Structural instability in BaZrO3 crystals: Calculations and experiment

assessing political stability and instability in central asia and caucasus; case study, azerbaijan and kyrgyzstan

منطقه ی آسیای مرکزی وقفقاز به عنوان منطقه ای تاریخی و به دلیل دارا بودن ذخایر عظیم هیدرو کربنی از اهمیت ویژه ای برخوردار است. کشورهای این منطقه از عوامل عمده ی بی ثباتی نظیر عوامل جغرافیایی، اقتصادی، امنیتی، اجتماعی و سیاسی رنج می برند. پس از فروپاشی اتحاد جماهیر شوروی کشورهای منطقه از نعمت استقلال ناخواسته ای برخوردار شدند که مشکلات فوق را برای آن ها چندین برابر می کرد. در این روند برخی از این...

Growth of High Quality YBCO Single Crystals Using BaZrO3 Crucibles

High density BaZrO3 ceramic crucibles have been successfully fabricated and used to grow high quality YBa2Cu3O7-x single crystals by the BaO-CuO self flux method. The ceramic crucibles are inert and insoluble in the Y2O3-BaO-CuO melt, have a long lifetime, and can be used repeatedly for crystal growth runs. The crystals grown using the crucibles have not only high chemical purity (99.99-99.995%...

Harmonic and anharmonic calculations and experiment

The vibrational spectroscopy of SO4 2− · H2O n is studied by theoretical calculations for n=1–5, and the results are compared with experiments for n=3–5. The calculations use both ab initio MP2 and DFT/B3LYP potential energy surfaces. Both harmonic and anharmonic calculations are reported, the latter with the CC-VSCF method. The main findings are the following: 1 With one exception H2O bending ...

Pep-x Impedance and Instability Calculations∗

Close-coupling calculations versus experiment

Close-coupling calculations and experiment are combined in this work, which is aimed at establishing a set of state-to-state rate coefficients for elementary processes i j → m in O2:O2 collisions at low temperature involving the rotational states i, j, ,m of the vibrational ground state of O2( − g ). First, a set of cross sections for inelastic collisions is calculated as a function of the coll...