Patents by Inventor Chirag Garg

Chirag Garg 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: 11925124
    Abstract: A magnetic structure, a magnetic device incorporating the magnetic structure and a method for providing the magnetic structure are described. The magnetic structure includes a magnetic layer, a templating structure and a resistive insertion layer. The magnetic layer includes a Heusler compound and has a perpendicular magnetic anisotropy energy exceeding an out-of-plane demagnetization energy. The templating structure has a crystal structure configured to template at least one of the Heusler compound and the resistive insertion layer. The magnetic layer is on the templating structure. The resistive insertion layer is configured to reduce magnetic damping for the Heusler compound and allow for templating of the Heusler compound.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: March 5, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaewoo Jeong, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Mahesh Samant, Ikhtiar, Dmytro Apalkov
  • Publication number: 20230413681
    Abstract: A magnetic random access memory (MRAM) stack, a method of fabricating a MRAM stack, a MRAM array, and a computer system. The MRAM stack includes a first magnetic layer comprising a Heusler compound. The MRAM stack also includes one or more seed layers including a templating structure having a crystalline structure configured to template the Heusler compound. The magnetic layer is formed over the templating structure. The MRAM stack also includes a chromium (Cr) layer formed under the templating structure. The Cr layer is configured to enhance a tunnel magnetoresistance (TMR) of the MRAM stack.
    Type: Application
    Filed: June 17, 2022
    Publication date: December 21, 2023
    Inventors: Panagiotis Charilaos Filippou, Chirag Garg, See-Hun Yang, Mahesh Samant, . Ikhtiar, Jaewoo Jeong
  • Patent number: 11804321
    Abstract: A device including a templating structure and a magnetic layer on the templating structure is described. The templating structure includes D and E. A ratio of D to E is represented by D1-xEx, with x being at least 0.4 and not more than 0.6. E includes a main constituent. The main constituent includes at least one of Al, Ga, and Ge. Further, E includes at least fifty atomic percent of the main constituent. D includes at least one constituent that includes Ir, D includes at least 50 atomic percent of the at least one constituent. The templating structure is nonmagnetic at room temperature. The magnetic layer includes at least one of a Heusler compound and an L10 compound, the magnetic layer being in contact with the templating structure.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: October 31, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaewoo Jeong, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Stuart Stephen Papworth Parkin, Mahesh Samant
  • Publication number: 20230320231
    Abstract: A magnetoresistive random-access memory cell includes a templating layer. The templating layer includes a binary alloy having an alternating layer lattice structure. The cell further includes a half metallic Heusler layer including a half metallic Heusler material having a tetragonal lattice structure. The half metallic Heusler layer is located outward of the templating layer, and has a Heusler in-plane lattice constant that is different from an in-plane lattice constant in a cubic form of the half metallic Heusler material. A tunnel barrier is located outward of the half metallic Heusler layer, and a magnetic layer is located outward of the tunnel barrier.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Inventors: SERGEY FALEEV, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Mahesh Samant, Jaewoo Jeong
  • Publication number: 20230317129
    Abstract: A magnetoresistive random-access memory cell includes a templating layer. The templating layer includes a binary alloy having an alternating layer lattice structure. The cell further includes a half metallic half-Heusler layer including a half metallic half-Heusler material having a tetragonal lattice structure. The half metallic half-Heusler layer is located outward of the templating layer, and has a half-Heusler in-plane lattice constant that is different from an in-plane lattice constant in a cubic form of the half metallic half-Heusler material. A tunnel barrier is located outward of the half metallic half-Heusler layer, and a magnetic layer is located outward of the tunnel barrier.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Inventors: SERGEY FALEEV, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Mahesh Samant, Jaewoo Jeong
  • Patent number: 11751486
    Abstract: A device including a templating structure and a magnetic layer is described. The templating structure includes D and E. A ratio of D to E is represented by D1-xEx, with x being at least 0.4 and not more than 0.6. E includes a main constituent. The main constituent includes at least one of Al, Ga, and Ge. E includes at least fifty atomic percent of the main constituent. D includes at least one constituent that includes Ir. D includes at least 50 atomic percent of the at least one constituent. The magnetic layer is on the templating structure and includes at least one of a Heusler compound and an L10 compound. The magnetic layer is in contact with the templating structure and being magnetic at room temperature.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: September 5, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaewoo Jeong, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Stuart Stephen Papworth Parkin, Mahesh Samant
  • Publication number: 20230180624
    Abstract: Integrated circuit devices may include a first magnetic layer, a second magnetic layer, and a tunnel barrier layer that is between the first magnetic layer and the second magnetic layer and has a hexagonal crystal structure. The first magnetic layer may include a multi-layered structure of nCo/mX that is magnetic at room temperature and has a hexagonal crystal structure, and X may be Ni, Ag, Au, Pt, Pd or Cu. n and m are each numbers of atomic layers, n may range from 0.5 to 3.5, and m may range from 0.5 to 4.5.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 8, 2023
    Inventors: Sergey Faleev, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Mahesh Samant, Jaewoo Jeong
  • Patent number: 11665979
    Abstract: A method for providing a magnetic device and the magnetic device so provided are described. The magnetic device includes a magnetic layer having a surface. In some aspects, the magnetic layer is a free layer, a reference layer, or a top layer thereof. A tunneling barrier layer is deposited on the magnetic layer. At least a portion of the tunneling barrier layer adjacent to the magnetic layer is deposited at a deposition angle of at least thirty degrees from a normal to the surface of the magnetic layer. In some aspects, the deposition angle is at least fifty degrees.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: May 30, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaewoo Jeong, Mahesh G. Samant, Yari Ferrante, Panagiotis Charilaos Filippou, Chirag Garg, Stuart Stephen Papworth Parkin
  • Publication number: 20230116592
    Abstract: A device is provided. The device includes a multi-layered structure that is non-magnetic at room temperature, the multi-layered structure comprising alternating layers of Co and E, wherein E comprises at least one other element selected from the group consisting of Ge, Ga, Sn and Al, wherein a composition of the multi-layered structure is represented by Co1?xEx, with x being in a range from 0.42 to 0.55. The device also includes a combined layer provided in contact with the multi-layered structure, the combined layer including an insertion layer comprising Co or Fe or Mn or Al in contact with a Heusler compound.
    Type: Application
    Filed: October 13, 2021
    Publication date: April 13, 2023
    Inventors: MAHESH SAMANT, PANAGIOTIS CHARILAOS FILIPPOU, YARI FERRANTE, CHIRAG GARG, JAEWOO JEONG, . IKHTIAR
  • Patent number: 11557721
    Abstract: A device including a multi-layered structure that includes: a first layer that includes a first magnetic Heusler compound; a second layer that is non-magnetic at room temperature and includes both Ru and at least one other element E, wherein the composition of the second layer is represented by Ru1?xEx, with x being in the range from 0.45 to 0.55; and a third layer including a second magnetic Heusler compound. The multi-layered structure may overlay a substrate. The device may include a tunnel barrier overlying the multi-layered structure.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: January 17, 2023
    Assignees: International Business Machines Corporation
    Inventors: Panagiotis Charilaos Filippou, Chirag Garg, Yari Ferrante, Stuart S. P. Parkin, Jaewoo Jeong, Mahesh G. Samant
  • Patent number: 11538987
    Abstract: A device including a first magnetic layer, a templating structure and a second magnetic layer is described. The templating structure is on the first magnetic layer. The second magnetic layer is on the templating structure. The templating structure includes D and E. A ratio of D to E is represented by D1-xEx, with x being at least 0.4 and not more than 0.6. E includes a main constituent. The main constituent includes at least one of Al, Ga, and Ge. E includes at least fifty atomic percent of the main constituent. D includes at least one constituent that includes Ir. D includes at least 50 atomic percent of the at least one constituent. The templating structure is nonmagnetic at room temperature. At least one of the first magnetic layer and the second magnetic layer includes at least one of a Heusler compound and an L10 compound.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: December 27, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaewoo Jeong, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Stuart Stephen Papworth Parkin, Mahesh Samant
  • Publication number: 20220223783
    Abstract: A magnetic structure, a magnetic device incorporating the magnetic structure and a method for providing the magnetic structure are described. The magnetic structure includes a magnetic layer, a templating structure and a resistive insertion layer. The magnetic layer includes a Heusler compound and has a perpendicular magnetic anisotropy energy exceeding an out-of-plane demagnetization energy. The templating structure has a crystal structure configured to template at least one of the Heusler compound and the resistive insertion layer. The magnetic layer is on the templating structure. The resistive insertion layer is configured to reduce magnetic damping for the Heusler compound and allow for templating of the Heusler compound.
    Type: Application
    Filed: March 30, 2021
    Publication date: July 14, 2022
    Inventors: Jaewoo Jeong, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Mahesh Samant, Ikhtiar, Dmytro Apalkov
  • Publication number: 20220165938
    Abstract: A device including a first magnetic layer, a templating structure and a second magnetic layer is described. The templating structure is on the first magnetic layer. The second magnetic layer is on the templating structure. The templating structure includes D and E. A ratio of D to E is represented by D1-xEx, with x being at least 0.4 and not more than 0.6. E includes a main constituent. The main constituent includes at least one of Al, Ga, and Ge. E includes at least fifty atomic percent of the main constituent. D includes at least one constituent that includes Ir. D includes at least 50 atomic percent of the at least one constituent. The templating structure is nonmagnetic at room temperature. At least one of the first magnetic layer and the second magnetic layer includes at least one of a Heusler compound and an L10 compound.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 26, 2022
    Inventors: Jaewoo Jeong, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Stuart Stephen Papworth Parkin, Mahesh Samant
  • Publication number: 20220165469
    Abstract: A device including a templating structure and a magnetic layer on the templating structure is described. The templating structure includes D and E. A ratio of D to E is represented by D1-xEx, with x being at least 0.4 and not more than 0.6. E includes a main constituent. The main constituent includes at least one of Al, Ga, and Ge. Further, E includes at least fifty atomic percent of the main constituent. D includes at least one constituent that includes Ir, D includes at least 50 atomic percent of the at least one constituent. The templating structure is nonmagnetic at room temperature. The magnetic layer includes at least one of a Heusler compound and an L10 compound, the magnetic layer being in contact with the templating structure.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 26, 2022
    Inventors: Jaewoo Jeong, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Stuart Stephen Papworth Parkin, Mahesh Samant
  • Publication number: 20220165939
    Abstract: A device including a templating structure and a magnetic layer is described. The templating structure includes D and E. A ratio of D to E is represented by D1-xEx, with x being at least 0.4 and not more than 0.6. E includes a main constituent. The main constituent includes at least one of Al, Ga, and Ge. E includes at least fifty atomic percent of the main constituent. D includes at least one constituent that includes Ir. D includes at least 50 atomic percent of the at least one constituent. The magnetic layer is on the templating structure and includes at least one of a Heusler compound and an L10 compound. The magnetic layer is in contact with the templating structure and being magnetic at room temperature.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 26, 2022
    Inventors: Jaewoo Jeong, Panagiotis Charilaos Filippou, Yari Ferrante, Chirag Garg, Stuart Stephen Papworth Parkin, Mahesh Samant
  • Publication number: 20210175416
    Abstract: A method for providing a magnetic device and the magnetic device so provided are described. The magnetic device includes a magnetic layer having a surface. In some aspects, the magnetic layer is a free layer, a reference layer, or a top layer thereof. A tunneling barrier layer is deposited on the magnetic layer. At least a portion of the tunneling barrier layer adjacent to the magnetic layer is deposited at a deposition angle of at least thirty degrees from a normal to the surface of the magnetic layer. In some aspects, the deposition angle is at least fifty degrees.
    Type: Application
    Filed: April 3, 2020
    Publication date: June 10, 2021
    Inventors: Jaewoo Jeong, Mahesh G. Samant, Yari Ferrante, Panagiotis Charilaos Filippou, Chirag Garg, Stuart Stephen Papworth Parkin
  • Publication number: 20210167280
    Abstract: A device including a multi-layered structure that includes: a first layer that includes a first magnetic Heusler compound; a second layer that is non-magnetic at room temperature and includes both Ru and at least one other element E, wherein the composition of the second layer is represented by Ru1?xEx, with x being in the range from 0.45 to 0.55; and a third layer including a second magnetic Heusler compound. The multi-layered structure may overlay a substrate. The device may include a tunnel barrier overlying the multi-layered structure.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 3, 2021
    Inventors: Panagiotis Charilaos Filippou, Chirag Garg, Yari Ferrante, Stuart S.P. Parkin, Jaewoo Jeong, Mahesh G. Samant
  • Patent number: 10957848
    Abstract: Devices are described that include a multi-layered structure that comprises three layers. The first layer is a magnetic Heusler compound, the second layer (acting as a spacer layer) is non-magnetic at room temperature and comprises alternating layers of Ru and at least one other element E (preferably Al; or Ga or Al alloyed with Ga, Ge, Sn or combinations thereof), and the third layer is also a magnetic Heusler compound. The composition of the second layer is represented by Ru1?xEx, with x being in the range from 0.45 to 0.55. An MRAM element may be constructed by forming, in turn, a substrate, the multi-layered structure, a tunnel barrier, and an additional magnetic layer (whose magnetic moment is switchable).
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: March 23, 2021
    Assignees: International Business Machines Corporation
    Inventors: Panagiotis Charilaos Filippou, Chirag Garg, Yari Ferrante, Stuart S. P. Parkin, Jaewoo Jeong, Mahesh G. Samant
  • Patent number: 10916282
    Abstract: A three-terminal device is disclosed having a magnetic tunnel junction (MTJ) and a spin orbit torque (SOT) generating layer. The MTJ has a first magnetic layer, a tunnel barrier layer underlying the first magnetic layer, and a second magnetic layer underlying the tunnel barrier, wherein the SOT generating layer is directly underlying the second magnetic layer. The second magnetic layer has a shape that is non-symmetrical, such that an average magnetization of a remnant state associated with the second magnetic layer has an in-plane component that is orthogonal to a current direction in the SOT generating layer.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: February 9, 2021
    Assignee: International Business Machines Corporation
    Inventors: Timothy Phung, Chirag Garg
  • Publication number: 20200402558
    Abstract: A three-terminal device is disclosed having a magnetic tunnel junction (MTJ) and a spin orbit torque (SOT) generating layer. The MTJ has a first magnetic layer, a tunnel barrier layer underlying the first magnetic layer, and a second magnetic layer underlying the tunnel barrier, wherein the SOT generating layer is directly underlying the second magnetic layer. The second magnetic layer has a shape that is non-symmetrical, such that an average magnetization of a remnant state associated with the second magnetic layer has an in-plane component that is orthogonal to a current direction in the SOT generating layer.
    Type: Application
    Filed: June 20, 2019
    Publication date: December 24, 2020
    Inventors: TIMOTHY PHUNG, CHIRAG GARG