Coercive field of a polycrystalline ferrimagnet with uni-axial anisotropy |
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Authors: | Randy S Fishman Fernando A Reboredo |
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Institution: | Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6065, USA |
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Abstract: | 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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Keywords: | Ferrimagnet Coercive Molecule-based magnet |
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