Room temperature magnetic materials from nanostructured diblock copolymers

AL-Badri, Zoha M. and Maddikeri, Raghavendra R. and Zha, Yongping and Thaker, Hitesh D. and Dobriyal, Priyanka and Shunmugam, Raja and Russell, Thomas P. and Tew, Gregory N.. (2011) Room temperature magnetic materials from nanostructured diblock copolymers. Nature Communications, 2. p. 482. ISSN 2041-1723

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Nanostructured magnetic materials are important for many advanced applications. Consequently, new methods for their fabrication are critical. However, coupling self-assembly to the generation of magnetic materials in a simple, straight-forward manner has remained elusive. Although several approaches have been considered, most have multiple processing steps, thus diminishing their use of self-assembly to influence magnetic properties. Here we develop novel block copolymers that are preprogrammed with the necessary chemical information to microphase separate and deliver room temperature ferromagnetic properties following a simple heat treatment. The importance of the nanostructured confinement is demonstrated by comparison with the parent homopolymer, which provides only paramagnetic materials, even though it is chemically identical and has a higher loading of the magnetic precursor. In addition to the room temperature ferromagnetic properties originating from the block copolymer, the in situ generation densely functionalizes the surface of the magnetic elements, rendering them oxidatively stable.

Item Type: Article
Uncontrolled Keywords: Room temperature, magnetic materials, nanostructured diblock copolymers
InterNano Taxonomy: Nanoscale Objects and Nanostructured Materials > Nanocomposites > Magnetic
Nanoscale Objects and Nanostructured Materials > Nanostructured Materials > Block copolymers
Nanomanufacturing Processes > Self Assembly
Areas of Application > Medical and Pharmaceutical Industries
Areas of Application > Electronics and Semiconductor Industries
Collections: Nanomanufacturing Research Collection
Depositing User: Robert Stevens
Date Deposited: 06 Oct 2011 14:20
Last Modified: 06 Oct 2011 14:20

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