Field Dependence of Blocking Temperature in Magnetite Nanoparticles

Oxidation of Magnetite Nanoparticles

Temperature dependence of thermodiffusion in aqueous suspensions of charged nanoparticles.

Measurements of particle flows driven by temperature gradients are conducted as a function of temperature on aqueous suspensions of polystyrene nanoparticles and proteins of T4 lysozyme and mutant variants of T4 lysozyme. The thermodiffusion coefficients are measured using a microfluidic beam deflection technique on suspensions with particle concentrations on the order of 1 vol %. At T < or ~ 2...

Thermal treatment of magnetite nanoparticles

This paper presents the results of a thermal treatment process for magnetite nanoparticles in the temperature range of 50-500 °C. The tested magnetite nanoparticles were synthesized using three different methods that resulted in nanoparticles with different surface characteristics and crystallinity, which in turn, was reflected in their thermal durability. The particles were obtained by copreci...

Temperature dependence of gradational system in Pb0.7Sr0.3TiO3 nanoparticles

Temperature dependence of gradational system in Pb0.7Sr0.3TiO3 nanoparticles Fumihito SHIKANAI, Jun KANO, Shinya TSUKADA, Saidul ISLAM, Kihiro KATO, Akiko NAKAO, Takashi IDA and Seiji. KOJIMA Graduate School of Pure and Applied Science, Univ. of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan KEK-PF, Tsukuba, Ibaraki 305-0801, Japan Ceramics Research Laboratory, Nagoya Institute of Technology, Tajimi...

Temperature Dependence of Magnetically Active Charge Excitations in Magnetite across the Verwey Transition.

We study the electronic structure of bulk single crystals and epitaxial films of Fe_{3}O_{4}. Fe 2p core level spectra show clear differences between hard x-ray (HAX) and soft x-ray photoemission spectroscopy (PES). The bulk-sensitive spectra exhibit temperature (T) dependence across the Verwey transition, which is missing in the surface-sensitive spectra. By using an extended impurity Anderson...