Results 71 to 80 of about 5,091 (223)

Nanosized Sodium-Doped Lanthanum Manganites: Role of the Synthetic Route on their Physical Properties

, 2003
In this paper we present the results of the synthesis and characterisation of nanocrystalline La1-xNaxMnO3+delta samples. Two synthetic routes were employed: polyacrylamide-based sol-gel and propellant synthesis.
Balcells L., Balcells L., Boix T., Causa M. T., Coey J. M. D., Douy A, Gupta A., Helman J. S., Herrero E., Horyn R., Hwang H. Y., Li R.-W., Li X.-H., Mahendiran R., Malavasi L., Malavasi L., Mathur N. D., Muori M., Nagata K., Ng-Lee Y., Oseroff S. B., Pechini M. P. U.S., Ritter C., Roy S., Sanchez R. D., Shannon R. D., Singanahally T. A., Spinolo G., Tonejc A. M., Töpfer J., van Roosmalen J. A. M.   +30 more
core   +1 more source

Modulating Oxygen Transfer via A‐Site Doping in LaFeO3 for Coke‐Resistant Chemical Looping Steam Methane Reforming

ChemSusChem, Volume 18, Issue 24, December 13, 2025.
Promoting oxygen mobility within the oxygen carrier is essential for suppressing coke deposition during chemical looping steam methane reforming. A‐site doped LaFeO3 with alkaline earth metals facilitates bulk‐to‐surface oxygen transport, thereby maximizing syngas and hydrogen productivity while inhibiting carbon accumulation.
Jeongin Ha, Hyeon Seok Kim, Hyunjung Kim, Yikyeom Kim, Surya Ayuati Ning Asih, Jae W. Lee   +5 more
wiley   +1 more source

Pechini synthesis and microstructure of nickel-doped copper chromites

Materials Research, 2005
Spinel-type solid solutions were synthesized by the Pechini method and calcined between 500 and 900 °C for 4 hours and at 900 °C for 8 hours to produce ceramic pigments.
Patrícia Mendonça Pimentel, Antonio Eduardo Martinelli, Dulce Maria de Araújo Melo, Anne Michelle Garrido Pedrosa, Jardel Dantas Cunha, Carlos Neco da Silva Júnior   +5 more
doaj   +1 more source

Environmental-friendly yellow pigment based on Tb and M (M = Ca or Ba) co-doped Y2O3 [PDF]

, 2013
A yellow inorganic ceramic pigment with general formula Y1.86−xMxTb0.14O3−x/2 (M = Ca and/or Zn) with x = 0.06, 0.32 and 0.64 were synthesized by a modified Pechini method. XRD, SEM and HRTEM/EDX analysis showed the formation of solid solution at 1300 °C
Beltrán Mir, Héctor, Cordoncillo, Eloisa, De la Luz, Verónica, Prades Tena, Marta   +3 more
core   +1 more source

Multimodal Luminescence from LaAlO3:Eu3+ via Trap Modulation for High‐Temperature Applications

Advanced Photonics Research, Volume 6, Issue 12, December 2025.
LaAlO3:Eu3+ (LAO:E) phosphor exhibiting multimode luminescence enabled by multilevel traps spanning shallow to deep states is reported. These traps ensure controlled charge storage and release at room and elevated temperatures. Experimental studies and theoretical calculations reveal the trapping–detrapping mechanism, highlighting LAO:E as a promising ...
Abdulelah Alolayan, Nimai Pathak, Kawsar Ali, Yuanbing Mao   +3 more
wiley   +1 more source

Temperature dependent tunability data and modelling in the paraelectric Ba0.7Sr0.3TiO3 solid solutions [PDF]

Processing and Application of Ceramics, 2009
The fi eld dependence of the dielectric constant (dc-tunability) as a function of temperature in (Ba,Sr)TiO3 ceramics was investigated. Dense and homogeneous BaxSr1-xTiO3 ceramics prepared by Pechini method show low losses, high dielectric constant of ...
Lavinia Petronela Curecheriu, Liliana Mitoseriu, Adelina Ianculescu   +2 more
doaj  

Effects of the atmosphere and substrate on the crystallization of PLZT thin films

Materials Research, 2000
Lead lanthanum zirconate titanate [PLZT (9/65/35)] thin films were prepared by dip-coating on Si (100) or Si/Ti/Pt (100) substrates using a polymeric precursor solution and annealed at 650 °C for 3 h. Perovskite phase formation of the PLZT thin films and
A.Z. Simões, A.H.M. Gonzalez, M.A. Zaghete, J.A. Varela, B.D. Stojanovic   +4 more
doaj   +1 more source

Evaluación de la actividad fotocatalítica de los compuestos A2La2Ti3O10 (A= K, Na, H) a diferentes cargas de cocatalizador [PDF]

, 2016
En este artículo se presenta la evaluación de los compuestos A2La2Ti3O10 (A= K, Na y H) frente a la degradación del azul de metileno cuando dichos compuestos se impregnan con NiO, las impregnaciones se efectúan con 0.01%, 0.05% ,0.1% y 0.2% de carga de ...
Díaz Ocampo, Gerardo Obdulio, Osorio Vélez, Jefferson   +1 more
core  

Effect of Fe content on atomic and electronic structure of complex oxides Sr Ti,Fe O3 delta [PDF]

, 2017
Two series of SrTi1 xFexO3 amp; 948; STFO powders with different Fe content produced by two different methods, solid state reaction or modified Pechini synthesis, have been investigated by soft X ray absorption spectroscopy. The O1s K , Fe2p L2,3
Baumann, S., Bouwmeester, H., Egorova, Y., Filatova, E., Galdina, K., Scherb, T., Schumacher, G.   +6 more
core   +2 more sources

Synthesis of (Bi,Pb)-2223 superconductor powder by pechini method

Revista Brasileira de Física Tecnológica Aplicada, 2018
In this paper, we present a detailed route of synthesis to produce ceramic superconductor Bi1,6Pb0,4Sr2Ca2Cu3Ox (Bi,Pb)-2223 powder by Pechini method. The obtained polymeric precursor solution was produced by using inexpensive chemical reagents, which showed a great stability for three weeks with high concentration of BPSCCO inorganic ions.
Guilherme Botega Torsoni, Cícero Cena, Gustavo Quereza de Freitas, C.C. Carvalho   +3 more
openaire   +2 more sources