Investigation on phase and Raman spectra of Ba3(CaTa2-yTiy)O9-δ (y = 0 – 0.50) system
| Autor: | Shivendra Kumar Jaiswal |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Journal of Asian Ceramic Societies, Vol 8, Iss 3, Pp 572-577 (2020) |
| Druh dokumentu: | article |
| ISSN: | 2187-0764 21870764 |
| DOI: | 10.1080/21870764.2020.1786914 |
| Popis: | The perovskite-based oxides have widespread applications in sensors, dielectric resonators, gas separation membranes, and proton-conducting fuel cells. An attempt has been made here to characterize phase(s) and Raman spectra of Ba3(CaTa2-yTiy)O9-δ (y = 0 – 0.50) system. The X-ray diffraction patterns confirm the formation of trigonal phase (space group P$$\bar 3$$m1 or D33d, Z = 3) along with cubic structure (space group Pm$$\bar 3$$m or Oh1, Z = 1). Titanium substitution introduces disordering in the structure. Raman modes corresponding to A1g and Eg were clearly assigned. Bands at ~350, ~400, and ~800 cm−1 are associated with vibration of octahedron A1g(O), vibration of 2Eg(O), and stretching mode A1g(O), respectively. The creation of oxygen vacancies with titanium makes the compounds useful for industrial application. |
| Databáze: | Directory of Open Access Journals |
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