1.IntroductionThe chemistry of rare earthoxysulphides is well known [1-5] and theyhave extensive technological applications,but the d-transition metal oxysulphides wasnot known until recently [6-9].Therefore,itis nece...1.IntroductionThe chemistry of rare earthoxysulphides is well known [1-5] and theyhave extensive technological applications,but the d-transition metal oxysulphides wasnot known until recently [6-9].Therefore,itis necessary to study the thermodynamicproperties of these compounds.展开更多
The Gibbs standard free energies of formation of the fluorides and the oxyfluorides of Y. Gd. Dy, Tb,Ho. Er and Yb were measured by using either a calcium concentration cell with Caβ' / β+x-Al_2O_3 solidelectrol...The Gibbs standard free energies of formation of the fluorides and the oxyfluorides of Y. Gd. Dy, Tb,Ho. Er and Yb were measured by using either a calcium concentration cell with Caβ' / β+x-Al_2O_3 solidelectrolyte or an oxygen concentration cell with calcia stabilized zirconia (CSZ) solid electrolyte, accordingto which the phase stability diagram of RE-O-F systems were determined.展开更多
文摘1.IntroductionThe chemistry of rare earthoxysulphides is well known [1-5] and theyhave extensive technological applications,but the d-transition metal oxysulphides wasnot known until recently [6-9].Therefore,itis necessary to study the thermodynamicproperties of these compounds.
文摘The Gibbs standard free energies of formation of the fluorides and the oxyfluorides of Y. Gd. Dy, Tb,Ho. Er and Yb were measured by using either a calcium concentration cell with Caβ' / β+x-Al_2O_3 solidelectrolyte or an oxygen concentration cell with calcia stabilized zirconia (CSZ) solid electrolyte, accordingto which the phase stability diagram of RE-O-F systems were determined.
