氧化物性质表\SrO热膨胀系数

substance:strontiumoxide(SrO)26s03d04property:crystalstructure,latticeparameter,thermalexpansionForstructure,spacegroupetc.,seedocument26s00d1.Underpressure,theNaClstructuretransformsintotheCsClstructure.equationofstate(volume-pressurerelation)Fig.1.Seealso[86M,93Z,94S]forothercalculations.phasetransitionpressureandvolumechange(ptrinGPa)ptr35semiempiricalcalculation91Z∆V/V0.10ptr33.5…41.5effectivepotentialHFcalculation93Z∆V/V0.115…0.12893Zlatticeparameter(NaClstructure)(inÅ)a5.159semiempiricalcalculation91Z5.23…5.25effectivepotentialHFcalculation93Z5.10ab-initiopseudopotentialcalculation94Slatticeparameter(CsClstructure)a3.090Å(p=0)semiempiricalcalculation91Zvolumethermalexpansioncoefficientβ3.1·10–5K–1T=279...809Kmeanvalue,X-rayscattering,73Lpolycrystallinearthermalexpansioncoefficientα13.72·10–6K–1T=293...593Kmeanvalue,X-rayscattering(valuesup57Bto1500K,seeibid.)Seealsothecompilationofexperimentaldatapreviousto1977in[77T].AtetragonaldistortionoftheSrOlatticeatpressuresbetween70and307kbar(T=296K)withoutavolumediscontinuityisreportedin[73L].References:57BBeals,R.J.,Cook,R.L.:J.Am.Ceram.Soc.40(1957)279.73LLiu,L.-G.,Bassett,W.A.:J.Geophys.Res.78(1973)8470.77TTouloukian,Y.S.,Kirby,R.K.,Taylor,R.E.,Lee,T.Y.R.:ThermophysicalPropertiesofMatterVol.13:ThermalExpansion,NewYork,Washington:IFI/Plenum,1977.81S1Sangster,M.L.J.,Stoneham,A.M.:Philos.Mag.B43(1981)597.81S2Sato,Y.,Jeanloz,R.:J.Geophys.Res.86(1981)11773.86MMehl,M.J.,Hemley,R.J.,Boyer,L.L.:Phys.Rev.B33(1986)8685.91ZZhang,H.,Bukowinski,M.S.T.:Phys.RevB44(1991)2495.93ZZupan,A.,Petek,I.,Causà,M.,Dovesi,R.:Phys.Rev.B48(1993)799.94SSchütt,O.,Pavone,P.,Windl,W.,Karch,K.,Strauch,D.:Phys.Rev.B50(1994)3746.Fig.1.SrO.Equationofstateat300K.Experimentaldatapoints(opensymbols[73L]andfullsymbols[81S1])andtheoreticallines(B1(NaCl)phase(solidline),B2(CsCl)phase(dashedline))[91Z].VolumeVinÅ3/formulaunit.