title: Magnetic field induced synthesis and self-assembly of super paramagnetic particles in a protein matrix.
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.
authors.affiliation: National Metallurgical Laboratory, Jamshedpur, India. arvind@nmlindia.org
authors.forename: Arvind
authors.initials: A
authors.lastname: Sinha
authors.forename: Suprabha
authors.initials: S
authors.lastname: Nayar
authors.forename: B K
authors.initials: BK
authors.lastname: Nath
authors.forename: Deepanker
authors.initials: D
authors.lastname: Das
authors.forename: P K
authors.initials: PK
authors.lastname: Mukhopadhyay
mesh_terms: D040761:Biomimetic Materials; D002712:Chlorides; D005290:Ferric Compounds; D005296:Ferrous Compounds; D005782:Gels / Q000737:chemistry*; D008280:Magnetics; D010316:Particle Size; D012710:Serum Albumin, Bovine / Q000737:chemistry*; D015204:Spectroscopy, Mossbauer
chemical_list: D002712:Chlorides; D005290:Ferric Compounds; D005296:Ferrous Compounds; D005782:Gels; C000499:ferric oxide; D012710:Serum Albumin, Bovine; C029451:ferrous chloride; C024555:ferric chloride