公开(公告)号：US20230352219A1

公开(公告)日：2023-11-02

申请号：US18348830

申请日：2023-07-07

Applicant: Regents of the University Of Minnesota

Inventor： Jian-Ping Wang ,  Shihai He ,  Yanfeng Jiang

IPC: H01F1/01 ,  H01F41/02 ,  B32B15/01 ,  C23C8/26 ,  C23C8/80 ,  C22C38/00 ,  C21D1/76 ,  H01F1/047 ,  B22D11/06 ,  H01F7/02

CPC classification number: H01F1/01 ,  B22D11/0622 ,  B22D11/0651 ,  B32B15/011 ,  C21D1/76 ,  C22C38/001 ,  C23C8/26 ,  C23C8/80 ,  H01F1/047 ,  H01F7/021 ,  H01F41/0253 ,  H01F41/0273

Abstract: A permanent magnet may include a Fe16N2 phase constitution. In some examples, the permanent magnet may be formed by a technique that includes straining an iron wire or sheet comprising at least one iron crystal in a direction substantially parallel to a crystal axis of the iron crystal; nitridizing the iron wire or sheet to form a nitridized iron wire or sheet; annealing the nitridized iron wire or sheet to form a Fe16N2 phase constitution in at least a portion of the nitridized iron wire or sheet; and pressing the nitridized iron wires and sheets to form bulk permanent magnet.

公开(公告)号：US20180100227A1

公开(公告)日：2018-04-12

申请号：US15840747

申请日：2017-12-13

Applicant: Regents of the University of Minnesota ,  UT-BATTELLE, LLC

Inventor： Michael P. Brady ,  Orlando Rios ,  Yanfeng Jiang ,  Gerard M. Ludtka ,  Craig A. Bridges ,  Jian-Ping Wang ,  Xiaowei Zhang ,  Lawrence F. Allard ,  Edgar Lara-Curzio

IPC: C23C8/26 ,  C21D6/00 ,  C21D1/26 ,  C22C38/00 ,  C23C28/00

CPC classification number: C23C8/26 ,  C01B21/0622 ,  C01P2002/72 ,  C01P2006/42 ,  C21D1/26 ,  C21D6/00 ,  C22C33/00 ,  C22C38/00 ,  C22C38/001 ,  C23C28/322 ,  C23C28/34 ,  H01F1/047 ,  H01F1/065

Abstract: A method may include annealing a material including iron and nitrogen in the presence of an applied magnetic field to form at least one Fe16N2 phase domain. The applied magnetic field may have a strength of at least about 0.2 Tesla (T).

公开(公告)号：US20170186518A1

公开(公告)日：2017-06-29

申请号：US15129439

申请日：2015-03-26

Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA ,  UT-BATTELLE, LLC ,  UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION

Inventor： Jian-Ping Wang ,  Yanfeng Jiang ,  Craig A. Bridges ,  Michael Brady ,  Orlando Rios ,  Roberta A. Meisner ,  Lawrence F. Allard ,  Edgar Lara-Curzio ,  Shihai He

IPC: H01F1/047 ,  H01F1/06 ,  C23C14/16 ,  C23C14/34 ,  C23C14/56 ,  C23C14/06 ,  H01F1/00 ,  C23C14/00

CPC classification number: H01F1/047 ,  B22F1/0018 ,  C22C38/001 ,  C22C38/002 ,  C22C2202/02 ,  C23C14/0036 ,  C23C14/0605 ,  C23C14/165 ,  C23C14/185 ,  C23C14/3414 ,  C23C14/3464 ,  C23C14/566 ,  C23C14/568 ,  C23C14/5806 ,  C23C14/586 ,  H01F1/0054 ,  H01F1/065 ,  H01F41/0253

Abstract: The disclosure describes techniques for forming nanoparticles including Fe16N2 phase. In some examples, the nanoparticles may be formed by first forming nanoparticles including iron, nitrogen, and at least one of carbon or boron. The carbon or boron may be incorporated into the nanoparticles such that the iron, nitrogen, and at least one of carbon or boron are mixed. Alternatively, the at least one of carbon or boron may be coated on a surface of a nanoparticle including iron and nitrogen. The nano particle including iron, nitrogen, and at least one of carbon or boron then may be annealed to form at least one phase domain including at least one of Fe16N2, Fe16(NB)2, Fe16(NC)2, or Fe16(NCB)2.

公开(公告)号：US11217371B2

公开(公告)日：2022-01-04

申请号：US16876675

申请日：2020-05-18

Applicant: Regents of the University of Minnesota

Inventor： Jian-Ping Wang ,  Yanfeng Jiang

IPC: H01F1/10 ,  H01F1/08 ,  C22C38/00 ,  H01F1/34 ,  B22F7/08 ,  C23C8/26 ,  C23C8/80 ,  C23C14/48 ,  C22C29/16 ,  B22D11/00 ,  B22D11/06 ,  H01F1/055 ,  H01F1/147 ,  H01F41/02 ,  H01F1/057

Abstract: A bulk permanent magnetic material may include between about 5 volume percent and about 40 volume percent Fe16N2 phase domains, a plurality of nonmagnetic atoms or molecules forming domain wall pinning sites, and a balance soft magnetic material, wherein at least some of the soft magnetic material is magnetically coupled to the Fe16N2 phase domains via exchange spring coupling. In some examples, a bulk permanent magnetic material may be formed by implanting N+ ions in an iron workpiece using ion implantation to form an iron nitride workpiece, pre-annealing the iron nitride workpiece to attach the iron nitride workpiece to a substrate, and post-annealing the iron nitride workpiece to form Fe16N2 phase domains within the iron nitride workpiece.

公开(公告)号：US10961615B2

公开(公告)日：2021-03-30

申请号：US15840747

申请日：2017-12-13

Applicant: Regents of the University of Minnesota ,  UT-BATTELLE, LLC

Inventor： Michael P. Brady ,  Orlando Rios ,  Yanfeng Jiang ,  Gerard M. Ludtka ,  Craig A. Bridges ,  Jian-Ping Wang ,  Xiaowei Zhang ,  Lawrence F. Allard ,  Edgar Lara-Curzio

IPC: C23C8/26 ,  C21D1/26 ,  C21D6/00 ,  C22C38/00 ,  C23C28/00 ,  C01B21/06 ,  C22C33/00 ,  H01F1/06 ,  H01F1/047

Abstract: A method may include annealing a material including iron and nitrogen in the presence of an applied magnetic field to form at least one Fe16N2 phase domain. The applied magnetic field may have a strength of at least about 0.2 Tesla (T).

公开(公告)号：US09994949B2

公开(公告)日：2018-06-12

申请号：US14754284

申请日：2015-06-29

Applicant: Regents of the University of Minnesota ,  UT-BATTELLE, LLC

Inventor： Michael P. Brady ,  Orlando Rios ,  Yanfeng Jiang ,  Gerard M. Ludtka ,  Craig A. Bridges ,  Jian-Ping Wang ,  Xiaowei Zhang ,  Lawrence F. Allard ,  Edgar Lara-Curzio

IPC: C21D1/26 ,  C22C33/00 ,  H01F1/047 ,  C23C8/26 ,  C21D6/00 ,  C23C28/00 ,  C01B21/06 ,  C22C38/00 ,  H01F1/06

CPC classification number: C23C8/26 ,  C01B21/0622 ,  C01P2002/72 ,  C01P2006/42 ,  C21D1/26 ,  C21D6/00 ,  C22C33/00 ,  C22C38/00 ,  C22C38/001 ,  C23C28/322 ,  C23C28/34 ,  H01F1/047 ,  H01F1/065

Abstract: A method may include annealing a material including iron and nitrogen in the presence of an applied magnetic field to form at least one Fe16N2 phase domain. The applied magnetic field may have a strength of at least about 0.2 Tesla (T).

公开(公告)号：US20170226635A1

公开(公告)日：2017-08-10

申请号：US15501670

申请日：2015-08-05

Applicant: Regents of the University of Minnesota

Inventor： Jian-Ping Wang ,  Yanfeng Jiang

IPC: C23C16/34 ,  C23C16/50 ,  C23C16/56

CPC classification number: C23C16/34 ,  C23C16/4488 ,  C23C16/50 ,  C23C16/56

Abstract: The disclosure describes hard magnetic materials including α″-Fe16N2 and techniques for forming hard magnetic materials including α″-Fe16N2 using chemical vapor deposition or liquid phase epitaxy.

公开(公告)号：US11742117B2

公开(公告)日：2023-08-29

申请号：US16003428

申请日：2018-06-08

Applicant: Regents of the University Of Minnesota

Inventor： Jian-Ping Wang ,  Shihai He ,  Yanfeng Jiang

IPC: H01F1/01 ,  B32B15/01 ,  C21D1/76 ,  C23C8/26 ,  C23C8/80 ,  C22C38/00 ,  H01F1/047 ,  B22D11/06 ,  H01F41/02 ,  H01F7/02

CPC classification number: H01F1/01 ,  B22D11/0622 ,  B22D11/0651 ,  B32B15/011 ,  C21D1/76 ,  C22C38/001 ,  C23C8/26 ,  C23C8/80 ,  H01F1/047 ,  H01F7/021 ,  H01F41/0253 ,  H01F41/0273

Abstract: A permanent magnet may include a Fe16N2 phase constitution. In some examples, the permanent magnet may be formed by a technique that includes straining an iron wire or sheet comprising at least one iron crystal in a direction substantially parallel to a crystal axis of the iron crystal; nitridizing the iron wire or sheet to form a nitridized iron wire or sheet; annealing the nitridized iron wire or sheet to form a Fe16N2 phase constitution in at least a portion of the nitridized iron wire or sheet; and pressing the nitridized iron wires and sheets to form bulk permanent magnet.

公开(公告)号：US11195644B2

公开(公告)日：2021-12-07

申请号：US15129439

申请日：2015-03-26

Applicant: Regents of the University of Minnesota ,  UT-BATTELLE, LLC ,  UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION

Inventor： Jian-Ping Wang ,  Yanfeng Jiang ,  Craig A. Bridges ,  Michael Brady ,  Orlando Rios ,  Roberta A. Meisner ,  Lawrence F. Allard ,  Edgar Lara-Curzio ,  Shihai He

IPC: H01F1/00 ,  H01F1/047 ,  H01F1/06 ,  C23C14/06 ,  C23C14/58 ,  C23C8/34 ,  B22F1/00 ,  C22C38/00 ,  C23C14/18 ,  H01F41/02 ,  C23C14/00 ,  C23C14/16 ,  C23C14/34 ,  C23C14/56

Abstract: The disclosure describes techniques for forming nanoparticles including Fe16N2 phase. In some examples, the nanoparticles may be formed by first forming nanoparticles including iron, nitrogen, and at least one of carbon or boron. The carbon or boron may be incorporated into the nanoparticles such that the iron, nitrogen, and at least one of carbon or boron are mixed. Alternatively, the at least one of carbon or boron may be coated on a surface of a nanoparticle including iron and nitrogen. The nano particle including iron, nitrogen, and at least one of carbon or boron then may be annealed to form at least one phase domain including at least one of Fe16N2, Fe16(NB)2, Fe16(NC)2, or Fe16(NCB)2.

公开(公告)号：US10794774B2

公开(公告)日：2020-10-06

申请号：US15828976

申请日：2017-12-01

Applicant: Regents of the University of Minnesota

Inventor： Jian-Ping Wang ,  Yanfeng Jiang

IPC: G01K7/00 ,  G01K1/00 ,  G01K7/36 ,  H01L43/10 ,  G01K7/16 ,  H01L43/08

Abstract: This disclosure describes various examples of spintronic temperature sensors. The example temperature sensors may be discrete or used to adaptively control operation of a component such as an integrated circuit (IC). In one example, an electronic device comprises a spintronic component configured such that the conductance of the spintronic component is based on sensed temperature. In one example, circuitry coupled to the spintronic component is configured to generate an electrical signal indicative of the sensed temperature based on the conductance of the spintronic component.