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The dynamics of ligand exchange processes on magnesium (II), scandium (III) and yttrium (III) ions /Pisaniello, Dino Luigi. January 1980 (has links) (PDF)
Thesis (Ph.D.) Dept. of Physical and Inorganic Chemistry, University of Adelaide, 1981. / Typescript (photocopy).
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Observations on the rare earths the ultra-violet are spectrum of yttrium,Yntema, Leonard Francis, Hopkins, B. S. January 1900 (has links)
Thesis (Ph. D.)--University of Illinois. / Vita. Caption title: Observations on the rare earths, XI: the arc spectrum of yttrium, by L.F. Yntema with B.S. Hopkins. "Reprinted from the Journal of the Optical Society and Review of Scientific Instruments, volume VI, number 2, March, 1922."
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Part I: Induced radioactivity in europiumFajans, Kasimir, Stewart, David Wylie, January 1900 (has links)
From D.W. Stewart's Thesis (Ph. D.)--University of Michigan, 1939. / "Reprinted from the Physical review, volume 56 ... October 1, 1939."
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Part I: Induced radioactivity in europiumFajans, Kasimir, Stewart, David Wylie, January 1900 (has links)
From D.W. Stewart's Thesis (Ph. D.)--University of Michigan, 1939. / "Reprinted from the Physical review, volume 56 ... October 1, 1939."
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New separations in the yttrium group by means of stearates and selenatesStoddart, Charles William. January 1909 (has links)
Thesis--Wisconsin. / eContent provider-neutral record in process. Description based on print version record.
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Ancillary ligand effects in organoyttrium chemistryDuchateau, Robbert. January 1995 (has links)
Proefschrift Rijksuniversiteit Groningen. / Met lit. opg. - Met een samenvatting in het Nederlands.
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Partículas magnéticas : ferrita de ítrio 'Y IND. 3''FE IND. 5''O IND. 12' (YIG) recoberta com sílica ('SIO IND. 2') /Godoi, Ricardo Henrique Moreton. January 2000 (has links)
Orientador: Miguel Jafelicci Junior / Banca: Sonia R. H. Mello Castanho / Banca: Daniel Rodrigues / Banca: Sidney José Lima Ribeiro / Banca: Celso Valentim Santilli / Resumo: Partículas magnéticas de ferrita de Ítrio (YIG) foram preparadas através da heterocoagulação da sílica sobre a ferrita de ítrio. A ferrita de ítrio foi obtida através do processo de nucleação homogênea, controlando a rota química a partir da hidrólise de cátions em meio ácido. A heterocoagulação foi induzida pela hidrólise do tetraetilortosilicato (TEOS) em diferentes meios de dispersão da ferrita de ítrio. Os produtos dispersos foram calcinados e caracterizados por magnometria de amostra vibrante, espectroscopia fotoeletrônica de raios X, microscopias eletrônicas de varredura e de transmissão, difração de elétrons, análise térmica diferencial, difratometria de raios X e mobilidade eletroforética. A camada de sílica que recobre a ferrita de ítrio foi identificada por microscopia eletrônica de transmissão. Difração de elétrons permitiu distinguir a fase policristalina da ferrita de ítrio e a sílica. A ausência dos picos de Fe e Y no espectro de XPS das partículas confirmam que o processo de heterocoagulação foi efetivo. Comparando as propriedades magnéticas da ferrita de ítrio e do sistema sílica/ferrita de ítrio infere-se que as propriedades de magnetização de saturação (Ms) e de campo coercivo (Hc) variaram em função da camada de sílica. / Abstract: Yttrium iron garnet (YIG) particles were coated with silica for control of their synthesis, improving the performance of system and stabilization of magnetic properties. Well-defined magnet particles were prepared by heterocoagulating silica on yttrium iron garnet. Yttrium iron garnet was obtained by homogeneous nucleation process, controlling the chemical routes from cation hydrolysis in acid medium. The heterocoagulation was induced by hydrolysis of tetraethylorthosilicate (TEOS) in appropriate yttrium iron garnet dispersion medium. Dispersed calcinated product was and characterized by vibrating sample magnetometry, X-ray photoemission spectroscopy, transmission and scanning electron microscopies, small area electron diffraction, differential thermal analysis, X-ray diffractometry and electrophoretic mobility. The pure systems YIG and Silica particles dispersions show appropriated physical-chemistry characteristics to be heterocoagulated. The shell of silica on YIG was identified by transmission electron microscopy and small area electron diffraction allowed to distinguish both silica and polycrystalline YIG phases. The absence of Fe and Y peaks on the particle surface XPS measurements confirmed that the heterocoagulation process was carried out by X-ray photoemission spectroscopy Comparing the magnetic measures of the YIG and silica on YIG samples, the magnetic properties of Ms were reduced and of Hc varied in function of the cover layer. / Doutor
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Double-photon decay in zirconium-90 and double internal bremsstrahlung in the beta decay of yttrium-90 and phosphorus-32 /Vanderleeden, Johannes Cornelis January 1966 (has links)
No description available.
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High resolution laser spectroscopy of yttrium and nickel monohalides /Leung, Wing-har, Joanne. January 2002 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 116-125).
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The implantation and annealing effects of yttrium implantation into aluminaHunt, Eden Meyer 12 1900 (has links)
No description available.
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