Concave nanomagnets with widely tunable anisotropy

Lambson, Brian; Gu, Zheng; Carlton, David; Bokor, Jeffrey

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Title: Concave nanomagnets with widely tunable anisotropy

Abstract

A nanomagnet having widely tunable anisotropy is disclosed. The disclosed nanomagnet is a magnetic particle with a convex shape having a first magnetically easy axis. The convex shape is modified to include at least one concavity to urge a second magnetically easy axis to form substantially offset from the first magnetically easy axis. In at least one embodiment, the convex shape is also modified to include at least one concavity to urge a second magnetically easy axis to form with a magnetic strength substantially different from the first magnetically easy axis.

Inventors:: Lambson, Brian; Gu, Zheng; Carlton, David; Bokor, Jeffrey

Issue Date:: 2014-07-01

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1136416

Patent Number(s):: 8766754

Application Number:: 13/551,764

Assignee:: The Regents of the University of California (Oakland, CA)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS

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B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
B82Y25/00 - Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H01F1/0036 - {showing low dimensional magnetism, i.e. spin rearrangements due to a restriction of dimensions, e.g. showing giant magnetoresistivity,

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DOE Contract Number:: AC02-OSCIII1231

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Lambson, Brian, Gu, Zheng, Carlton, David, and Bokor, Jeffrey. Concave nanomagnets with widely tunable anisotropy.  United States: N. p., 2014. 
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                    Lambson, Brian, Gu, Zheng, Carlton, David, & Bokor, Jeffrey. Concave nanomagnets with widely tunable anisotropy.  United States.

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                    Lambson, Brian, Gu, Zheng, Carlton, David, and Bokor, Jeffrey. Tue .  
        "Concave nanomagnets with widely tunable anisotropy".  United States.  https://www.osti.gov/servlets/purl/1136416.

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@article{osti_1136416,

  title        = {Concave nanomagnets with widely tunable anisotropy},

  author       = {Lambson, Brian and Gu, Zheng and Carlton, David and Bokor, Jeffrey},

  abstractNote = {A nanomagnet having widely tunable anisotropy is disclosed. The disclosed nanomagnet is a magnetic particle with a convex shape having a first magnetically easy axis. The convex shape is modified to include at least one concavity to urge a second magnetically easy axis to form substantially offset from the first magnetically easy axis. In at least one embodiment, the convex shape is also modified to include at least one concavity to urge a second magnetically easy axis to form with a magnetic strength substantially different from the first magnetically easy axis.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2014},

  month        = {7}

}

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Similar Records

Title: Concave nanomagnets with widely tunable anisotropy

Abstract

Citation Formats

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Magnetic QCA systems journal, July 2005

Probing antiferromagnetic coupling between nanomagnets journal, February 2002

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Investigation of shape-dependent switching of coupled nanomagnets journal, September 2003

Majority Logic Gate for Magnetic Quantum-Dot Cellular Automata journal, January 2006

Thickness and temperature dependence of magnetic anisotropies in ultrathin fcc Co(001) structures journal, April 1993

Shape-induced biaxial anisotropy in thin magnectic films journal, September 1968

Bridging the gap between nanomagnetic devices and circuits conference, October 2008

Clocking structures and power analysis for nanomagnet-based logic devices conference, January 2007

Simulation of Highly Idealized, Atomic Scale Magnetic Quantum Cellular Automata Logic Circuits journal, March 2008

Physical constraints on magnetic quantum cellular automata journal, September 2003

A new technique for measuring magnetic anisotropies in thin and ultrathin films by magneto-optics journal, May 1997

Configurational Anisotropy in Nanomagnets journal, December 1998

Interplay between magnetocrystalline and configurational anisotropies in Fe(001) square nanostructures journal, August 2005

Property variation with shape in magnetic nanoelements journal, December 1999

Proposal for an all-spin logic device with built-in memory journal, February 2010

Magnetic Domain-Wall Racetrack Memory journal, April 2008

Control of micromagnetics in Permalloy nanomagnets by means of indentation journal, September 2003

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Simulation Studies of Nanomagnet-Based Logic Architecture journal, December 2008

Method and apparatus for providing a bioinformatics database
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Magnetic materials
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Magnetic logic element
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Magnetic logic elements
patent, March 2005

Magnetic cell and magnetic memory
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Magnetic cell and magnetic memory
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Self-aligning QCA based nanomaterials
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Magnetic memory device
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Thin membrane alignment method using patterned nanomagnets
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Spin-orbital quantum cellular automata logic devices and systems
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Magnetic recording medium and magnetic storage apparatus
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Magnetic recording medium and method for making same
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Magnetic device using magnetic domain dragging and method of operating the same
patent-application, August 2007

Clocking scheme for nanomagnet QCA
conference, August 2007

Switching Energy of Ferromagnetic Logic Bits
journal, July 2009

Magnetization reversal mechanisms in epitaxial Fe/Si(001) layers with twofold and fourfold magnetic anisotropies
journal, December 2001

Magnetic QCA systems
journal, July 2005

Probing antiferromagnetic coupling between nanomagnets
journal, February 2002

Room Temperature Magnetic Quantum Cellular Automata
journal, February 2000

Nanocomputing by field-coupled nanomagnets
journal, December 2002

Power dissipation in nanomagnetic logic devices
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Simulation of Power Gain and Dissipation in Field-Coupled Nanomagnets
journal, April 2005

Investigation of shape-dependent switching of coupled nanomagnets
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Majority Logic Gate for Magnetic Quantum-Dot Cellular Automata
journal, January 2006

Thickness and temperature dependence of magnetic anisotropies in ultrathin fcc Co(001) structures
journal, April 1993

Shape-induced biaxial anisotropy in thin magnectic films
journal, September 1968

Bridging the gap between nanomagnetic devices and circuits
conference, October 2008

Clocking structures and power analysis for nanomagnet-based logic devices
conference, January 2007

Simulation of Highly Idealized, Atomic Scale Magnetic Quantum Cellular Automata Logic Circuits
journal, March 2008

Physical constraints on magnetic quantum cellular automata
journal, September 2003

A new technique for measuring magnetic anisotropies in thin and ultrathin films by magneto-optics
journal, May 1997

Configurational Anisotropy in Nanomagnets
journal, December 1998

Interplay between magnetocrystalline and configurational anisotropies in Fe(001) square nanostructures
journal, August 2005

Property variation with shape in magnetic nanoelements
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Proposal for an all-spin logic device with built-in memory
journal, February 2010

Magnetic Domain-Wall Racetrack Memory
journal, April 2008

Control of micromagnetics in Permalloy nanomagnets by means of indentation
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journal, November 2011

Simulation Studies of Nanomagnet-Based Logic Architecture
journal, December 2008