| X-ray absorption fine structure studies of Hg1-xCdxTe and Hg1-xMnxTe bond lengths : Bond relaxation and structural stability of ternary alloys | |
|---|---|
| 學年 | 79 |
| 學期 | 1 |
| 出版（發表）日期 | 1990-12-01 |
| 作品名稱 | X-ray absorption fine structure studies of Hg1-xCdxTe and Hg1-xMnxTe bond lengths : Bond relaxation and structural stability of ternary alloys |
| 作品名稱（其他語言） | |
| 著者 | Mayanovic, R. A.; Pong, Way-faung; Bunker, B. A. |
| 單位 | 淡江大學物理學系 |
| 出版者 | College Park: American Physical Society |
| 著錄名稱、卷期、頁數 | Physical Review B (Condensed Matter) 42(17), pp.11174-11182 |
| 摘要 | Bond lengths in the narrow-band-gap semiconductor alloys Hg1-xCdxTe and Hg1-xMnxTe have been deduced using x-ray-absorption fine-structure techniques. The nearest-neighbor bond lengths, for both alloy systems, are found to be constant as a function of alloy composition within the experimental uncertainties of 0.01 Å. These results contradict the predictions of some recent theories for Hg1-xCdxTe alloys, finding the Hg-Te and Cd-Te bond lengths to be decreasing in spite of the lattice constant increasing with x. The bond relaxation in several III-V, II-VI, and II-VI-based diluted magnetic semiconductor (DMS) ternary alloys is found to be quantitatively proportional to the ratio of bond bending to bond-stretching force constants. Hg1-xCdxTe and DMS alloys, including Hg1-xMnxTe, are found to have the largest amount of bond relaxation. For DMS's, this is attributed to tetrahedral bond weakening resulting from hybridization of anion p and Mn 3d orbitals thereby decreasing the amount of charge available for the making of sp3 bonds. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0163-1829 1095-3795 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | 紙本 電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27765 ) |
GoogleAnalytics