Crystallization of β, β″-Alumina Precursors Prepared from Metal Alkoxides

Electronic State and Photosensitivity of Metal Alkoxides Chemically Modified with β-Diketones

Antiferroelectric transition in β-alumina, a realization

2014 A model based on electric dipole-dipole interactions is proposed to explain the recently observed ordering transition in stoichiometric silver 03B2-alumina. The low temperature phase is a three-fold degenerate antiferroelectric array of dipoles associated with Ag+ and O-5 ions. When T ~ Tc with (T Tc)/Tc > 10-2, the correlation length 03BE increases in the D = 2 layers with a critical...

Nanostructured Gamma Alumina from Amorphous Precursors

Introduction Nanocrystalline gamma-phase (γ) alumina is among many polytypes of alumina that find extensive applications as a catalyst and catalytic supports. The most useful properties these aluminas provide as catalyst supports are high surface area and welldefined porosity. These properties result primarily from the nano-scale crystalline character of the alumina. The problem is that both th...

Rare earth β-diketonate and carboxylate metal complexes as precursors for MOCVD of oxide films

Volatile and thermostable complexs of lanthanide acetylacetonates and pivalates were obtained and investigated by different methods. These compounds were used for lanthanide oxide containing film producing and for fabrication of silica optical fibers doped by lanthanide oxide. The properties of these and already known volatile precursors are compared. It is well recognized that rare earth conta...

Metal Chelator Decreases Alzheimer β-Amyloid Plaques

five CQ-treated mice, and two showed no measurable Alzheimer ␤-Amyloid Plaques A␤ in the pellet fraction and no detectable A␤ pathology by immunocytochemistry. The authors then examined the effects of a higher dose (30 mg/kg/d) for 9 weeks in older 21-month-old mice (n ϭ 20) as compared to Transgenic mice developing ␤-amyloid (A␤) plaques sham-fed mice (n ϭ 19). This resulted in a 41% decrease ...