18048455. MRAM DEVICE WITH OCTAGON PROFILE simplified abstract (INTERNATIONAL BUSINESS MACHINES CORPORATION)

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MRAM DEVICE WITH OCTAGON PROFILE

Organization Name

INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor(s)

Oscar Van Der Straten of Guilderland Center NY (US)

Chih-Chao Yang of Glenmont NY (US)

Koichi Motoyama of Clifton Park NY (US)

MRAM DEVICE WITH OCTAGON PROFILE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18048455 titled 'MRAM DEVICE WITH OCTAGON PROFILE

Simplified Explanation

The abstract describes a magnetic tunnel junction cell with an octagon profile and vertically aligned layers, including a top electrode, a free layer, a tunneling barrier, a reference layer, and a bottom electrode with tapered side surfaces.

  • The magnetic tunnel junction cell has an octagon profile with vertically aligned layers.
  • The bottom electrode has a tapered side surface with a width at the upper surface greater than at the lower surface.
  • The reference layer has vertical side surfaces perpendicular to the upper surface of the bottom electrode.
  • The free layer and tunneling barrier also have tapered side surfaces with the same angle, and the width at the upper surface is less than at the lower surface.
      1. Potential Applications

- Data storage devices - Magnetic sensors - Spintronics applications

      1. Problems Solved

- Improved performance and efficiency of magnetic tunnel junction cells - Enhanced data storage capabilities - Increased sensitivity of magnetic sensors

      1. Benefits

- Higher data storage density - Faster data access speeds - Improved reliability and stability

      1. Potential Commercial Applications of this Technology
        1. Enhanced Magnetic Tunnel Junction Cells for Advanced Data Storage Solutions
      1. Possible Prior Art

There may be prior art related to magnetic tunnel junction cells with tapered side surfaces and vertically aligned layers, but specific examples are not provided in the abstract.

        1. Unanswered Questions
        2. How does the angle of the tapered side surfaces impact the performance of the magnetic tunnel junction cell?

The abstract does not specify the exact angle of the tapered side surfaces and how it affects the functionality of the device.

        1. What materials are typically used for the layers in magnetic tunnel junction cells?

The abstract does not mention the specific materials used for the layers in the described magnetic tunnel junction cell.


Original Abstract Submitted

A magnetic tunnel junction cell, a cross section with octagon profile, vertically aligned layers of a top electrode, a free layer, a tunneling barrier, a reference layer, a bottom electrode with tapered side surface with a width at an upper surface greater than a width at a lower surface, the reference layer with vertical side surface perpendicular to an upper horizontal surface of the bottom electrode, the free layer and the tunneling barrier, each include a tapered side surface of the same angle, and each include a width at an upper surface less than a width at a lower surface. Forming a bottom electrode of a magnetic tunnel junction cell with a tapered side surface with a width at an upper surface greater than a width at a lower surface, forming a reference layer with vertical side surface perpendicular to an upper surface of the bottom electrode.

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