Method for producing nanoheterostructured permanent magnet
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United States of America
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May 19, 2017
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May 19, 2017
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Abstract
A method for producing a nanoheterostructured permanent magnet includes a first step of preparing a raw material solution by dissolving, in a solvent, (1) a block copolymer comprising polymer block components that are immiscible but linked to each other, (2) a first inorganic precursor which is one of a hard magnetic material precursor and a soft magnetic material precursor, and (3) a second inorganic precursor which is the other of the hard magnetic material precursor and the soft magnetic material precursor, and a second step including a phase-separation treatment for forming a nanophase-separated, a conversion treatment for converting the hard magnetic material precursor and the soft magnetic material precursor to a hard magnetic material and a soft magnetic material, respectively, and a removal treatment for removing the block copolymer from the nanophase-separated structure.
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