Synthesis and impedance studies of CuTa2-2xO6-5x perovskites
Polycrystalline samples of CuTa2-2xO6-5x are successfully synthesised by solid state reaction at 975 °C over 24 hours and the solid solution limit is confirmed as 0 1 ≤ x ≤ 0 2. The samples are fully indexed based on cubic structure in the space group, Pmmm, International Centre for Diffraction data...
| Päätekijät: | , , , , |
|---|---|
| Aineistotyyppi: | Artikkeli |
| Kieli: | English |
| Julkaistu: |
American Scientific Publishers
2013
|
| Linkit: | http://psasir.upm.edu.my/id/eprint/30178/1/Synthesis%20and%20impedance%20studies%20of%20CuTa2.pdf |
| _version_ | 1825947655718567936 |
|---|---|
| author | Chon, Mun Ping Tan, Kar Ban Khaw, Chwin Chieh Zainal, Zulkarnain Yap, Taufiq Yun Hin |
| author_facet | Chon, Mun Ping Tan, Kar Ban Khaw, Chwin Chieh Zainal, Zulkarnain Yap, Taufiq Yun Hin |
| author_sort | Chon, Mun Ping |
| collection | UPM |
| description | Polycrystalline samples of CuTa2-2xO6-5x are successfully synthesised by solid state reaction at 975 °C over 24 hours and the solid solution limit is confirmed as 0 1 ≤ x ≤ 0 2. The samples are fully indexed based on cubic structure in the space group, Pmmm, International Centre for Diffraction data (ICDD) number 70-611. The refined lattice parameters for CuTa1.8O5.5 (x = 0 1) and CuTa1.6O5 (x = 0 2) are a = 7 5117 (4) and 7.5070 (16), respectively. The determined grain sizes for both samples are in the range of 0.5-3.0 μm for x = 0 1 and 1.0-4.0 μm for x = 0 2. Besides, the samples show no thermal change in a wide range of temperature studied. Meanwhile, high relative permittivity exhibited by sample x = 0 2 at room temperature is also accompanied with high dielectric loss. The recorded activation energies, Ea are relatively low ~ 0.28-0.33 eV and high conductivity in higher copper content sample. i.e., x=0.2 is probably attributed to the conductive behavior of copper. |
| first_indexed | 2024-03-06T08:16:43Z |
| format | Article |
| id | upm.eprints-30178 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:16:43Z |
| publishDate | 2013 |
| publisher | American Scientific Publishers |
| record_format | dspace |
| spelling | upm.eprints-301782016-11-28T03:45:37Z http://psasir.upm.edu.my/id/eprint/30178/ Synthesis and impedance studies of CuTa2-2xO6-5x perovskites Chon, Mun Ping Tan, Kar Ban Khaw, Chwin Chieh Zainal, Zulkarnain Yap, Taufiq Yun Hin Polycrystalline samples of CuTa2-2xO6-5x are successfully synthesised by solid state reaction at 975 °C over 24 hours and the solid solution limit is confirmed as 0 1 ≤ x ≤ 0 2. The samples are fully indexed based on cubic structure in the space group, Pmmm, International Centre for Diffraction data (ICDD) number 70-611. The refined lattice parameters for CuTa1.8O5.5 (x = 0 1) and CuTa1.6O5 (x = 0 2) are a = 7 5117 (4) and 7.5070 (16), respectively. The determined grain sizes for both samples are in the range of 0.5-3.0 μm for x = 0 1 and 1.0-4.0 μm for x = 0 2. Besides, the samples show no thermal change in a wide range of temperature studied. Meanwhile, high relative permittivity exhibited by sample x = 0 2 at room temperature is also accompanied with high dielectric loss. The recorded activation energies, Ea are relatively low ~ 0.28-0.33 eV and high conductivity in higher copper content sample. i.e., x=0.2 is probably attributed to the conductive behavior of copper. American Scientific Publishers 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/30178/1/Synthesis%20and%20impedance%20studies%20of%20CuTa2.pdf Chon, Mun Ping and Tan, Kar Ban and Khaw, Chwin Chieh and Zainal, Zulkarnain and Yap, Taufiq Yun Hin (2013) Synthesis and impedance studies of CuTa2-2xO6-5x perovskites. Advanced Science Letters, 19 (3). pp. 992-996. ISSN 1936-6612; ESSN: 1936-7317 http://www.aspbs.com/science/contents-science1932013.htm#v19n3 10.1166/asl.2013.4865 |
| spellingShingle | Chon, Mun Ping Tan, Kar Ban Khaw, Chwin Chieh Zainal, Zulkarnain Yap, Taufiq Yun Hin Synthesis and impedance studies of CuTa2-2xO6-5x perovskites |
| title | Synthesis and impedance studies of CuTa2-2xO6-5x perovskites |
| title_full | Synthesis and impedance studies of CuTa2-2xO6-5x perovskites |
| title_fullStr | Synthesis and impedance studies of CuTa2-2xO6-5x perovskites |
| title_full_unstemmed | Synthesis and impedance studies of CuTa2-2xO6-5x perovskites |
| title_short | Synthesis and impedance studies of CuTa2-2xO6-5x perovskites |
| title_sort | synthesis and impedance studies of cuta2 2xo6 5x perovskites |
| url | http://psasir.upm.edu.my/id/eprint/30178/1/Synthesis%20and%20impedance%20studies%20of%20CuTa2.pdf |
| work_keys_str_mv | AT chonmunping synthesisandimpedancestudiesofcuta22xo65xperovskites AT tankarban synthesisandimpedancestudiesofcuta22xo65xperovskites AT khawchwinchieh synthesisandimpedancestudiesofcuta22xo65xperovskites AT zainalzulkarnain synthesisandimpedancestudiesofcuta22xo65xperovskites AT yaptaufiqyunhin synthesisandimpedancestudiesofcuta22xo65xperovskites |