Polymer-encapsulated magnetic nanoparticles

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United States of America Patent

PATENT NO 10319502
APP PUB NO 20180151278A1
SERIAL NO

15520581

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Abstract

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Magnetic particles (100) have a particle size (134) of 500 nm or less and include a core (110) and a polymer coating (120) that surrounds and encapsulates the core (110). The core (110) includes a metal, metal alloy, or metal oxide of at least one metal such as B, Mg, Al, Mn, Co, Ni, Cu, Fe Sm, Yb, Dy, Gd or Er and Nb. The magnetic core (100) is a polycrystalline particle and is a superspin glass magnetic material, having a coercivity greater than zero and a magnetic remenance greater than zero at room temperature. Above room temperature and at low field, the magnetic moment of these superspin glass magnetic materials increases with temperature. An in situ hydrolysis/precipitation method from precursor metal salts is used to form the polymer-encapsulated magnetic particles (100).

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Patent Owner(s)

Patent OwnerAddress
CORNING INCORPORATEDSP-TI-3-1 CORNING NY 14831

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ferrie, Ann MeeJin Painted Post, US 41 147
Jin, Yan Sunnyvale, US 63 269
Wang, Lingyan Horseheads, US 49 1163
Zhou, Yue Horseheads, US 126 839

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