(The relationship between microstructure and magnetic properties in high-energy permanent magnets characterized by polytwinned structures)

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This report summarizes the results of a study of the relationship between microstructure and magnetic properties in a unique genre of ferromagnetic material characterized by a polysynthetically twinned structure which arises during solid state transformation. These results stem from the work over a period of approximately 27 months of a nominal 3 year grant period. The report also contains a proposal to extend the research project for an additional 3 years. The polytwinned structures produce an inhomogeneous magnetic medium in which the easy axis of magnetization varies quasi-periodically giving rise to special domain configurations which are expected to markedly influence ... continued below

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Pages: (49 p)

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Creator: Unknown. January 1, 1992.

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Description

This report summarizes the results of a study of the relationship between microstructure and magnetic properties in a unique genre of ferromagnetic material characterized by a polysynthetically twinned structure which arises during solid state transformation. These results stem from the work over a period of approximately 27 months of a nominal 3 year grant period. The report also contains a proposal to extend the research project for an additional 3 years. The polytwinned structures produce an inhomogeneous magnetic medium in which the easy axis of magnetization varies quasi-periodically giving rise to special domain configurations which are expected to markedly influence the mechanism of magnetization reversal and hysteresis behavior of these materials in bulk or thin films. The extraordinary permanent magnet properties exhibited by the well-known Co-Pt alloys as well as the Fe-Pt and Fe-Pd systems near the equiatomic composition derive from the formation of a polytwinned microstructure.

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Pages: (49 p)

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OSTI; NTIS; GPO Dep.

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  • Other: DE92015198
  • Report No.: DOE/ER/45390-3
  • Grant Number: FG02-89ER45390
  • DOI: 10.2172/5133101 | External Link
  • Office of Scientific & Technical Information Report Number: 5133101
  • Archival Resource Key: ark:/67531/metadc1055669

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1992

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Jan. 29, 2018, 12:14 p.m.

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(The relationship between microstructure and magnetic properties in high-energy permanent magnets characterized by polytwinned structures), report, January 1, 1992; United States. (digital.library.unt.edu/ark:/67531/metadc1055669/: accessed August 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.