Micromagnetic Modeling

Objectives

Develop interactive computational tools for micromagnetics modeling, provide solutions to standard problems, and conduct benchmark verification.

Problems/Issues/Challenges Addressed

Different computational methods currently give different solutions to standard, elementary, micromagnetic domain structure problems. Today's fast workstations now make standardization of methods and solutions possible, and easily accessible to the community.

Expected Deliverables

A public domain, electronic archive of solutions to standard problems in micromagnetic materials.
A suite of public domain software tools for solving for domain structures in micromagnetic materials.

Likely Impacts/Consequences

Improved tools for design of high performance magnetic materials in such devices as magnetic recording heads and magnetic field sensors.

Accomplishments and Highlights

Initial release of public domain software for viewing magnetization patterns from mumag simulations. Includes rotation, zooming, sub-sampling and printing support.
Held two major workshops to choose problems and compare solutions (reports available).
Held two working group meetings to reformulate problems.
Formed a partnership with NIST's Information Technology Lab to develop tools.
Developed codes which calculate solutions for 2D arrays of 3D magnetization vectors.
Acquired codes from IBM to perform 3D finite element modeling

People

Nist Researchers:R.D. McMichael (MSEL), M. Donahue (ITL), J. Blue (ITL), D. Porter (ITL), L. Bennett (MSEL), J. Oti (EEEL)

Collaborators:S. Charap (CMU), J. Zhu (U Minn), E. Della Torre, F. Vajda (GWU)

Industry:T. Koehler (IBM), R. Victora (Kodak), B. Pant (Honeywell)

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