Patents by Inventor Dong-Su Son

Dong-Su Son has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10566522
    Abstract: A multilayer thin film for magnetic random access memory that includes thin platinum layers and thin cobalt-copper layers, and more particularly, to a multilayer thin film having magnetic layers including non-magnetic material copper that replaces a portion of the magnetic material cobalt.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: February 18, 2020
    Assignee: SK hynix Inc.
    Inventors: Sang-Ho Lim, Dong-Su Son, Tae-Young Lee, Seong-Rae Lee
  • Patent number: 9705075
    Abstract: The present invention relates to a cobalt (Co) and platinum (Pt)-based multilayer thin film having a novel structure and perpendicular magnetic anisotropy, and to a fabrication method thereof. More specifically, the invention relates to a cobalt and platinum-based multilayer thin film having perpendicular magnetic anisotropy (PMA), which includes thin cobalt layers and thin platinum layers alternately deposited over a substrate, and has an inverted structure in which a thickness of the thin cobalt layers is greater than that of the thin platinum layers, and to a fabrication method thereof. The cobalt and platinum-based multilayer thin film has a new structure in which the thickness of a magnetic thin layer is greater than that of a non-magnetic thin layer. The multilayer thin film may be easily applied as a free layer and a pinned layer in a magnetic tunnel junction by controlling the perpendicular magnetic anisotropy energy depending on the thickness ratio of the layers.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: July 11, 2017
    Assignee: SK Hynix Inc.
    Inventors: Sang Ho Lim, Tae Young Lee, Seong Rae Lee, Dong-Su Son
  • Publication number: 20170133583
    Abstract: A multilayer thin film for magnetic random access memory that includes thin platinum layers and thin cobalt-copper layers, and more particularly, to a multilayer thin film having magnetic layers including non-magnetic material copper that replaces a portion of the magnetic material cobalt.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Inventors: Sang-Ho LIM, Dong-Su SON, Tae-Young LEE, Seong-Rae LEE
  • Publication number: 20160293836
    Abstract: A multilayer thin film for magnetic random access memory that includes thin platinum layers and thin cobalt-copper layers, and more particularly, to a multilayer thin film having magnetic layers including non-magnetic material copper that replaces a portion of the magnetic material cobalt.
    Type: Application
    Filed: March 30, 2015
    Publication date: October 6, 2016
    Inventors: Sang-Ho LIM, Dong-Su SON, Tae-Young LEE, Seong-Rae LEE
  • Publication number: 20150115379
    Abstract: The present invention relates to a cobalt (Co) and platinum (Pt)-based multilayer thin film having a novel structure and perpendicular magnetic anisotropy, and to a fabrication method thereof. More specifically, the invention relates to a cobalt and platinum-based multilayer thin film having perpendicular magnetic anisotropy (PMA), which includes thin cobalt layers and thin platinum layers alternately deposited over a substrate, and has an inverted structure in which a thickness of the thin cobalt layers is greater than that of the thin platinum layers, and to a fabrication method thereof. The cobalt and platinum-based multilayer thin film has a new structure in which the thickness of a magnetic thin layer is greater than that of a non-magnetic thin layer. The multilayer thin film may be easily applied as a free layer and a pinned layer in a magnetic tunnel junction by controlling the perpendicular magnetic anisotropy energy depending on the thickness ratio of the layers.
    Type: Application
    Filed: June 26, 2012
    Publication date: April 30, 2015
    Applicant: SK hynix Inc.
    Inventors: Sang Ho Lim, Tae Young Lee, Seong Rae Lee, Dong-Su Son