offering potential applications in the field of electronic devices and memory storage.

Sources:

  • Parkin, S. P., Pi, U. H., Yang, S. H., Yoon, J. (2025, September 30). Magnetic memory devices. U.S. Patent Number 12433171.

URL: https://ppubs.uspto.gov/pubwebapp/external.html?q=(12433171)&db=USPAT&type=ids (desktop use only)

  • Samsung Electronics Co. Ltd.
  • NewsRx LLC (2025). Oct 21) -- Asia Business Newsweekly.

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