169 resultados para Ce^3
Resumo:
60mm110mmCeLu1.6Y0.4SiO5LYSO,LSO,LYSO.LYSO,YLSO.Ce^34f^15d^1.Ce^3,Gaussian,395nm418nmCe1,435nmCe2
Resumo:
CeLuSi2O7(CeLPS)xC21m(110)CeLPSCeLPS302349nmCe^3+4f^15d^1Ce^3+Gaussian384407nm
Resumo:
266nmCe^3YAPCeYAPCe182nsCe^30106
Resumo:
ABLa(PO_4)_2900 LaPO_4RE~(3+)(RE = Ce,Tb,Dy)ABLa(PO_4)_2Ce~(3+)Tb~(3+)Rc(dd)ABLa(PO_4)_2Ce~(3+)Tb~(3+)Ce~(3+)Ce~(3+)Ce~(3+)Tb~(3+)LaPO_4Ce~(3+) Ce~(3+)Ce~(3+) Tb~(3+)Ce~(3+) Ce~(3+)ABLa(PO_4)_2:Ce,TbTb~(3+)ABLa(PO_4)_2Ce~(3+)Ce~(3+)-Tb~(3+)Ce~(3+)-Dy~(3+)ABLa(PO_4)_2:CeTbCe~(3+)Tb~(3+)B_2O_3Dy~(3+)SiO_2NH_4ClCe~(3+)Tb~(3+)0.20.50.080.2B_2O_3Dy~(3+)SiO_2NH_4Cl
Resumo:
In view of the growing interest in endohedral lanthanide fullerenes, Ce, as a typical +4 oxidation state lanthanide element, has been systematically studied. The synthesis, extraction and electronic structure of Ce@C-2n are investigated. Soot containing Ce@C-2n was synthesized in high yield by carbonizing CeO2-containing graphite rods and are back-burning the CeC2-enriched cathode deposit in a DC are plasma apparatus. Ce@C-2n, dominated by Ce@C-82, can be efficiently extracted from the insoluble part of the soot after toluene Soxhlet extraction by pyridine at high temperature and high pressure in a closed vessel. About 60% Ce@C-2n (2n = 82,80,78,76) and 35% Ce@C-82 can be enriched in the pyridine extract. This fact is identified by desorption electron impact mass spectrometry (DEI MS). The electronic structure of Ce@C-2n is analyzed by using X-ray photoemission spectroscopy (XPS) of pyridine-free film. It is suggested that the encapsulated Ce atom is in a charge state close to +3 and was effectively protected from reaction with water and oxygen by the enclosing fullerene cage. Unlike theoretical expectation, the electronic state of Ce@C-82 is formally described as Ce+3@C-82(3-). (C) 1997 Elsevier Science Ltd.
Resumo:
Eu-TbCe-Yb.Ce~(3+)Eu~(3+),.1 1.1 CaF_2,SrF_2,BaF_2,NH_4HF_2,EuF_3CeF_3Eu_2O_3(99.95%)CeO_2(99.99%).1.2 MF_2:Eu,Ce(MF_2:X%CeF_2,y%EuF_3;X=1,y=0,0.1,0.3,0.5,1;X=0,0.05,0.1,0.3,0.5,y=1),,(
Resumo:
,,,.,SumaokaCe~(3+)3,5-(cAMP),.3,5-3,5-(cGMP),.(HPLC)(NMR)cAMPcGMP,,,.
Resumo:
La_4(P_2O_7)_3;Ce,Gd,Tb.X,La_4(P_2O_7)_3Ce~(3+),Ce~(3+)Gd~(3+),,(La_(0.64)Ce_(0.3)Gd_(0.06)_4(P_2O_7)_3(La_(0.7)Ce_(0.3)_4(P_2O_7)3(La_(0.94)Gd_(0.06)_4(P_2O_7)_3.,Ce~(3+)Tb~(3+)~9,Tb~(3+).,Gd~(3+)Tb~(3+),(La_(0.80)Gd_(0.06)Tb_(0.14)_4(P_2O_7)_3(La_(0.86)Tb_(0.14)_4(P_2O_7)3.Ce,GdTb,Gd~(3+),Tb~(3+),
Resumo:
Ce~(3+)4f-5d,,Ce~(3+)5d-4f,5dCe~(3+),Ce~(3+)Tb~(3+),Ce~(3+)Tb~(3+),LaPO_4:Ce,Tb,Ce~(3+)Tb~(3+),
Resumo:
(Ce,Gd,Mn)MgB_5O_(10)X,LaMgB_5O_(10),P2_(1/c)EPR(Ce_(0.2)La_(0.2))MgB_5O_(10),(Gd_(0.7)La_(0.3))MgB_5O_(10),(Mn_(0.05)La_(0.95))MgB_5O_(10),(Ce_(0.2)Mn_(0.05)La_(0.75))MgB_5O_(10),(Gd_(0.95)Mn_(0.05))MgB_5O_(10)(Ce_(0.2)Gd_(0.8))MgB_5O_(10)(Ce_(0.2)Gd_(0.75)Mn_(0.05))MgB_5O_(15)(Ce_(0.2)Gd_(0.75)Mn_(0.05))MgB_5O_(10):Ce~(3+)Mn~(2+),Gd~(3+)Mn~(2+)Ce~(3+)Gd~(3+)Mn~(2+),Ce~(...
Resumo:
Ce:BaAlF_5X -BaAlF_5,,=5.146(?),b=7.191(?),c=19.647(?)Ce~(3+)290nm ,4f-5d 292nm ,306.5nm 324nm Ce~(3+)~2D ~2F_5/2~2F_7/2254nm , Ce_~(3+),351nm494nm , Ce~(3+)324nm ,
Resumo:
(Nd,Ce) :YAG Nd:YAG ,80%,,, YAG Ce~(3+) Nd~(3+)
Resumo:
(NH_4)_2HPO_4-Li_2CO_3-MoO_3(PbF_2) RPO_4(R=La~(3+),Ce~(3+),Tb~(3+)), CePO_4 TbPO_4
Resumo:
REEREEREE31000g/g;CeCe0.007REE1(pH8REEREECe^3+Ce^4+HCO3^-Ce2Ce^3+Ce^4+CeREEREEREE
