Methods for making radially anisotropic thin-film magnetic torroidal cores

Qiu, Jizheng; Sullivan, Charles R.

Title: Methods for making radially anisotropic thin-film magnetic torroidal cores

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Abstract

A method of forming a radially anisotropic toroidal magnetic core includes providing apparatus having a first magnet for providing a radial magnetic field extending across a cavity from an axial spindle to a surrounding second magnetic element, placing a substrate in the cavity, the substrate having a hole fitting around the head of the spindle; and sputter-depositing a film of ferromagnetic material onto the substrate. In an embodiment, the spindle is magnetically coupled to a first pole of the first magnet, the second magnetic element is coupled to a second pole of the first magnet, and a thermally conductive, nonmagnetic, insert separates the spindle and the second magnetic element.

Inventors:: Qiu, Jizheng; Sullivan, Charles R.

Issue Date:: 2017-05-23

Research Org.:: THE TRUSTEES OF DARTMOUTH COLLEGE, Hanover, NH (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1358237

Patent Number(s):: 9659706

Application Number:: 14/346,659

Assignee:: THE TRUSTEES OF DARTMOUTH COLLEGE

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H01F3/02 - made from sheets

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T29/49078 - Laminated

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
C23C16/4583 - {the substrate being supported substantially horizontally}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H01F7/0273 - {Magnetic circuits with PM for magnetic field generation}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T29/49076 - From comminuted material

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H01F41/18 - by cathode sputtering
H01F7/02 - Permanent magnets {[PM]}

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
C23C16/4584 - {the substrate being rotated}

G - PHYSICS G11 - INFORMATION STORAGE G11C - STATIC STORES
G11C19/0808 - {using magnetic domain propagation}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H01F41/02 - for manufacturing cores, coils, or magnets

G - PHYSICS G11 - INFORMATION STORAGE G11C - STATIC STORES
G11C19/08 - using thin films in plane structure {

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T29/49075 - including permanent magnet or core

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
C23C16/458 - characterised by the method used for supporting substrates in the reaction chamber

G - PHYSICS G11 - INFORMATION STORAGE G11C - STATIC STORES
G11C19/0816 - {using a rotating or alternating coplanar magnetic field}

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Resource Type:: Patent

Resource Relation:: Patent File Date: 2012 Sep 24

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Qiu, Jizheng, and Sullivan, Charles R. Methods for making radially anisotropic thin-film magnetic torroidal cores.  United States: N. p., 2017. 
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                    Qiu, Jizheng, & Sullivan, Charles R. Methods for making radially anisotropic thin-film magnetic torroidal cores.  United States.

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                    Qiu, Jizheng, and Sullivan, Charles R. Tue .  
        "Methods for making radially anisotropic thin-film magnetic torroidal cores".  United States.  https://www.osti.gov/servlets/purl/1358237.

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@article{osti_1358237,

  title        = {Methods for making radially anisotropic thin-film magnetic torroidal cores},

  author       = {Qiu, Jizheng and Sullivan, Charles R.},

  abstractNote = {A method of forming a radially anisotropic toroidal magnetic core includes providing apparatus having a first magnet for providing a radial magnetic field extending across a cavity from an axial spindle to a surrounding second magnetic element, placing a substrate in the cavity, the substrate having a hole fitting around the head of the spindle; and sputter-depositing a film of ferromagnetic material onto the substrate. In an embodiment, the spindle is magnetically coupled to a first pole of the first magnet, the second magnetic element is coupled to a second pole of the first magnet, and a thermally conductive, nonmagnetic, insert separates the spindle and the second magnetic element.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2017},

  month        = {5}

}

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