Methods of making ferrite nanocrystals

US9376328B2 · kind B2 · utility

Assignee

• FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA · IT

Inventors

• Pablo Guardia Giros · Barcelona, ES
• Andreas Riedinger · Schwäbisch Gmünd, DE
• Simone Nitti · Bari, IT
• Teresa Pellegrino · Lecce, IT
• Liberato Manna · Palo del Colle, IT
• Roberto Cingolani · Genova, IT

Key dates

• Filing date: Apr 5, 2013
• Grant date: Jun 28, 2016
• Expiry date: Apr 5, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/64
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Methods of making iron-based ferrite nanocrystals are provided. In such methods the ferrite may include iron oxides and iron/cobalt or iron/manganese mixed salts. The method may include thermal decomposition of one or more precursors of the ferrite, consisting of an organic salt of the metal or metals constituting the ferrite of interest, comprising the operation of heating a solution comprising said precursor(s) in the presence of a surfactant and of a non-aqueous organic solvent comprising an ether, at temperature sufficient to cause thermal decomposition of said precursor, wherein the solvent may further comprise a saturated or unsaturated, linear or branched aliphatic hydrocarbon, liquid at temperatures above 45° C. and having a boiling point above the boiling point of the ethereal solvent.