Synthetic Control Over Magnetic Moment and Exchange Bias in All-Oxide Materials Encapsulated Within a Spherical Protein Cage

Journal Article · Mon Jan 01 00:00:00 EST 2007 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja0667561· OSTI ID:930313

Klem, M; Resnick, D; Gilmore, K; Young, M; Idzerda, Y; Douglas, T

This work focuses on the synthetic control of magnetic properties of mixed oxide magnetic nanoparticles of the general formula Fe{sub 3-x}Co{sub x}O{sub 4} (x {le} 0.33) in the protein cage ferritin. In this biomimetic approach, variations in the chemical synthesis result in the formation of single-phase Fe{sub 3-x}Co{sub x}O4 alloys or intimately mixed binary phase Fe/Co oxides, modifying the chemical structure and magnetic behavior of these particles, as characterized by static and dynamic magnetization measurements and X-ray absorption spectroscopy.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 930313
• Report Number(s): BNL-81023-2008-JA; JACSAT; TRN: US200822%%1465
• Journal Information: Journal of the American Chemical Society, Vol. 129; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
ABSORPTION SPECTROSCOPY
ALLOYS
CONTROL
DYNAMICS
FERRITIN
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIZATION
MATERIALS
OXIDES
PARTICLES
PROTEINS
SYNTHESIS
VARIATIONS
national synchrotron light source