Patents by Inventor Sumeet C. Pandey

Sumeet C. Pandey 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: 10930842
    Abstract: Some embodiments include a magnetic tunnel junction device having a first magnetic electrode, a second magnetic electrode, and a tunnel insulator material between the first and second magnetic electrodes. A tungsten-containing material is directly against one of the magnetic electrodes. In some embodiments the tungsten-containing material may be in a first crystalline lattice arrangement, and the directly adjacent magnetic electrode may be in a second crystalline lattice arrangement different from said first crystalline lattice arrangement. In some embodiments the tungsten-containing material, the first magnetic electrode, the tunnel insulator material and the second magnetic electrode all comprise a common crystalline lattice arrangement.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: February 23, 2021
    Assignee: Micron Technology, Inc.
    Inventor: Sumeet C. Pandey
  • Publication number: 20200350440
    Abstract: A transistor comprises a channel region between a source region and a drain region, a dielectric material adjacent to the channel region, an electrode adjacent to the dielectric material, and an electrolyte between the dielectric material and the electrode. Related semiconductor devices comprising at least one transistors, related electronic systems, and related methods are also disclosed.
    Type: Application
    Filed: May 2, 2019
    Publication date: November 5, 2020
    Inventors: Yunfei Gao, Kamal M. Karda, Stephen J. Kramer, Gurtej S. Sandhu, Sumeet C. Pandey, Haitao Liu
  • Patent number: 10680036
    Abstract: A magnetic cell includes magnetic, secondary oxide, and getter seed regions. During formation, a diffusive species is transferred from a precursor magnetic material to the getter seed region, due to a chemical affinity elicited by a getter species. The depletion of the magnetic material enables crystallization of the depleted magnetic material through crystal structure propagation from a neighboring crystalline material, without interference from the now-enriched getter seed region. This promotes high tunnel magnetoresistance and high magnetic anisotropy strength. Also during formation, another diffusive species is transferred from a precursor oxide material to the getter seed region, due to a chemical affinity elicited by another getter species. The depletion of the oxide material enables lower electrical resistance and low damping in the cell structure. Methods of fabrication and semiconductor devices are also disclosed.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: June 9, 2020
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Sumeet C. Pandey
  • Publication number: 20200119260
    Abstract: A magnetic cell includes a magnetic region formed from a precursor magnetic material comprising a diffusive species and at least one other species. An amorphous region is proximate to the magnetic region and is formed from a precursor trap material comprising at least one attractor species having at least one trap site and a chemical affinity for the diffusive species. The diffusive species is transferred from the precursor magnetic material to the precursor trap material where it bonds to the at least one attractor species at the trap sites. The species of the enriched trap material may intermix such that the enriched trap material becomes or stays amorphous. The depleted magnetic material may then be crystallized through propagation from a neighboring crystalline material without interference from the amorphous, enriched trap material. This enables high tunnel magnetoresistance and high magnetic anisotropy strength. Methods of fabrication and semiconductor devices are also disclosed.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 16, 2020
    Inventors: Gurtej S. Sandhu, Sumeet C. Pandey
  • Publication number: 20200066637
    Abstract: Some embodiments include an integrated assembly which has a semiconductor material with a surface. A first layer is over and directly against the surface. The first layer includes oxygen and a first metal. The relative amount of oxygen to the first metal is less than or equal to an amount sufficient to form stoichiometric metal oxide throughout the first layer. A second metal is over and directly against the first layer. A second layer is over and directly against the second metal. The second layer includes nitrogen and a third metal. Some embodiments include an integrated assembly which has a semiconductor material with a surface. A metal is adjacent the surface and is spaced from the surface by a distance of less than or equal to about 10 ?. There is no metal germanide or metal silicide between the metal and the surface.
    Type: Application
    Filed: August 24, 2018
    Publication date: February 27, 2020
    Applicant: Micron Technology, Inc.
    Inventors: Sumeet C. Pandey, Gurtej S. Sandhu
  • Patent number: 10505104
    Abstract: A magnetic cell includes a magnetic region formed from a precursor magnetic material comprising a diffusive species and at least one other species. An amorphous region is proximate to the magnetic region and is formed from a precursor trap material comprising at least one attractor species having at least one trap site and a chemical affinity for the diffusive species. The diffusive species is transferred from the precursor magnetic material to the precursor trap material where it bonds to the at least one attractor species at the trap sites. The species of the enriched trap material may intermix such that the enriched trap material becomes or stays amorphous. The depleted magnetic material may then be crystallized through propagation from a neighboring crystalline material without interference from the amorphous, enriched trap material. This enables high tunnel magnetoresistance and high magnetic anisotropy strength. Methods of fabrication and semiconductor devices are also disclosed.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: December 10, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Sumeet C. Pandey
  • Publication number: 20190319069
    Abstract: A magnetic cell includes magnetic, secondary oxide, and getter seed regions. During formation, a diffusive species is transferred from a precursor magnetic material to the getter seed region, due to a chemical affinity elicited by a getter species. The depletion of the magnetic material enables crystallization of the depleted magnetic material through crystal structure propagation from a neighboring crystalline material, without interference from the now-enriched getter seed region. This promotes high tunnel magnetoresistance and high magnetic anisotropy strength. Also during formation, another diffusive species is transferred from a precursor oxide material to the getter seed region, due to a chemical affinity elicited by another getter species. The depletion of the oxide material enables lower electrical resistance and low damping in the cell structure. Methods of fabrication and semiconductor devices are also disclosed.
    Type: Application
    Filed: June 25, 2019
    Publication date: October 17, 2019
    Inventors: Gurtej S. Sandhu, Sumeet C. Pandey
  • Publication number: 20190280192
    Abstract: Some embodiments include a magnetic tunnel junction device having a first magnetic electrode, a second magnetic electrode, and a tunnel insulator material between the first and second magnetic electrodes. A tungsten-containing material is directly against one of the magnetic electrodes. In some embodiments the tungsten-containing material may be in a first crystalline lattice arrangement, and the directly adjacent magnetic electrode may be in a second crystalline lattice arrangement different from said first crystalline lattice arrangement. In some embodiments the tungsten-containing material, the first magnetic electrode, the tunnel insulator material and the second magnetic electrode all comprise a common crystalline lattice arrangement.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 12, 2019
    Applicant: Micron Technology, Inc.
    Inventor: Sumeet C. Pandey
  • Patent number: 10355044
    Abstract: A magnetic cell includes magnetic, secondary oxide, and getter seed regions. During formation, a diffusive species is transferred from a precursor magnetic material to the getter seed region, due to a chemical affinity elicited by a getter species. The depletion of the magnetic material enables crystallization of the depleted magnetic material through crystal structure propagation from a neighboring crystalline material, without interference from the now-enriched getter seed region. This promotes high tunnel magnetoresistance and high magnetic anisotropy strength. Also during formation, another diffusive species is transferred from a precursor oxide material to the getter seed region, due to a chemical affinity elicited by another getter species. The depletion of the oxide material enables lower electrical resistance and low damping in the cell structure. Methods of fabrication and semiconductor devices are also disclosed.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: July 16, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Sumeet C. Pandey
  • Patent number: 10347689
    Abstract: A magnetic cell includes magnetic, secondary oxide, and getter seed regions. During formation, a diffusive species is transferred from a precursor magnetic material to the getter seed region, due to a chemical affinity elicited by a getter species. The depletion of the magnetic material enables crystallization of the depleted magnetic material through crystal structure propagation from a neighboring crystalline material, without interference from the now-enriched getter seed region. This promotes high tunnel magnetoresistance and high magnetic anisotropy strength. Also during formation, another diffusive species is transferred from a precursor oxide material to the getter seed region, due to a chemical affinity elicited by another getter species. The depletion of the oxide material enables lower electrical resistance and low damping in the cell structure. Methods of fabrication and semiconductor devices are also disclosed.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: July 9, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Sumeet C. Pandey
  • Publication number: 20190189627
    Abstract: A ferroelectric memory device includes a plurality of memory cells. Each of the memory cells comprises at least one electrode and a ferroelectric crystalline material disposed proximate the at least one electrode. The ferroelectric crystalline material is polarizable by an electric field capable of being generated by electrically charging the at least one electrode. The ferroelectric crystalline material comprises a polar and chiral crystal structure without inversion symmetry through an inversion center. The ferroelectric crystalline material does not consist essentially of an oxide of at least one of hafnium (Hf) and zirconium (Zr).
    Type: Application
    Filed: February 25, 2019
    Publication date: June 20, 2019
    Inventors: Sumeet C. Pandey, Lei Bi, Roy E. Meade, Qian Tao, Ashonita A. Chavan
  • Patent number: 10319903
    Abstract: Some embodiments include a magnetic tunnel junction device having a first magnetic electrode, a second magnetic electrode, and a tunnel insulator material between the first and second magnetic electrodes. A tungsten-containing material is directly against one of the magnetic electrodes. In some embodiments the tungsten-containing material may be in a first crystalline lattice arrangement, and the directly adjacent magnetic electrode may be in a second crystalline lattice arrangement different from said first crystalline lattice arrangement. In some embodiments the tungsten-containing material, the first magnetic electrode, the tunnel insulator material and the second magnetic electrode all comprise a common crystalline lattice arrangement.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: June 11, 2019
    Assignee: Micron Technology, Inc.
    Inventor: Sumeet C. Pandey
  • Patent number: 10242989
    Abstract: A ferroelectric memory device includes a plurality of memory cells. Each of the memory cells comprises at least one electrode and a ferroelectric crystalline material disposed proximate the at least one electrode. The ferroelectric crystalline material is polarizable by an electric field capable of being generated by electrically charging the at least one electrode. The ferroelectric crystalline material comprises a polar and chiral crystal structure without inversion symmetry through an inversion center. The ferroelectric crystalline material does not consist essentially of an oxide of at least one of hafnium (Hf) and zirconium (Zr).
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: March 26, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Sumeet C. Pandey, Lei Bi, Roy E. Meade, Qian Tao, Ashonita A. Chavan
  • Publication number: 20180277373
    Abstract: A method of forming a semiconductor device structure comprises forming at least one 2D material over a substrate. The at least one 2D material is treated with at least one laser beam having a frequency of electromagnetic radiation corresponding to a resonant frequency of crystalline defects within the at least one 2D material to selectively energize and remove the crystalline defects from the at least one 2D material. Additional methods of forming a semiconductor device structure, and related semiconductor device structures, semiconductor devices, and electronic systems are also described.
    Type: Application
    Filed: May 22, 2018
    Publication date: September 27, 2018
    Inventors: Roy E. Meade, Sumeet C. Pandey
  • Publication number: 20180226570
    Abstract: A magnetic cell includes a magnetic region formed from a precursor magnetic material comprising a diffusive species and at least one other species. An amorphous region is proximate to the magnetic region and is formed from a precursor trap material comprising at least one attracter species having at least one trap site and a chemical affinity for the diffusive species. The diffusive species is transferred from the precursor magnetic material to the precursor trap material where it bonds to the at least one attracter species at the trap sites. The species of the enriched trap material may intermix such that the enriched trap material becomes or stays amorphous. The depleted magnetic material may then be crystallized through propagation from a neighboring crystalline material without interference from the amorphous, enriched trap material. This enables high tunnel magnetoresistance and high magnetic anisotropy strength. Methods of fabrication and semiconductor devices are also disclosed.
    Type: Application
    Filed: March 29, 2018
    Publication date: August 9, 2018
    Inventors: Gurtej S. Sandhu, Sumeet C. Pandey
  • Patent number: 10026889
    Abstract: A magnetic cell includes a magnetic region formed from a precursor magnetic material comprising a diffusive species and at least one other species. An amorphous region is proximate to the magnetic region and is formed from a precursor trap material comprising at least one attracter species having at least one trap site and a chemical affinity for the diffusive species. The diffusive species is transferred from the precursor magnetic material to the precursor trap material where it bonds to the at least one attracter species at the trap sites. The species of the enriched trap material may intermix such that the enriched trap material becomes or stays amorphous. The depleted magnetic material may then be crystallized through propagation from a neighboring crystalline material without interference from the amorphous, enriched trap material. This enables high tunnel magnetoresistance and high magnetic anisotropy strength. Methods of fabrication and semiconductor devices are also disclosed.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: July 17, 2018
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Sumeet C. Pandey
  • Publication number: 20180197735
    Abstract: A silicon chalcogenate precursor comprising the chemical formula of Si(XR1)nR24-n, where X is sulfur, selenium, or tellurium, R1 is hydrogen, an alkyl group, a substituted alkyl group, an alkoxide group, a substituted alkoxide group, an amide group, a substituted amide group, an amine group, a substituted amine group, or a halogen group, each R2 is independently hydrogen, an alkyl group, a substituted alkyl group, an alkoxide group, a substituted alkoxide group, an amide group, a substituted amide group, an amine group, a substituted amine group, or a halogen group, and n is 1, 2, 3, or 4. Methods of forming the silicon chalcogenate precursor, methods of forming silicon nitride, and methods of forming a semiconductor structure are also disclosed.
    Type: Application
    Filed: March 6, 2018
    Publication date: July 12, 2018
    Inventors: Timothy A. Quick, Sumeet C. Pandey, Stefan Uhlenbrock
  • Patent number: 9991122
    Abstract: A method of forming a semiconductor device structure comprises forming at least one 2D material over a substrate. The at least one 2D material is treated with at least one laser beam having a frequency of electromagnetic radiation corresponding to a resonant frequency of crystalline defects within the at least one 2D material to selectively energize and remove the crystalline defects from the at least one 2D material. Additional methods of forming a semiconductor device structure, and related semiconductor device structures, semiconductor devices, and electronic systems are also described.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: June 5, 2018
    Assignee: Micron Technology, Inc.
    Inventors: Roy E. Meade, Sumeet C. Pandey
  • Publication number: 20180151798
    Abstract: Some embodiments include a magnetic tunnel junction device having a first magnetic electrode, a second magnetic electrode, and a tunnel insulator material between the first and second magnetic electrodes. A tungsten-containing material is directly against one of the magnetic electrodes. In some embodiments the tungsten-containing material may be in a first crystalline lattice arrangement, and the directly adjacent magnetic electrode may be in a second crystalline lattice arrangement different from said first crystalline lattice arrangement. In some embodiments the tungsten-containing material, the first magnetic electrode, the tunnel insulator material and the second magnetic electrode all comprise a common crystalline lattice arrangement.
    Type: Application
    Filed: November 29, 2016
    Publication date: May 31, 2018
    Inventor: Sumeet C. Pandey
  • Publication number: 20180144927
    Abstract: Methods of forming silicon nitride. Silicon nitride is formed on a substrate by atomic layer deposition at a temperature of less than or equal to about 275° C. The as-formed silicon nitride is exposed to a plasma. The silicon nitride may be formed as a portion of silicon nitride and at least one other portion of silicon nitride. The portion of silicon nitride and the at least one other portion of silicon nitride may be exposed to a plasma treatment. Methods of forming a semiconductor structure are also disclosed, as are semiconductor structures and silicon precursors.
    Type: Application
    Filed: December 29, 2017
    Publication date: May 24, 2018
    Inventors: Sumeet C. Pandey, Brenda D. Kraus, Stefan Uhlenbrock, John A. Smythe, Timothy A. Quick