Dysprosium films

The cathodoluminescence of thin films containing rare-earth oxides was studied by Hansen and Myers (140). Films of yttrium oxide doped with rare earths were prepared in vacuum by electron-bombardment evaporation of the oxide powder mixtures. Luminescent rise and decay curves were obtained for activation with europium, gadolinium, terbium, and dysprosium. 

Sol-gel processes are also suitable for lanthanide oxide formation, as could be shown by the use of Tb(acac)3 and Dy(OBu- )3 in acetylacetone" . Tb203 crack- and pine-hole-free, dense and smooth microstructured buffer layers were produced on nickel tapes by a reel-to-reel continuous sol-gel process. The authors report that the film properties can be strongly influenced by solution components, temperature, time and atmosphere. Nanocrystalline mesoporous dysprosium oxide Dy203 with narrow monomodal pore size distribution can be approached by a combined sol-gel process with a surfactant-assisted templating technique . The spherical Dy203 nanoparticles were formed with aggregations. 

Cerny and Kovar (241) determined the heat of interaction with vacuum-evaporated films of dysprosium and yttrium at room temperature. These metals yielded high heats of adsorption of 960 and 1060 kj mol", respectively. It was suggested that the oxygen molecules undergo dissociative adsorption on the surface and penetrate into the subsurface, where they form strong bonds to the metal. 

Dilute thin films dysprosium or erbium-silver system... 

Sensitizers. The photoinduced discharge rate of a PVK film increases dramatically when the film is doped with a metallofullerene, dysprosium fulleride (D54I -82), or the fullerenes C-84 and C-60. A PVK film doped with DyC-82 displayed better pbotoconductivity than a film doped with C-84. This explains that DyC-82 is a better electron acceptor than C-84. However, the film doped with C-60 shows the best photoconductivity. ... 

In Chapters I and 2, an introduction is made to the synchrotron Mossbauer spectroscopy with examples. Examples include the/ns/tu Mossbauer spectroscopy with synchrotron radiation on thin films and the study of deep-earth minerals. Investigations of in-beam Mossbauer spectroscopy using a Mn beam at the RIKEN RIBF is presented in Chapter 3. This chapter demonstrates innovative experimental setup for online Mossbauer spectroscopy using the thermal neutron capture reaction, Fe (n, y) Fe. The Mossbauer spectroscopy of radionuclides is described in Chapters 4-7. Chapter 4 gives full description of the latest analysis results of lanthanides Eu and Gd) Mossbauer structure and powder X-ray diffraction (XRD) lattice parameter (oq) data of defect fluorite (DF) oxides with the new defect crystal chemistry (DCC) Oq model. Chapter 5 reviews the Np Mossbauer and magnetic study of neptunyl(+l) complexes, while Chapter 6 describes the Mossbauer spectroscopy of organic complexes of europium and dysprosium. Mossbauer spectroscopy is presented in Chapter 7. There are three chapters on spin-state switching/spin-crossover phenomena (Chapter 8-10). Examples in these chapters are mainly on iron compounds, such as iron(lll) porphyrins. The use of Mossbauer spectroscopy of physical properties of Sn(ll) is discussed in Chapter I I. 

If scandium iodide with additions of dysprosium and hohnium is added to the mercury vapor lamps used in studio lighting, it changes the character of the emitted light to make it more similar to sunlight, which is important for color TV filming. Each lamp only needs the addition of 5 mg scandium. 

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