Zobrazeno 1 - 10
of 20
pro vyhledávání: '"623"'
Publikováno v:
Journal of Solid State Chemistry. 115:55-65
The phase transition behavior of anhydrous silver sodalite (ASS) Ag3[Al 3 Si 3 O 12 ] differs from that of other compounds with a sodalite structure in that the transition detected T c = 678 K by differential scanning calorimetry does not involve the
Publikováno v:
Journal of Solid State Chemistry. 179:590-596
The synthesis of pure and Cr-doped nanosized LiMn 2 O 4 particles has been carried out by solid-state process on high-energy ground mixtures. In situ X-ray analysis demonstrates the spinel forms as single phase at 623 K passing through the Mn 3 O 4 p
Publikováno v:
Journal of Solid State Chemistry. 122:324-332
Hydroxycarbonate precursors with different Cu/Zn/Co/Al/Cr atomic ratios were prepared by coprecipitation of the metal nitrates with a stoichiometric amount of NaHCO3under controlled conditions of temperature, stirring, and pH. Cu–Zn–Co–Al–Cr
Publikováno v:
Journal of Solid State Chemistry. 121:372-378
Copper-zinc-cobalt-aluminium-containing crystalline hydroxycarbonates having hydrotalcite structure have been prepared by coprecipitation. X-ray powder diffraction (XRPD), magnetic susceptibility, and extended X-ray absorption fine structure (EXAFS)
Publikováno v:
Journal of Solid State Chemistry. 119:246-253
Hydroxycarbonate precursors with different Cu/Zn/Co/Cr atomic ratios and CuZnCoCr oxides obtained by thermal treatment of the precursors at different temperatures (623, 723, and 973 K in air) have been examined. Characterization has been per
Publikováno v:
Journal of Solid State Chemistry. 89:167-173
Samples of CuCo mixed oxide with Cu Co = 0.25 to 1.0 (atomic ratio) were prepared by coprecipitation with Na2CO3 and were characterized with TG, DSC, XRD, and XPS. Exothermic DSC peaks were observed at 588 and 808 K for Cu Co = 0.25 , and at 588,
Publikováno v:
Journal of Solid State Chemistry. 86:64-74
The crystal structure of the solid electrolyte Na2BeSiO4 has been determined and refined both at 295 and 623 K using crystal diffraction data from a sixfold twin collected with MoKα. The structural relations between the twin components have been elu
Publikováno v:
Journal of Solid State Chemistry. 270:92-97
Here, we report on a size-controlled synthesis of highly crystalline germanium particles, via the self-sustained reaction of GeO2 with Zn, Mg, and NaBH4. The thermodynamic analysis suggests that the GeO2 + 2Zn and GeO2 + NaBH4 systems are characteriz
Publikováno v:
Journal of Solid State Chemistry. 305:122696
Novel cermet Bi2Te2.1Se0.9+0.33 wt% Co composite has been prepared via spark plasma sintering (SPS) the starting Bi2Te2.1Se0.9 and Co powders at different SPS-temperatures (TS = 598, 623, 648 and 673 K). During the sintering, initial Co i
Publikováno v:
Journal of Solid State Chemistry. 303:122531
The facile synthesis of nanocrystalline lead tin tellurium selenium (PbSnTeSe) high entropy alloy (HEA) doped with Bi by mechanical alloying (MA) (5 hrs) and spark plasma sintering (SPS) (11 min) is reported. The first principle approach prediction a