Coercive field of a polycrystalline ferrimagnet with uni-axial anisotropy

Randy S. Fishman; Fernando A. Reboredo

doi:10.1016/j.jmmm.2008.01.040

Coercive field of a polycrystalline ferrimagnet with uni-axial anisotropy

Randy S. Fishman, Fernando A. Reboredo

Materials Theory

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Unlike the coercive field H_c of a bulk ferrimagnet, which diverges at the compensation temperature T_comp, the coercive field of a polycrystalline ferrimagnet with uni-axial anisotropy is shown to have a minimum at T_comp. Despite this behavior, the field required for domain-wall motion still diverges at the compensation temperature. These ideas are used to treat a ferrimagnetic class of molecule-based magnets, the bimetallic oxalates, that exhibit a minimum coercivity at T_comp.

Original language	English
Pages (from-to)	1700-1704
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	320
Issue number	10
DOIs	https://doi.org/10.1016/j.jmmm.2008.01.040
State	Published - May 2008

Funding

We would like to thank Prof. Jim Thompson for helpful conversations. This research was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy under Contract no. DE-AC05-00OR22725.

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725
Oak Ridge National Laboratory

Keywords

Coercive
Ferrimagnet
Molecule-based magnet

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10.1016/j.jmmm.2008.01.040

Cite this

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AB - Unlike the coercive field Hc of a bulk ferrimagnet, which diverges at the compensation temperature Tcomp, the coercive field of a polycrystalline ferrimagnet with uni-axial anisotropy is shown to have a minimum at Tcomp. Despite this behavior, the field required for domain-wall motion still diverges at the compensation temperature. These ideas are used to treat a ferrimagnetic class of molecule-based magnets, the bimetallic oxalates, that exhibit a minimum coercivity at Tcomp.

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KW - Molecule-based magnet

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ER -

Coercive field of a polycrystalline ferrimagnet with uni-axial anisotropy

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Keywords

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