NMR studies of phosphorus in Si-P-Te and Ge-P-Te glasses

Witschas M; Regelsky G; Eckert H

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NMR studies of phosphorus in Si-P-Te and Ge-P-Te glasses

机译：Si-P-Te和Ge-P-Te玻璃中磷的NMR研究

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Glass formation and structure in the systems P-Ge-Te and P-Si-Te has been studied by nuclear magnetic resonance (NMR) including P-31 magic-angle spinning, spin echo decay spectroscopy, and in situ molten-state investigations. Despite similar regions of glass formation, NMR results illustrate dramatic structural differences between the two systems. In P-Ge-Te glasses homopolar P-P bonding appears to be predominant, while the P-Si-Te glass system shows a much greater tendency towards heteropolar bonding, qualitatively consistent with a randomized chemical bonding. Constraints posed by these NMR experiments upon possible models of glass structure are discussed. (C) 1997 Elsevier Science B.V.

机译：P-Ge-Te和P-Si-Te系统中的玻璃形成和结构已通过核磁共振（NMR）进行了研究，包括P-31幻角旋转，自旋回波衰减光谱和原位熔融态研究。尽管玻璃形成区域相似，但NMR结果表明这两个系统之间存在显着的结构差异。在P-Ge-Te玻璃中，同极性P-P键似乎占主导地位，而P-Si-Te玻璃系统则显示出更大的异极性键合趋势，在质量上与随机化学键相一致。讨论了这些NMR实验对玻璃结构可能模型的约束。（C）1997年Elsevier Science B.V.

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《Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites》 |1997年第3期|共10页
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Witschas M; Regelsky G; Eckert H;
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正文语种 eng
中图分类晶体学;
关键词
P-31 SPIN-ECHO; MAS-NMR; SELENIUM; SULFUR; TELLURIUM;

机译：P-31自旋回波;MAS-NMR;硒;硫;碲;

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NMR studies of phosphorus in Si-P-Te and Ge-P-Te glasses

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