In tetragonal zirconia, the cation is coordinated by two interpenetrating tetrahedra of oxygen ions, implying two di4erent cation+oxygen bond lengths. On substituting the di4erent tetravalent ions Ge, Ti, Sn, and Ce into tetragonal ZrO 2 +2 mol% Y 2 O 3 , the mean value of the shorter cation+anion b
Bond Valence Analysis of BaRuO3
β Scribed by A. Santoro; I. Natali Sora; Q. Huang
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 262 KB
- Volume
- 151
- Category
- Article
- ISSN
- 0022-4596
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The structure of TRuO 3 (T β«Ψβ¬ Ba 0.875 Sr 0.125 ) has been analyzed using the bond valence procedures developed by Brown [e.g., Acta Crystallogr. Sect. B 48, 553 (1992)] and O'Keeffe [Structure and Bonding 71, 161 (1989)]. The experimental results, which show ''overbonded'' and ''underbonded'' T an
The variational biorthogonal valence bond method is applied to the r-electrons of six 1,3-dipoles (CH,N,, HCNO, CH,NHO, N,O, 0,, NO,). The results are compared with those from other valence bond techniques, including a detailed comparison with the spin-coupled valence bond approach. For CH, N,, HCNO