Patents by Inventor Erwan Gapihan

Erwan Gapihan 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).

  • Publication number: 20180240967
    Abstract: A method of forming a memory device that in one embodiment may include forming a magnetic tunnel junction on a first electrode using an electrically conductive mask and subtractive etch method. Following formation of the magnetic tunnel junction, at least one dielectric layer is deposited to encapsulate the magnetic tunnel junction. Ion beam etching/Ion beam milling may then remove the portion of the at least one dielectric layer that is present on the electrically conductive mask, wherein a remaining portion of the at least one dielectric layer is present over the first electrode. A second electrode may then be formed in contact with the electrically conductive mask.
    Type: Application
    Filed: April 18, 2018
    Publication date: August 23, 2018
    Applicants: INTERNATIONAL BUSINESS MACHINES CORPORATION, CROCUS TECHNOLOGY
    Inventors: Michael C. Gaidis, Erwan Gapihan, Rohit Kilaru, Eugene J. O'Sullivan
  • Patent number: 10003014
    Abstract: A method of forming a memory device that in one embodiment may include forming a magnetic tunnel junction on a first electrode using an electrically conductive mask and subtractive etch method. Following formation of the magnetic tunnel junction, at least one dielectric layer is deposited to encapsulate the magnetic tunnel junction. Ion beam etching/Ion beam milling may then remove the portion of the at least one dielectric layer that is present on the electrically conductive mask, wherein a remaining portion of the at least one dielectric layer is present over the first electrode. A second electrode may then be formed in contact with the electrically conductive mask.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: June 19, 2018
    Assignees: INTERNATIONAL BUSINESS MACHINES CORPORATION, CROCUS TECHNOLOGY
    Inventors: Michael C. Gaidis, Erwan Gapihan, Rohit Kilaru, Eugene J. O'Sullivan
  • Patent number: 9847476
    Abstract: A magnetoresistive memory cell includes a magnetoresistive tunnel junction stack and a dielectric encapsulation layer covering sidewall portions of the stack and being opened over a top of the stack. A conductor is formed in contact with a top portion of the stack and covering the encapsulation layer. A magnetic liner encapsulates the conductor and is gapped apart from the encapsulating layer covering the sidewall portions of the stack.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: December 19, 2017
    Assignees: International Business Machines Corporation, Crocus Technology
    Inventors: Anthony J. Annunziata, Erwan Gapihan
  • Patent number: 9728714
    Abstract: A magnetoresistive memory cell includes a magnetoresistive tunnel junction stack and a dielectric encapsulation layer covering sidewall portions of the stack and being opened over a top of the stack. A conductor is formed in contact with a top portion of the stack and covering the encapsulation layer. A magnetic liner encapsulates the conductor and is gapped apart from the encapsulating layer covering the sidewall portions of the stack.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: August 8, 2017
    Assignees: International Business Machines Corporation, Crocus Technology
    Inventors: Anthony J. Annunziata, Erwan Gapihan
  • Publication number: 20170155041
    Abstract: A magnetoresistive memory cell includes a magnetoresistive tunnel junction stack and a dielectric encapsulation layer covering sidewall portions of the stack and being opened over a top of the stack. A conductor is formed in contact with a top portion of the stack and covering the encapsulation layer. A magnetic liner encapsulates the conductor and is gapped apart from the encapsulating layer covering the sidewall portions of the stack.
    Type: Application
    Filed: February 14, 2017
    Publication date: June 1, 2017
    Inventors: Anthony J. Annunziata, Erwan Gapihan
  • Patent number: 9614146
    Abstract: A magnetoresistive memory cell includes a magnetoresistive tunnel junction stack and a dielectric encapsulation layer covering sidewall portions of the stack and being opened over a top of the stack. A conductor is formed in contact with a top portion of the stack and covering the encapsulation layer. A magnetic liner encapsulates the conductor and is gapped apart from the encapsulating layer covering the sidewall portions of the stack.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: April 4, 2017
    Assignees: INTERNATIONAL BUSINESS MACHINES CORPORATION, CROCUS TECHNOLOGY
    Inventors: Anthony J. Annunziata, Erwan Gapihan
  • Publication number: 20160336507
    Abstract: A magnetoresistive memory cell includes a magnetoresistive tunnel junction stack and a dielectric encapsulation layer covering sidewall portions of the stack and being opened over a top of the stack. A conductor is formed in contact with a top portion of the stack and covering the encapsulation layer. A magnetic liner encapsulates the conductor and is gapped apart from the encapsulating layer covering the sidewall portions of the stack.
    Type: Application
    Filed: July 28, 2016
    Publication date: November 17, 2016
    Inventors: Anthony J. Annunziata, Erwan Gapihan
  • Publication number: 20160336506
    Abstract: A magnetoresistive memory cell includes a magnetoresistive tunnel junction stack and a dielectric encapsulation layer covering sidewall portions of the stack and being opened over a top of the stack. A conductor is formed in contact with a top portion of the stack and covering the encapsulation layer. A magnetic liner encapsulates the conductor and is gapped apart from the encapsulating layer covering the sidewall portions of the stack.
    Type: Application
    Filed: July 28, 2016
    Publication date: November 17, 2016
    Inventors: Anthony J. Annunziata, Erwan Gapihan
  • Patent number: 9472749
    Abstract: A magnetoresistive memory cell includes a magnetoresistive tunnel junction stack and a dielectric encapsulation layer covering sidewall portions of the stack and being opened over a top of the stack. A conductor is formed in contact with a top portion of the stack and covering the encapsulation layer. A magnetic liner encapsulates the conductor and is gapped apart from the encapsulating layer covering the sidewall portions of the stack.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: October 18, 2016
    Assignees: INTERNATIONAL BUSINESS MACHINES CORPORATION, CROCUS TECHNOLOGY
    Inventors: Anthony J. Annunziata, Erwan Gapihan
  • Publication number: 20160276579
    Abstract: A method of forming a memory device that in one embodiment may include forming a magnetic tunnel junction on a first electrode using an electrically conductive mask and subtractive etch method. Following formation of the magnetic tunnel junction, at least one dielectric layer is deposited to encapsulate the magnetic tunnel junction. Ion beam etching/Ion beam milling may then remove the portion of the at least one dielectric layer that is present on the electrically conductive mask, wherein a remaining portion of the at least one dielectric layer is present over the first electrode. A second electrode may then be formed in contact with the electrically conductive mask.
    Type: Application
    Filed: June 1, 2016
    Publication date: September 22, 2016
    Inventors: Michael C. Gaidis, Erwan Gapihan, Rohit Kilaru, Eugene J. O'Sullivan
  • Patent number: 9324937
    Abstract: A thermally assisted magnetoresistive random access memory (TAS-MRAM) device includes a magnetic tunnel junction interposed between a first electrical contact and a second electrical contact. The TAS-MRAM device further includes a dielectric layer that is formed on an upper surface of the first electrical contact and that encapsulates the second electrical contact. The dialectic layer has at least one vacuum cavity between an adjacent outer wall of the magnetic tunnel junction and the dielectric layer.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 26, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anthony J. Annunziata, Erwan Gapihan
  • Publication number: 20150372225
    Abstract: A method of forming a memory device that in one embodiment may include forming a magnetic tunnel junction on a first electrode using an electrically conductive mask and subtractive etch method. Following formation of the magnetic tunnel junction, at least one dielectric layer is deposited to encapsulate the magnetic tunnel junction. Ion beam etching/Ion beam milling may then remove the portion of the at least one dielectric layer that is present on the electrically conductive mask, wherein a remaining portion of the at least one dielectric layer is present over the first electrode. A second electrode may then be formed in contact with the electrically conductive mask.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 24, 2015
    Inventors: Michael C. Gaidis, Erwan Gapihan, Rohit Kilaru, Eugene J. O'Sullivan
  • Publication number: 20150270481
    Abstract: A magnetoresistive memory cell includes a magnetoresistive tunnel junction stack and a dielectric encapsulation layer covering sidewall portions of the stack and being opened over a top of the stack. A conductor is formed in contact with a top portion of the stack and covering the encapsulation layer. A magnetic liner encapsulates the conductor and is gapped apart from the encapsulating layer covering the sidewall portions of the stack.
    Type: Application
    Filed: March 20, 2014
    Publication date: September 24, 2015
    Applicants: Crocus Technology, International Business Machines Corporation
    Inventors: Anthony J. Annunziata, Erwan Gapihan
  • Patent number: 8411500
    Abstract: The present disclosure concerns a magnetic element to be written using a thermally-assisted switching write operation comprising a magnetic tunnel junction formed from a tunnel barrier being disposed between first and second magnetic layers, said second magnetic layer having a second magnetization which direction can be adjusted during a write operation when the magnetic tunnel junction is heated at a high threshold temperature; an upper current line connected at the upper end of the magnetic tunnel junction; and a strap portion extending laterally and connected to the bottom end of the magnetic tunnel junction; the magnetic device further comprising a bottom thermal insulating layer extending substantially parallel to the strap portion and arranged such that the strap portion is between the magnetic tunnel junction and the bottom thermal insulating layer. The magnetic element allows for reducing heat losses during the write operation and has reduced power consumption.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: April 2, 2013
    Assignee: Crocus Technology SA
    Inventors: Erwan Gapihan, Kenneth Mackay, Jason Reid
  • Patent number: 8289765
    Abstract: A magnetic random access memory (MRAM) cell with a thermally assisted writing procedure comprising a magnetic tunnel junction formed from a magnetic storage layer, a reference layer, and an insulating layer inserted between the reference layer and the storage layer; and a first strap portion laterally connecting one end of the magnetic tunnel junction to a first selection transistor; wherein the cell further comprises a second strap portion extending opposite to the first strap portion and connecting laterally said one end of the magnetic tunnel junction to a second selection transistor, and in that said first and second strap portions being adapted for passing a portion of current via the first and second selection transistors. The disclosed cell has lower power consumption than conventional MRAM cells.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: October 16, 2012
    Assignee: Crocus Technology SA
    Inventors: Virgile Javerliac, Erwan Gapihan, Mourad El Baraji
  • Publication number: 20120008383
    Abstract: The present disclosure concerns a magnetic element to be written using a thermally-assisted switching write operation comprising a magnetic tunnel junction formed from a tunnel barrier being disposed between first and second magnetic layers, said second magnetic layer having a second magnetization which direction can be adjusted during a write operation when the magnetic tunnel junction is heated at a high threshold temperature; an upper current line connected at the upper end of the magnetic tunnel junction; and a strap portion extending laterally and connected to the bottom end of the magnetic tunnel junction; the magnetic device further comprising a bottom thermal insulating layer extending substantially parallel to the strap portion and arranged such that the strap portion is between the magnetic tunnel junction and the bottom thermal insulating layer. The magnetic element allows for reducing heat losses during the write operation and has reduced power consumption.
    Type: Application
    Filed: June 7, 2011
    Publication date: January 12, 2012
    Applicant: CROCUS TECHNOLOGY SA
    Inventors: Erwan Gapihan, Kenneth Mackay, Jason Reid
  • Publication number: 20100208516
    Abstract: A magnetic random access memory (MRAM) cell with a thermally assisted writing procedure comprising a magnetic tunnel junction formed from a magnetic storage layer, a reference layer, and an insulating layer inserted between the reference layer and the storage layer; and a first strap portion laterally connecting one end of the magnetic tunnel junction to a first selection transistor; wherein the cell further comprises a second strap portion extending opposite to the first strap portion and connecting laterally said one end of the magnetic tunnel junction to a second selection transistor, and in that said first and second strap portions being adapted for passing a portion of current via the first and second selection transistors. The disclosed cell has lower power consumption than conventional MRAM cells.
    Type: Application
    Filed: February 19, 2010
    Publication date: August 19, 2010
    Applicant: CROCUS TECHNOLOGY SA
    Inventors: Virgile JAVERLIAC, Erwan GAPIHAN, Mourad EL BARAJI