Magnetic field induced synthesis and self-assembly of super paramagnetic particles in a protein matrix.
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.
Sinha
Arvind
A
National Metallurgical Laboratory, Jamshedpur, India. arvind@nmlindia.org
Nayar
Suprabha
S
Nath
B K
BK
Das
Deepanker
D
Mukhopadhyay
P K
PK
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
D002712:Chlorides; D005290:Ferric Compounds; D005296:Ferrous Compounds; D005782:Gels; C000499:ferric oxide; D012710:Serum Albumin, Bovine; C029451:ferrous chloride; C024555:ferric chloride