Results 31 to 40 of about 5,086 (222)

Luminescence intensity ratio by three thermalized levels in YAG:Er3+/Yb3+ nanoparticles [PDF]

open access: yesHemijska Industrija
Luminescence thermometry is a remote temperature sensing method by observing temperature dependent spectral changes for temperature readout. Chase for increasing temperature readout sensitivity motivated research of employing 3rd thermalized level of Er3+
Ćirić Aleksandar   +4 more
doaj   +1 more source

Thermistor formation using BaTiO3 powders synthesised by the Pechini method

open access: yesIngeniería e Investigación, 2010
Barium titanate (BaTiO3) is a compound of interest in the field of electroceramics which is widely used in the manufacture of capacitors, piezoelectric transducers and resistive devices having a positive temperature coefficient (PTCR) and in manufacturing pyroelectric and optoelectronic devices.
Fernández Perdomo, Claudia P.   +1 more
openaire   +2 more sources

Lanthanum ferromanganites thin films by sol–gel process. Influence of the organic/inorganic R ratio on the microstructural properties [PDF]

open access: yes, 2005
Strontium-substituted lanthanum ferromanganites, La0.8Sr0.2Mn1−yFeyO3+δ (y=0, 0.2, 0.5, 0.8, 1), LSMF2Y (Y=10y) for solid oxide fuel cell (SOFC) cathode applications have been synthetized by a polymeric sol–gel route and deposited on YSZ substrates by a ...
Ansart, Florence   +4 more
core   +2 more sources

Synthesis, structural characterization and broadband ferromagnetic resonance in Li ferrite nanoparticles [PDF]

open access: yes, 2018
Producción CientíficaLithium ferrites are well known materials due to its numerous technological applications especially in microwave devices. Lithium ferrite nanoparticles were prepared by sol-gel technique by means of Pechini method, and then annealed ...
Almeida Valente, Manuel   +3 more
core   +1 more source

Modelling of the radiative properties of an opaque porous ceramic layer [PDF]

open access: yes, 2010
Solid Oxide Fuel Cells (SOFCs) operate at temperatures above 1,100 K where radiation effects can be significant. Therefore, an accurate thermal model of an SOFC requires the inclusion of the contribution of thermal radiation.
B Rousseau   +20 more
core   +3 more sources

A review on the designing of homogeneous multicomponent oxides via polymer complex method

open access: yesMaterials & Design
There have been a lot of interest in developing synthesis methods for the preparation of homogeneous multicomponent metal oxides for wide range of applications in the literature. One synthesis method of metal oxides was patented by Pechini in 1967, which
Masahiro Yoshimura   +2 more
doaj   +1 more source

Síntese e caracterização de nanopartículas de TiO2 Synthesis and characterization of TiO2 nanoparticles

open access: yesCerâmica, 2006
Vários métodos de síntese química têm sido desenvolvidos e utilizados na obtenção de pós para fabricação de membranas cerâmicas. Dentre os métodos alternativos utilizados em escala de laboratório, o método Pechini tem sido empregado com sucesso para a ...
A. C. F. M. Costa   +4 more
doaj   +1 more source

Auto-combustion synthesis of perovskite-type oxides SrTi1−xFexO3−δ [PDF]

open access: yes, 2015
A versatile one-pot auto-combustion method for the synthesis of powders of iron-doped strontium titanate, SrTi1−xFexO3−δ, has been developed. The synthesis is optimized by the combined use of EDTA and citric acid as chelating agents, and an appropriate ...
Bouwmeester, H.J.M.   +5 more
core   +2 more sources

Influência do tipo de solvente na síntese de mulita pelo método Pechini

open access: yesCerâmica
Resumo Mulita é um aluminossilicato com grande importância na tecnologia cerâmica. Sua síntese através de métodos químicos tem sido extensivamente estudada, no entanto, não se observam estudos da sua obtenção pelo método Pechini.
A. N. S. Braga   +4 more
doaj   +1 more source

Manifestation of vortex depinning transition in nonlinear current-voltage characteristics of polycrystalline superconductor Y_{1-x}Pr_{x}Ba_2Cu_3O_7 [PDF]

open access: yes, 2008
We present our recent results on the temperature dependence of current-voltage characteristics for polycrystalline Y_{1-x}Pr_{x}Ba_2Cu_3O_7 superconductors with x = 0.0, 0.1 and 0.3. The experimental results are found to be reasonably well fitted for all
Ammirata   +17 more
core   +2 more sources

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