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Published on: August 22, 2014
Magnetic field induced synthesis and self-assembly of super paramagnetic particles in a protein matrix
Arvind Sinha1, Suprabha Nayar, B K Nath
1National Metallurgical Laboratory, Jamshedpur, India. arvind@nmlindia.org
Abstract:
Aqueous solution of a globular protein named bovine serum albumin was homogeneously mixed with ferrous and ferric ions and allowed to gel at ambient conditions. Gels were then oxidized using sodium hydroxide, in the presence of magnetic field of magnitude 0.13 T. The effect of magnetic field on the above biomimetic synthesis was a reduction in particle size and a directional assembly of synthesized super paramagnetic particles into a regular pattern in the protein film. The microstructural revelation was complimentary to Mossbauer results and magnetic measurement studies, i.e., an interesting variation in the magnetic behaviour of self-assembled super paramagnetic particles as a function of dc magnetic field induced ordering.
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