| INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
Prev
Next
|
|
|
Structural and dielectric properties of giant dielectric Na1/2Sm1/2Cu3Ti4O12 ceramics prepared by reactive sintering methods |
| H Mahfoz Kotb1,2 |
1 Department of Physics, College of Science, King Faisal University, Al-Hassa 31982, Saudi Arabia;
2 Department of Physics, Faculty of Science, Assiut University, Assiut 71516, Egypt |
|
|
|
|
Abstract Na0.5Sm0.5Cu3Ti4O12 (NSCTO) ceramics have been prepared by reactive sintering of amorphous powder. Spark plasma sintering (SPS) for 10 min at 1025℃ and conventional sintering (CS) for 10 h at 1090℃ have been employed. X-ray diffraction measurements confirmed the pure CCTO-like phase for SPS and CS NSCTO ceramics. The SPS ceramic showed an average grain size of 500 nm, which is much smaller than that of the CS (~5 μm) sample. The impedance spectroscopy measurements revealed an electrically inhomogeneous structure in the prepared ceramics. While the resistivities of grains of both ceramic samples were in the same order of magnitude, the resistivity of grain-boundaries of the CS ceramic was three orders of magnitude greater than that of the SPS ceramic. Both of the samples showed giant dielectric constant (>103) over wide ranges of temperatures and frequencies. Nevertheless, the room-temperature dielectric loss of the SPS NSCTO (3.2 at 1.1 kHz) ceramic sample was higher than that of the CS NSCTO (0.08 at 1.1 kHz) ceramic sample due to the reduced grain-boundary resistivity of the former. Two dielectric relaxations were detected for each sample and attributed to the relaxations in grains and grain-boundaries. The dielectric behavior of the SPS and CS NSCTO ceramics could be interpreted in terms of the internal barrier layer capacitor (IBLC) model.
|
Received: 12 March 2019
Revised: 17 July 2019
Accepted manuscript online:
|
|
PACS:
|
82.45.Xy
|
(Ceramics in electrochemistry)
|
| |
81.20.Ev
|
(Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)
|
| |
77.22.Gm
|
(Dielectric loss and relaxation)
|
| |
84.37.+q
|
(Measurements in electric variables (including voltage, current, resistance, capacitance, inductance, impedance, and admittance, etc.))
|
|
Corresponding Authors:
H Mahfoz Kotb
E-mail: hkotb@kfu.edu.sa
|
Cite this article:
H Mahfoz Kotb Structural and dielectric properties of giant dielectric Na1/2Sm1/2Cu3Ti4O12 ceramics prepared by reactive sintering methods 2019 Chin. Phys. B 28 098202
|
| [40] |
Ni L, Fu M, Liu Y, Tang T, Wang S, Zou B and Zhao S 2016 J. Mater. Sci.:Mater. Electron. 27 111
|
| [1] |
Krohns S, Lunkenheimer P, Meissner S, Reller A, Gleich B, Rathgeber A, Gaugler T, Buhl H U, Sinclair D C and Loidl A 2011 Nat Mater. 10 899
|
| [41] |
Sun X, Wang C, Wang G, Lei C, Li T, Liu L and Feteira A 2013 J. Am. Ceram. Soc. 96 1497
|
| [2] |
Subramanian M A, Li D, Duan N, Reisner B A and Sleight A W 2000 J. Solid State Chem. 151 323
|
| [42] |
Yang L, Chao X, Wei L, Zhao N and Yang Z 2016 J. Mater. Sci.:Mater. Electron. 27 2221
|
| [3] |
Zhao N, Liang P, Wei L, Yang L and Yang Z 2015 Ceram. Int. 41 8501
|
| [4] |
Sebald J, Krohns S, Lunkenheimer P, Ebbinghaus S G, Riegg S, Reller A and Loidl A 2010 Solid State Commun. 150 857
|
| [5] |
Ahmad M M and Mahfoz Kotb H 2015 J. Mater. Sci.:Mater. Electron. 26 8939
|
| [6] |
Su Y and Wang Y 2016 Appl. Phys. A 122 249
|
| [7] |
Thongbai P, Yamwong T and Maensiri S 2012 Mater. Res. Bull. 47 432
|
| [8] |
Mahfoz Kotb H and Ahmad M M 2016 Chin. Phys. B 25 128201
|
| [9] |
Somphan W, Thongbai P, Yamwong T and Maensiri S 2013 Mater. Res. Bull. 48 4087
|
| [10] |
Li Y, Liang P, Chao X and Yang Z 2013 Ceram. Int. 39 7879
|
| [11] |
Zheng Q and Fan H 2012 J. Mater. Sci. & Technol. 28 920
|
| [12] |
Kim B K, Lee H S, Lee J W, Lee S E and Cho Y S 2010 J. Am. Ceram. Soc. 93 2419
|
| [13] |
Swatsitang E, Niyompan A and Putjuso T 2013 J. Mater. Sci.:Mater. Electron. 24 3514
|
| [14] |
Huang X, Jiang Y and Wu K 2015 Procedia Eng. 102 468
|
| [15] |
Jumpatam J, Putasaeng B, Chanlek N, Kidkhunthod P, Thongbai P, Maensiri S and Chindaprasirt P 2017 RSC Adv. 7 4092
|
| [16] |
Cortés J A, Cotrim G, Orrego S, Simões A Z and Ramírez M A 2018 J. Alloys Compd. 735 140
|
| [17] |
De Almeida-Didry S, Nomel M M, Autret C, Honstettre C, Lucas A, Pacreau F and Gervais F 2018 J. Eur. Ceram. Soc. 38 3182
|
| [18] |
Lopera A, Ramirez M A, García C, Paucar C and Marín J 2014 Inorg. Chem. Commun. 40 5
|
| [19] |
Thomazini D, Gelfuso M V, Volpi G M S and Eiras J A 2015 Int. J. Appl. Ceram. Technol. 12 E73
|
| [20] |
Lin H, He X, Gong Y, Pang D and Yi Z 2018 Ceram. Int. 44 8650
|
| [21] |
Kumar R, Zulfequar M and Senguttuvan T D 2016 J. Mater. Sci.:Mater. Electron. 27 5233
|
| [22] |
Ahmad M M and Yamada K 2014 J. Appl. Phys. 115 154103
|
| [23] |
Hao W, Xu P, Wang M, Yang S, Yupeng W, Wu H, Sun L, Cao E and Zhang Y 2018 J. Alloys Compd. 740 1159
|
| [24] |
Li M, Shen Z, Nygren M, Feteira A, Sinclair D C and West A R 2009 J. Appl. Phys. 106 104106
|
| [25] |
Li M, Sinclair D C and West A R 2011 J. Appl. Phys. 109 084106
|
| [26] |
Barsoukov E and Macdonald J R 2005 Impedance spectroscopy:theory, experiment, and applications (New York:John Wiley & Sons)
|
| [27] |
Wu J, Qi T, Li T T, Qin Q W, Li G Q, Zhu B L, Xiang Z D and Xie C S 2012 J. Mater. Sci.:Mater. Electron. 23 1143
|
| [28] |
Abram E, Sinclair D and West A 2003 J. Electroceram. 10 165
|
| [29] |
Dubey A K, Singh P, Singh S, Kumar D and Parkash O 2011 J. Alloys Compd. 509 3899
|
| [30] |
Yuan W X 2012 Solid State Sci. 14 330
|
| [31] |
Liang P, Li Y, Zhao Y, Wei L and Yang Z 2013 J. Appl. Phys. 113 224102
|
| [32] |
Costa S I R, Li M, Frade J R and Sinclair D C 2013 RSC Adv. 3 7030
|
| [33] |
Schmidt R, Pandey S, Fiorenza P and Sinclair D C 2013 RSC Adv. 3 14580
|
| [34] |
Ahmad M M 2013 Appl. Phys. Lett. 102 232908
|
| [35] |
Jonscher A K 1977 Nature 267 673
|
| [36] |
Cortés J A, Cotrim G, Orrego S, Simões A Z and Ramírez M A 2018 J. Alloys Compd. 735 140
|
| [37] |
Pradhan D K, Misra P, Puli V S, Sahoo S, Pradhan D K and Katiyar R S 2014 J. Appl. Phys. 115 243904
|
| [38] |
Sinclair D C and West A R 1989 J. Appl. Phys. 66 3850
|
| [39] |
Wang C, Ni W, Zhang D, Sun X, Wang J, Li H and Zhang N 2016 J. Electroceram. 36 46
|
| [40] |
Ni L, Fu M, Liu Y, Tang T, Wang S, Zou B and Zhao S 2016 J. Mater. Sci.:Mater. Electron. 27 111
|
| [41] |
Sun X, Wang C, Wang G, Lei C, Li T, Liu L and Feteira A 2013 J. Am. Ceram. Soc. 96 1497
|
| [42] |
Yang L, Chao X, Wei L, Zhao N and Yang Z 2016 J. Mater. Sci.:Mater. Electron. 27 2221
|
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|
