Recently,the ternary metallic compounds MM’X with hexagonal NiIn-type structure have attracted much attention due to their rich magnetic and structural *** resolution neutron diffraction was performed to study the cr...
Recently,the ternary metallic compounds MM’X with hexagonal NiIn-type structure have attracted much attention due to their rich magnetic and structural *** resolution neutron diffraction was performed to study the crystal and magnetic structures as functions of
In this work,the phase relationship of MgO-InO-PO ternary system have been systematically investigated via solid-state reactions,leading to discover a new ternary compound *** analysis based on powder x-ray diffractio...
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In this work,the phase relationship of MgO-InO-PO ternary system have been systematically investigated via solid-state reactions,leading to discover a new ternary compound *** analysis based on powder x-ray diffraction data is implemented to determine the crystal structure of this *** structure-,composition-,and temperature-dependent photoluminescent properties of lanthanide-doped MgInPO phosphors are investigated by means of structural analysis,photoluminescence excitation(PLE) and emission(PL)spectrum,decay lifetime,low-temperature and high-temperature luminescence,and chromaticity coordinate.
A serials of novel BaMg(PO):Eu and BaMgPO:Eu red-emitting phosphors were synthesized by solid-state reaction method,and their crystal structures were refined by the Rietveld method using powder X-ray diffraction(XRD) ...
A serials of novel BaMg(PO):Eu and BaMgPO:Eu red-emitting phosphors were synthesized by solid-state reaction method,and their crystal structures were refined by the Rietveld method using powder X-ray diffraction(XRD) ***(PO):Eu and BaMgPO:Eucrystallize in P2/n space group,with Eu and Baoccupy the same *** UV excitation at393 nm(F→L transition),both BaMg(PO):Eu and BaMgPO:Eu exhibit red emission with two main peaks at 592 nm and 613 nm,corresponding to the D→F and D→F transitions of Eu,*** excitation spectra monitored at 592 and 613 nm show a wide band peaked around 248 nm and several sharp lines,with domain peak centered at 393 *** former band is attributed to transition towards the charge-transfer state(CT) due to O-Eu *** prevailing peak at 613 nm in BaMg(PO):Eu corresponds to the hypersensitive *** indicates that Eu ion is located in an asymmetric cation environment in BaMg(PO):***,the intensity of the peak at 592 nm is much stronger in BaMg(PO) under the same excitation *** is obvious that Eu ions are expected to substitute for different sites in BaMg(PO) and BaMgPO *** of Euas far apart as BaMg(PO) and BaMgPOis interpreted based on the difference of crystal *** this work,a dopant site occupancy mechanism is proposed which could be taken as a general method to find new high color purity red phosphors.
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