Barium transport properties

Seuter, A.M.J.H. (1974) Defect chemistry and electrical transport properties of barium titanate. Philips Research Reports, Supplement No. 3. 

Recently Bednorz and Muller (1) reported possible superconductivity at 30 K in the metallic-oxide La-Ba-Cu-0 system. Subsequent work by Tanaka and co-workers (2) showed that the high temperature superconductivity is due to the solid solution La BaxCuO. y which forms in the K2NiFA-type structure. Making solid solutions with strontium instead of barium, Cava et. al. (3). were able to show bulk superconductivity at 38 K in La2 xSrxCuOA y. While solid solutions of the type La2.xMxCuOA y (M = Sr, Ba) have been known for some time, (4-5) magnetic and electron transport properties of these compounds had not previously been measured at low temperatures (i.e. <120 K). ... 

Shi] Shin, H.S., Kwon, S.-J., A Suggestion on the Standard X-ray Powder Diffraction Pattern of Barium Ferrite , Powder Diffr., 7(4), 212-214 (1992) (Crys. Stracture, Experimental, 9) [1993Alc] Alcock, C.B., Thermodynamic and Transport Properties of Electroceramic Oxide Systems , J. Alloys Compd., 197,217-227 (1993) (Experimental, Phys. Prop., Review, Thermodyn., 28)... 

Barium is not very mobile in most soil systems. The rate of transportation of barium in soil is dependent on the characteristics of the soil material. Soil properties that influence the transportation of barium to groundwater are cation exchange capacity and calcium carbonate (CaCO) content. In soil with a high cation exchange capacity (e.g., fine textured mineral soils or soils with high organic... 

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