Results 91 to 100 of about 11,181,629 (286)
Advanced Science, EarlyView.We demonstrate programmable structural symmetry and emission in benzylammonium‐based low‐dimensional hybrid perovskites. Continuous shaking transforms orthorhombic platelets into a lower‐symmetry monoclinic phase with broadband emission, whereas thermal activation drives the reverse pathways toward a higher‐symmetry configuration resembling the ...
Luiz G. Bonato +7 more
wiley +1 more source
Supercritical Fluid Synthesis of LiCoPO4 Nanoparticles and Their Application to Lithium Ion Battery
Inorganics, 2014 In this work, LiCoPO4 nanoparticles were synthesized by supercritical fluid method using cobalt nitrate hexahydrate (Co(NO3)2 6H2O) and cobalt acetate tetrahydrate (C4H6CoO4 4H2O) as starting materials.
Murukanahally Kempaiah Devaraju +4 more
doaj +1 more source
, 2011 Identification of the chemical state of Fe in barium hexaaluminate using Rietveld refinement and 57Fe Mouml;ssbauer ...
朱燕燕 +5 more
core
Advanced Science, EarlyView.Programmable chaotic suspension electrolysis bridges laboratory synthesis and industrial manufacturing of high‐performance MnO2 cathodes. This scalable strategy enables tunable oxygen vacancies and a robust γ/β tunnel framework, delivering superior electrochemical performance and thermal stability.
Zhihao Wu +16 more
wiley +1 more source
The validity of the Rietveld method
, 1983 The values of the estimated standard deviations given by the Rietveld profile refinement method are formally invalid, since the method does not take into account systematic errors which are introduced into the residuals by the constraints of the model ...
core +1 more source
Robust Photocatalytic Hydrogen Evolution Over a Conjugated Metal‐Organic Framework Heterojunction
Advanced Science, EarlyView.We report a conjugated coordination polymer, Cd‐TMT (TMT = 1,3,5‐trimercaptotriazine), featuring an intrinsic molecular‐level charge transport network. The conjugated TMT ligands facilitate strong intra‐ligand charge transfer, while their ordered π‐π stacking along the [111] direction establishes a continuous pathway for directional electron migration,
Chunzhe Wang +6 more
wiley +1 more source
Rietveld Refinement Analysis of Lampung Natural Zeolite Catalyst Impregnated Fe with Diffraction Method Using MAUD Software [PDF]
This research characterizes the space group and R-phase crystal structure using the XRD method and Rietveld refinement. Rietveld improvements using the Material Analysis Using Diffraction (MAUD) software are acceptable if the Rwp < 15% and Sig < 2 ...
Adhani, Lisa
core +1 more source
Synthesis and crystal structure analysis of the magnetic ternary compound Mn2GeTe4 [PDF]
Avances en Química, 2009 Samples of the ternary phase Mn2GeTe4 were synthesized by direct fusion using the anneal method. X-ray powder diffraction results indicated that this material crystallizes with orthorhombic symmetry, space group Pnma, and unit cell parameters: a = 13.950(
Miguel Quintero +5 more
doaj
Crystallographic changes in lead zirconate titanate due to neutron irradiation
AIP Advances, 2014 Piezoelectric and ferroelectric materials are useful as the active element in non-destructive monitoring devices for high-radiation areas. Here, crystallographic structural refinement (i.e., the Rietveld method) is used to quantify the type and extent of
Alexandra Henriques +7 more
doaj +1 more source
Characterization and densification of defect pyrochlore oxide powders ABi2Ta5O16 (A=Na, Tl)
Heliyon, 2019 Defect pyrochlore oxide powders ABi2Ta5O16, in the pseudo-binary systems BiTaO4–ATa3O8 (A = Na, Tl), were prepared by solid state method. The structural study showed that all oxides crystallize in a cubic system with the space group Fd3m, the lattice ...
O. Ait Sidi Ahmed +7 more
doaj +1 more source