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Europium sulfide

Reaction between europium (III) oxide and hydrogen sulfide at 600° produces europium(III) sulfide predominately, but europium (II) sulfide is the product of reaction at higher temperatures.3 It has been found necessary to modify the previously published procedure3 in order to remove the last traces of elemental sulfur which otherwise contaminate the product. [Pg.79]

Europium (II) sulfide is a black powder possessing a sodium chloride lattice7 and an unknown melting point. Crystals of the sulfide have a golden hue by reflected light. The compound exhibits ferromagnetism8 with a Curie temperature of 17°K. Above this temperature, europium (II) sulfide behaves as a typical paramagnetic compound.2... [Pg.80]

Caesium selenide, 4265 Calcium polysulfide, 3942 Calcium sulfide, 3941 Cerium trisulfide, 3967 Chromium(II) sulfide, 4245 Cobalt(II) sulfide, 4218 Copper iron(II) sulfide, 4269 Copper(II) sulfide, 4285 Europium(II) sulfide, 4293... [Pg.257]

Ion-exchange reactions were used for the accumulation of europium(III) [158] and iron(III) [159] ions on the surface of GCE coated with Nafion , and chromium(VI) ions on the surface of GCE covered by a pyridine-functionalized sol-gel film [160], which were combined with the stripping SWV Furthermore, a cathodic stripping SWV was used for the determination of sulfide [161,162], thiols [163-166], selenium(lV) [167-170], halides [171-173] and arsenic [174] accumulated on the snrface of mercury electrode. [Pg.149]

Chondrite-normalized REE profiles (Fig. 1) for massive sulfides exhibit a prominent enrichment in LREE and Eu. The enrichment of LREE over the HREE is substantiated by strong positive REE correlations with La, Ce, Pr, Nd and Sm, and a (La/Lu)N ranging widely from 0.15 to 387. Europium anomalies are distinctly positive with (Eu/Eu )n averaging 4.7, but vary widely, ranging from 0.21 to 36. Minor negative Eu anomalies occur in semi-massive sulfides, due to dilution by volcaniclastic material. A positive... [Pg.178]

Bis(aciylonitrile)nickel(0), 2312 l,2-Bis(dichlorophosphino)ethane, 0797 Bis(trimethylsilyl) phosphonite, 2611 Bromodimethylborane, 0887 Calcium silicide, 3943 Cerimn trisulfide, 3967 Chromimn(II) acetate, 1493 Chromimn(II) oxide, 4241 Cobalt(III) nitride, 4214 Cobaltai) sulfide, 4218 Dicobalt boride, 0128 Dimethyl ethanephosphonite, 1732 Europium(II) sulfide, 4293 2-Fm-aldehyde, 1836 Indimn(II) oxide, 4641... [Pg.343]

In the 1990s a breakthrough was achieved in the development of long-lived afterglow phosphors. It was discovered that by co-doping rare earth aluminates, especially strontium, with europium and dysprosium gave phosphors with around ten times the afterglow of copper activated zinc sulfide and also with ten times the... [Pg.159]

Calcium or strontium sulfides, doubly activated with europium-samarium or cerium-samarium, can be stimulated by IR radiation since Sm3+ acts as a trap through the transition Sm3+ + e -> Sm2+ [5.341], Emission occurs at europium or cerium and leads to orange-red (SrS Eu2 +, Sm3+) or green (CaS Ce3 +, Sm3+) luminescence. [Pg.242]

Caesium selenide, 4259 Calcium polysulfide, 3936 Calcium sulfide, 3935 Cerium trisulfide, 3961 Chromium(II) sulfide, 4239 Cobalt(II) sulfide, 4212 Copper iron(II) sulfide, 4263 Copper(II) sulfide, 4279 Europium(II) sulfide, 4287 Germanium(II) sulfide, 4413 Gold(ni) sulfide, 0116... [Pg.2450]

Bis(acrylonitrile)nickel(0), 2305 l,2-Bis(dichlorophosphino)ethane, 0793 Bis(trimethylsilyl) phosphonite, 2607 Bromodimethylborane, 0883 Calcium silicide, 3937 Cerium trisulfide, 3961 Chromium(II) acetate, 1489 Chromium(II) oxide, 4235 Cobaltai) sulfide, 4212 Cobahfffl) nitride, 4208 Dicobalt boride, 0128 Dimethyl ethanephosphonite, 1726 Europium(II) sulfide, 4287 2-Furaldehyde, 1830 Indium(II) oxide, 4636... [Pg.2557]

Europium, isolation of materials containing samarium, ytterbium and, by means of sodium amalgam, 5 32, 33 phosphors containing strontium sulfide or selenide and, 3 21, 22... [Pg.235]

HfCli Hafnium chloride, 4 121 HgF Mercury (I) fluoride, 4 136 HgFs Mercury(II) fluoride, 4 136 HgS Mercury(II) sulfide, 1 19 Hg2Eu2 Europium amalgam, 2 68n. [Pg.212]

See other pages where Europium sulfide is mentioned: [Pg.462]    [Pg.2015]    [Pg.1961]    [Pg.2181]    [Pg.1997]    [Pg.1838]    [Pg.2136]    [Pg.2131]    [Pg.2210]    [Pg.1958]    [Pg.462]    [Pg.2015]    [Pg.1961]    [Pg.2181]    [Pg.1997]    [Pg.1838]    [Pg.2136]    [Pg.2131]    [Pg.2210]    [Pg.1958]    [Pg.767]    [Pg.32]    [Pg.1505]    [Pg.701]    [Pg.78]    [Pg.78]    [Pg.78]    [Pg.79]    [Pg.80]    [Pg.115]    [Pg.242]    [Pg.591]    [Pg.1277]    [Pg.1566]    [Pg.2093]    [Pg.1505]    [Pg.242]    [Pg.157]   
See also in sourсe #XX -- [ Pg.10 , Pg.77 ]

See also in sourсe #XX -- [ Pg.10 , Pg.77 ]

See also in sourсe #XX -- [ Pg.1155 ]



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Europium

Europium(II) Sulfide

Phosphors, infrared-sensitive strontium sulfide-samarium-europium

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