17550464. PARAMAGNETIC HEXAGONAL METAL PHASE COUPLING SPACER simplified abstract (INTERNATIONAL BUSINESS MACHINES CORPORATION)

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PARAMAGNETIC HEXAGONAL METAL PHASE COUPLING SPACER

Organization Name

INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor(s)

Alexander Reznicek of Troy NY (US)

MATTHIAS GEORG Gottwald of New Rochelle NY (US)

Stephen L Brown of Carmel NY (US)

PARAMAGNETIC HEXAGONAL METAL PHASE COUPLING SPACER - A simplified explanation of the abstract

This abstract first appeared for US patent application 17550464 titled 'PARAMAGNETIC HEXAGONAL METAL PHASE COUPLING SPACER

Simplified Explanation

The abstract describes a magnetic tunnel junction structure that includes a coupling spacer made of a paramagnetic hexagonal metal phase material. The spacer is composed of a magnetic metal (Me) and a metal (X) that alloys with Me and dilutes its magnetic moment. The MeX coupling spacer is formed by creating a material stack with alternating layers of Me and X, and then thermally soaking the stack.

  • The patent application describes a magnetic tunnel junction structure with a unique coupling spacer.
  • The coupling spacer is made of a paramagnetic hexagonal metal phase material.
  • The spacer includes a magnetic metal (Me) and a metal (X) that alloys with Me and reduces its magnetic moment.
  • The MeX coupling spacer is formed by creating a material stack with alternating layers of Me and X.
  • The material stack is then thermally soaked to form the coupling spacer.

Potential applications of this technology:

  • Magnetic storage devices, such as hard disk drives and magnetic random-access memory (MRAM).
  • Spintronics, which utilize the spin of electrons for information processing.
  • Magnetic sensors and detectors.
  • Magnetic field-based imaging techniques, such as magnetic resonance imaging (MRI).

Problems solved by this technology:

  • Enhances the performance and efficiency of magnetic tunnel junction structures.
  • Provides a reliable and stable coupling spacer material.
  • Reduces the magnetic moment of the magnetic metal, allowing for better control and manipulation of the magnetic properties.

Benefits of this technology:

  • Improved data storage and processing capabilities in magnetic devices.
  • Increased sensitivity and accuracy in magnetic sensors and detectors.
  • Enhanced imaging quality and resolution in magnetic field-based imaging techniques.
  • Enables the development of more advanced and efficient spintronics devices.


Original Abstract Submitted

A top pinned SAF-containing magnetic tunnel junction structure is provided that contains a coupling spacer composed of a paramagnetic hexagonal metal phase material that has a stoichiometric ratio of MeX or MeX, wherein Me is a magnetic metal having a magnetic moment and X is a metal that alloys with Me in a hexagonal phase and dilutes the magnetic moment of Me. In embodiments in which a MeX coupling spacer is present, Me is cobalt, and X is vanadium, niobium, tantalum, molybdenum or tungsten. In embodiments in which a MeX coupling spacer is present, Me is iron and X is tantalum or tungsten. The coupling spacer is formed by providing a material stack including at least a precursor paramagnetic hexagonal metal phase material forming multilayered structure that includes alternating layers of magnetic metal, Me, and metal, X, and then thermally soaking the material stack.

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