Results 101 to 110 of about 6,144 (227)

Structure and magnetism of Cr2BP3O12: Towards the quantum-classical crossover in a spin-3/2 alternating chain

open access: yes, 2013
Magnetic properties of the spin-3/2 Heisenberg system Cr2BP3O12 are investigated by magnetic susceptibility chi(T) measurements, electron spin resonance, neutron diffraction, and density functional theory (DFT) calculations, as well as classical and ...
Chen, S.   +10 more
core   +1 more source

Obtenção de BaTiO3 livre de resíduos de carbonato de bário pelo método dos precursores poliméricos Obtention of carbonate-free BaTiO3 by the polymeric precursor method

open access: yesCerâmica, 2011
Um dos desafios na preparação de titanato de bário nanométrico é a completa reação dos precursores para a obtenção da fase tetragonal. O método dos precursores poliméricos se mostra bastante eficiente para este fim.
S. L. M. Brito, D. Gouvêa
doaj   +1 more source

Preparação de LiMn2O4 e LiCr0,2Mn1,8O4 em pó por processo Pechini modificado.

open access: yesSemina: Ciências Exatas e Tecnológicas, 2009
As fases LiMn2O4 e LiCr0,2Mn1,8O4 em pó foram preparadas por processo Pechini, modificado de maneira a diminuir o número de etapas e trabalhar com temperaturas inferiores ou iguais a 400oC.
Bernard Joseph Louis Gardes   +4 more
doaj   +1 more source

Uso de métodos químicos para obtener polvos cerámicos del sistema (Sn, Ti)O2

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2005
The (Sn,Ti)O2 system has a great interest due to its technological applications such as gas sensor and varistor. Although the thermodynamic properties and the kinetics of spinoidal decomposition in this system have been extensively studied, the general ...
Rodríguez-Páez, J E.   +2 more
doaj  

Modified Pechini Synthesis of Oxide Powders and Thin Films [PDF]

open access: yes, 2016
The modified Pechini method has become one of the most popular synthesis methods for complex oxide materials due to its simplicity and versatility. The method can be applied to synthesize nanocrystalline powders, bulk materials, as well as oxide thin films.
Sunde, Tor Olav Løveng   +2 more
openaire   +3 more sources

Preperation of hydroxyapatie-alumina coated zirconia composites [PDF]

open access: yes, 2007
Hydroxyapatite (HAp) bioceramics as bone substitute materials have unique biocompatibility feature among phosphate groups. How ever, the low fracture strength and poor fatigue resistance due to the instability of OH- groups limit the use of HAp for load ...
Kochupyloth, Pauljin
core  

Near room-temperature colossal magnetodielectricity and multiglass properties in partially-disordered La2NiMnO6

open access: yes, 2012
We report magnetic, dielectric and magnetodielectric responses of pure monoclinic bulk phase of partially-disordered La2NiMnO6, exhibiting a spectrum of unusual properties and establish that this system intrinsically is a true multiglass with a large ...
Choudhury, D.   +10 more
core   +1 more source

Preparation and characterization of dual layer lanthanum strontium cobalt ferrite/alumina hollow fibre membrane [PDF]

open access: yes, 2016
Ceramic membrane with unique morphology can be prepared using phase inversion and sintering technique. Dual layer lanthanum strontium cobalt ferrite (LSCF)/alumina hollow fibre membrane in this study was prepared using this technique.
Abdullah, Norfazliana
core  

Morphology and luminescence of nanocrystalline Nb2O5 doped with Eu3+ [PDF]

open access: yes, 2007
The synthesis of nanocrystalline Nb2O5:Eu3+ has been achieved by using a Pechini procedure. The obtained materials are single-phase niobia with the orthorhombic structure, average crystallite size around 25nm and average lattice strain of about 0.002 ...
Bettinelli, Marco   +6 more
core  

Obtención de nano-estructuras bi-dimensionales de SnO2 utilizando el método pechini: estudio de la conformación de la resina

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2008
Pechini method has been widely used in the synthesis of oxides, but the physicochemical process that happens during this one have not been discussed in detail, for example the resin conformation that is obtained in one of the stages of the process ...
Rodriguez Paez, J. E., Mosquera, A.
doaj  

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