no 9-for electrical investigation 20150603

1、For Electrical Investigation ofMaterialsunder Pressure and ShearYanzhang MaThe shearThe shearThe shearCrystal structure of Ga2S3: a) -phase; b) rhombohedral phase.The shear: compression onlyThe shear: compression onlyIn NeIn MEKOT=542,K=2.40.1KOT=586,K=3.30.4The shear: addition of shearThe shear: co

2、mpression and shearTable. Observed and calculated d-spacings rhombohedral phase of Ga2S3 and Ga2O3Rhombohedral Ga2O340.4GPaRhombohedral Ga2S329.1GPaRhombohedral Ga2S37.1GPad(obs)d(cal)a(hkl)d(obs)d(cal)b(hkl)d(obs)d(cal)c(hkl)3.48073.47980123.79603.81860123.06752.99001042.52862.52301042.87032.854210

3、42.88362.85001102.40202.40271102.62762.60251101.87501.81961222.16452.16680151.66531.66801221.65861.66562141.74011.73990241.53051.53032141.53391.5517303a= 4.085 (8)a= 5.20 (3)a= 5.69 (11)c= 17.69 (2) V= 253.8(8)3c= 14.4 (4) V= 338(8)3c= 14.8 (14) V= 418(31)3The shearn Reduction of transformation pres

4、sure 5 timesThe shear: for minerals under shearn Electrical measurementsClay MineralsAt14.9GPa,thehighdpeaksdisappeared, indicatingtheinterlayer Na-mont completelywaterinwasreleased.Allthepeaks abovedisappeared32.7GPaandthesample amorphous. crystalbecameThetoamporphousNa-mtransitionowanstnotreversib

5、le.Selected SAXS and WAXS patterns of Na-mont under pressures.MontmorilloniteNa-MontmorilloniteSerpentineSerpentineHydrousPeak height inversionNew defects vibrationZnFe2O4J. Xie et al. Chem. Mater. (2013)/ Q.Song et al. J. Am. Chem. Soc. (2012)/ T. E. Quickel et al. Nano lett. (2010)Formula: (M(1-X)

6、FeX)MXFe(2-X)O4M=Zn, Co, Ni, Mn, Cu, et al., x: A site occupiednumber of M2+ ionZnFe2O4Sudden resistance increasing ?ZnFe2O4gLiNbO3B12As210B12As2ThepressuredependenceofspacechargeSchematicdouble-Schottkybarriermodelatpotential.near grain boundary region. F is the space charge potential.There exists

7、a pressure-induced inversion of charge concentration in the space charge layer at 20.7 GPa of B12As2.Anodized TiO2nanotubes Before compression： Anatase, d (101) =0.351nm；d (211) =0.166nm start transform to baddeleyite: 10-14GPa Completion:23GPa baddeleyite structure stable to 31 GPa Quenched from 31

8、.3GPa: - PbO2, d (002) =0.274nmJ. Phys. Chem. C, Vol. 113, No. 15, 200923 Transform to- PbO2 phase TiO2 when quenches to 4.6-5.6GPaAnodized TiO2nanotubesTiO2 anataseTransition pressure(GPa)High pressure phasesBulk22.6-4.59PbO2 structureBaddeleyiteNanowires (200nm)1Nanowires (100nm)113 11-1610-1418Baddeleyite BaddeleyiteBaddeleyiteBaddeleyiteNanoparticles (2040nm)2Nanotubes (22nm wall)Nanoparticles (1020nm)2Nanoparticles (10nm)224