Investigating the electrical conduction and relaxation phenomena in rare earth erbium doped lead free 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 by impedance spectroscopy
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作者:
Khatua, Dipak Kumar
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Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, IndiaIndian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India
Khatua, Dipak Kumar
[1
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Agarwal, Abhishek
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Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, IndiaIndian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India
Agarwal, Abhishek
[1
]
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Ranjan, Rajeev
[1
]
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[1] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India
Rare earth erbium (Er3+) doped 0.94Na(0.5)Bi(0.5)TiO(3)-0.06BaTiO(3) (NBT-6BT) was prepared via a solid state synthesis route as per the nominal formula 0.94Na(0.5)Bi(0.5-x)Er(x)TiO(3)-0 .06BaTiO(3) (0 <= x <= 0.05). Detailed impedance spectroscopy studies, invoking complex impedance and modulus formalisms, were carried out in order to investigate the influence of erbium doping on the long range electrical conduction and localized relaxation in the system. Our results suggest that a low concentration (x = 0.005) of rare earth doping significantly reduces the long range ionic conductivity (with respect to the undoped NBT-6BT value) and decreases the local relaxation, making the system electrically homogeneous. At a higher doping concentration (x >= 0.01), enhancement in the electrical conductivity occurs and local relaxation increases in the system. Observed trends are rationalized on the basis of a model, which hypothesizes phase segregation at a higher concentration of Er-doping. Such segregation leads to the formation of pure NBT-6BT regions and Er-saturated phase with probable dissimilar polar symmetry compared to that of NBT-6BT. A possible correlation between grain size, electrical conductivity, activation energy of conductivity, and local relaxation is indicated. Published by AIP Publishing.
机构:
Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Hu, Bin
;
Pan, Zhao
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Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Pan, Zhao
;
Dai, Ming
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Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Dai, Ming
;
Guo, Fei-Fei
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Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Dept Phys, Harbin 150001, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Guo, Fei-Fei
;
Ning, Huanpo
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Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, EnglandNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Ning, Huanpo
;
Gu, Zheng-Bin
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Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Gu, Zheng-Bin
;
Chen, Jun
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Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Chen, Jun
;
Lu, Ming-Hui
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Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Lu, Ming-Hui
;
Zhang, Shan-Tao
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Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Zhang, Shan-Tao
;
Yang, Bin
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Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Dept Phys, Harbin 150001, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Yang, Bin
;
Cao, Wenwu
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Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Dept Phys, Harbin 150001, Peoples R China
Penn State Univ, Dept Math, University Pk, PA 16802 USA
Penn State Univ, Mat Res Inst, University Pk, PA 16802 USANanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
机构:
Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Hu, Bin
;
Pan, Zhao
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h-index: 0
机构:
Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Pan, Zhao
;
Dai, Ming
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机构:
Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Dai, Ming
;
Guo, Fei-Fei
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机构:
Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Dept Phys, Harbin 150001, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Guo, Fei-Fei
;
Ning, Huanpo
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h-index: 0
机构:
Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, EnglandNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Ning, Huanpo
;
Gu, Zheng-Bin
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机构:
Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Gu, Zheng-Bin
;
Chen, Jun
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Chen, Jun
;
Lu, Ming-Hui
论文数: 0引用数: 0
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机构:
Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Lu, Ming-Hui
;
Zhang, Shan-Tao
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机构:
Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Zhang, Shan-Tao
;
Yang, Bin
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机构:
Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Dept Phys, Harbin 150001, Peoples R ChinaNanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
Yang, Bin
;
Cao, Wenwu
论文数: 0引用数: 0
h-index: 0
机构:
Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Dept Phys, Harbin 150001, Peoples R China
Penn State Univ, Dept Math, University Pk, PA 16802 USA
Penn State Univ, Mat Res Inst, University Pk, PA 16802 USANanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China