Micro-Raman scattering on superconducting HgBa2Can−1CunO2n+2+δ (n = 1, 2, 3) ceramics
| Autor: | H. Chang, Y. Q. Wang, Q. Xiong, R. L. Meng, Y.Y. Xue, C.W. Chu, Y.T. Ren, Y. Y. Sun |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Superconductivity
Materials science Scattering Analytical chemistry Energy Engineering and Power Technology chemistry.chemical_element Condensed Matter Physics Oxygen Electronic Optical and Magnetic Materials symbols.namesake chemistry visual_art symbols visual_art.visual_art_medium Cuprate Ceramic Electrical and Electronic Engineering Thin film Raman spectroscopy Raman scattering |
| Zdroj: | Physica C: Superconductivity. 217:273-279 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/0921-4534(93)90329-o |
| Popis: | We have measured the micro-Raman scattering on the mercury-based cuprate superconductors HgBa 2 CuO 4+δ (Hg-1201), HgBa 2 CaCu 2 O 6+δ (Hg-1212) and HgBa 2 Ca 2 Cu 3 O 8+δ (Hg-1223) in ceramic forms. The observed Raman spectra showed similar features for all the samples. A strong peak at ∼585 cm -1 was tentatively attributed to the apical oxygen vibrating along the c -direction. A shoulder peak at ∼570 cm -1 was speculated to be due to the vibration of the interstitial oxygen. Weak features around 180 cm -1 were observed for all the samples. The Raman spectrum from CaHgO 2 was also reported. The power dependence of the Raman peaks was studied on Hg-1212. Raman scattering on a Hg-1212 thin film was also measured. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|