Phase Separation of ZnFe2O4-Fe3O4 Solid Solution During Low Temperature Oxidation in Air.

Solid Solution Formation during Liquid Phase Sintering

Temperature Gradients Induced Phase Separation in a Miscible Polymer Solution.

Jiro Kumaki,1 Takeji Hashimoto,1,2 and Steve Granick3 1Hashimoto Polymer Phasing Project, ERATO, JRDC, Keihanna Plaza, Seika, Kyoto 619-02, Japan 2Division of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 606-01, Japan 3Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801 (Received 27 February 1996) Phase separation occurre...

Temperature-dependent Dielectric Measurements of Polyacrylonitrile Fibers during Air Oxidation

Simple direct-current (DC) electrical conductivity measurements are widely used to measure the degree of carbon fiber processing during the latter stages of the carbonization, and during the graphitization, of polyacrylonitrile (PAN) fiber. Unfortunately, DC conductivity measurements are not possible for the oxidation stage and for the early stages of carbonization because the PAN conductivity ...

Low-field magnetic separation of monodisperse Fe3O4 nanocrystals.

Magnetic separations at very low magnetic field gradients (<100 tesla per meter) can now be applied to diverse problems, such as point-of-use water purification and the simultaneous separation of complex mixtures. High-surface area and monodisperse magnetite (Fe3O4) nanocrystals (NCs) were shown to respond to low fields in a size-dependent fashion. The particles apparently do not act independen...

Highly-oriented Fe2O3/ZnFe2O4 nanocolumnar heterojunction with improved charge separation for photoelectrochemical water oxidation.

This paper describes the design and synthesis of a heterojunction photoanode composed of highly-oriented Fe2O3/ZnFe2O4 nanocolumnar arrays with a well-defined morphology by reactive ballistic deposition and atomic layer deposition. This specific structure enhances the charge separation at the Fe2O3/ZnFe2O4 interface, leading to an improved photoelectrochemical performance for water oxidation.