Combustion synthesis of YBa2Cu3O7−x: glycine/metal nitrate method

Pederson, Larry R.; Maupin, Gary D.; Weber, William J.; McReady, D.J.; Stephens, R.W.B.

doi:10.1016/0167-577x(91)90235-x

Cited by 100 publications

(22 citation statements)

References 7 publications

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“…This stoichiometric nitrate-aspartic acid route was compared with the conventional nitrate-glycine route (usually called "glycine-nitrate process", GNP [1,2]). The same procedure was used, starting from the same mass of Al(NO3)3·9H2O, but in this case the stoichiometric reaction requires a glycine/Al molar ratio of 5/3.…”

Section: Synthesis Of Al2o3 Nanopowdersmentioning

confidence: 99%

“…Particularly, gel-combustion processes proved to be useful for the synthesis of nanomaterials with high specific surface areas and excellent compositional homogeneity by simple and low-cost procedures [1][2][3][4][5][6][7][8]. These methods are based on the gelling and subsequent combustion of an aqueous solution containing salts of the desired metals (nitrates are usually preferred) and an organic fuel, such as glycine, citric acid, etc.…”

Section: Introductionmentioning

confidence: 99%

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Nanostructured aluminium oxide powders obtained by aspartic acid–nitrate gel-combustion routes

Merino

Lascalea

Sánchez

et al. 2010

Journal of Alloys and Compounds

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Section: Synthesis Of Al2o3 Nanopowdersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanostructured aluminium oxide powders obtained by aspartic acid–nitrate gel-combustion routes

Merino

Lascalea

Sánchez

et al. 2010

Journal of Alloys and Compounds

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“…The nitrates were weighed according to the nominal composition of SFCO, and then dissolved into deionized water in a beaker. Citric acid (fuel) required for complete reaction with nitrates was calculated by assuming complete oxidation of the fuel according to the following reaction [16][17][18].…”

Section: Synthesis Of Sfco Powdermentioning

confidence: 99%

Synthesis of mixed-conducting oxide SrFeCo0.5O y powder by auto-combustion of citrate–nitrate gel

Chu

2007

J Electroceram

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Mixed-conducting oxide SrFeCo 0.5 O y powders have been synthesized by auto-combustion of citrate-nitrate gel. The resulting powder is pure, homogeneous and possesses a reasonably fine particle size. Attempts have been made to understand the combustion process with the help of Differential Thermal Analysis (DTA) of the sample. The XRD, SEM and TEM studies on these powders confirmed that the method produces powder had greater composition uniformity, lower residual carbonate levels and smaller particle sizes.

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“…A less than stoichiometric (fuel-lean) amount of glycine was added to the solution. Previous work has demonstrated that the amount of glycine added can affect the temperature and the extent of oxidation during autoignition [1,2]. The precursor solution was then stirred over low heat to attain the correct viscosity for spincasting and cooled to room temperature.…”

Section: Experimental Preparation Of Precursor Solutionsmentioning

confidence: 99%

“…An aqueous synthesis route has been developed previously to generate fine ceramic powders consisting of a homogenous mixture of metal oxides [1,2]. This process begins with the dissolution ol_metal nitrates and glycine in an aqueous solution.…”

Section: Introi)uctionmentioning

confidence: 99%

Laser-Induced Fluorescence in Doped Metal Oxide Planar Waveguides Deposited from Aqueous Solutions

Hess

1991

MRS Proc.

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An aqueous route to the deposition of complex metal oxide films is based upon the complexation of the corresponding metal nitrate salts by glycine, followed by spin-casting the concentrated solution onto silica substrates. The presence of glycine serves to frustrate precipitation and leads to the formation of a glassy matrix through which metal cations are homogeneously dispersed. Subsequent heating of coated substrates initiates an oxidation-reduction reaction which removes the organic matrix and residual nitrate leaving behind a film of the desired oxide composition. Using this method, ruby (Cr:Al2O3) and Sm:YAG (Sm:Y3Al5O12) films on the order of 150 nm thick have been deposited. The respective phases have been confirmed by XRD data and from the measured fluorescence spectra.The red fluorescence exhibited by these materials under 488 nm excitation is dependent upon the ambient temperature and pressure. A marked shift in wavelength is observed as a function of increasing pressure. Ruby also exhibits a temperature dependent wavelength shift in contrast to Sm:YAG where a negligible shift is seen to temperatures near 1200 K. Fluorescence lifetimes of both materials exhibit a temperature dependence which varies with dopant concentration. This work suggests the possible application of these films as pressure-temperature sensors in a planar waveguide configuration or as a coating material for optical fibers. Details of the deposition process will be reviewed and the fluorescence response of both types of films will be summarized.

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Combustion synthesis of YBa2Cu3O7−x: glycine/metal nitrate method

Cited by 100 publications

References 7 publications

Nanostructured aluminium oxide powders obtained by aspartic acid–nitrate gel-combustion routes

Nanostructured aluminium oxide powders obtained by aspartic acid–nitrate gel-combustion routes

Synthesis of mixed-conducting oxide SrFeCo0.5O y powder by auto-combustion of citrate–nitrate gel

Laser-Induced Fluorescence in Doped Metal Oxide Planar Waveguides Deposited from Aqueous Solutions

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