<i>The Politics of Grand Strategy: Britain and France Prepare for War, 1904-1914</i>. Samuel R. Williamson

Ropp, Theodore

doi:10.1086/240608

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“…Wet techniques are strongly recommended for the preparation of YVO 4 powders. [18][19][20][21][22][23][24] In 1965, Arbit and Serebrennikov first suggested the preparation of YVO 4 in aqueous solution from yttrium nitrate and ammonium metavanadate. 19 Since then, YVO 4 products from different reactants under various conditions have been investigated by numerous researchers.…”

Section: Introductionmentioning

confidence: 99%

“…20 Ropp patented another method later that year, in which YVO 4 powders were precipitated from solution in the presence of H 2 O 2 and NH 4 OH. 21 Erdei and co-workers prepared YVO 4 particles with dimensions of about 100 nm from synthetic intermediates of Y 2 O 3 and V 2 O 5 by a so-called hydrolyzed colloid reaction (HCR) technique. 18,22,23 Recently, concentrated colloidal and well-dispersed YVO 4 nanoparticles were synthesized through precipitation.…”

Section: Introductionmentioning

confidence: 99%

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Size- and shape-tailored hydrothermal synthesis of YVO4 crystals in ultra-wide pH range conditions

et al. 2003

J. Mater. Chem.

105

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Yttrium orthovanadate (YVO 4 ) crystals have been prepared hydrothermally in both strongly acidic and basic media. The effects of vanadium source, acid, addition of sodium hydroxide, chelating reagent, and even solvent on the crystalline size and shape were explored using X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Models for the generation of YVO 4 crystals in both acidic and basic media are proposed from the experimental results. The influence of alkaline concentration on the sizes and shapes of YVO 4 crystals has been investigated, and it has been found that the addition of sodium hydroxide can reduce the crystal sizes of YVO 4 . Well-defined YVO 4 microcrystals with clear facets have been prepared, and dispersed YVO 4 nanograins and nanoflakes with dimensions of 5-50 nm have been obtained. Both the size and shape of YVO 4 crystals can be tailored by changing the reaction conditions even though YVO 4 crystals generally show a tetragonal growth habit due to its tetragonal crystallographic symmetry.

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