Impedance spectroscopy and electrical conductivity of 0.7BiNdxFeO3–0.3BaTiO3 ferroelectric ceramics
0.7Bi[Formula: see text]NdxFeO3–0.3BaTiO3 (BNFO–BTO, [Formula: see text], 0.010, 0.020 and 0.050) ceramics were fabricated using the high-temperature solid-state reaction method. The X-ray diffraction (XRD) patterns revealed that the primary phase in these ceramics was pseudocubic. The Scanning Elec...
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World Scientific Publishing
2025-04-01
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| Series: | Journal of Advanced Dielectrics |
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| Online Access: | https://www.worldscientific.com/doi/10.1142/S2010135X24500140 |
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| author | Hui Tang Xiao-Cao Peng Jiu-Ming Ma Zhi-Peng Yang Xiang Niu Jun-Xia Wen Xin-Gui Tang Sheng-Guo Lu |
| author_facet | Hui Tang Xiao-Cao Peng Jiu-Ming Ma Zhi-Peng Yang Xiang Niu Jun-Xia Wen Xin-Gui Tang Sheng-Guo Lu |
| author_sort | Hui Tang |
| collection | DOAJ |
| description | 0.7Bi[Formula: see text]NdxFeO3–0.3BaTiO3 (BNFO–BTO, [Formula: see text], 0.010, 0.020 and 0.050) ceramics were fabricated using the high-temperature solid-state reaction method. The X-ray diffraction (XRD) patterns revealed that the primary phase in these ceramics was pseudocubic. The Scanning Electron Microscopy (SEM) micrographs exhibited dense microstructures throughout all BNFO–BTO ceramics. Furthermore, the temperature dependence of dielectric behaviors and ferroelectric hysteresis loop shapes suggested the occurrence of a relaxor ferroelectric-type phase transition in BNFO–BTO ceramics. Additionally, the frequency dispersion characteristics and remnant polarization were enhanced with increasing substitution of Bi[Formula: see text] by Nd[Formula: see text]. Conducted impedance analysis on 0.7Bi[Formula: see text]NdxFeO3–0.3BaTiO3 ceramics and two dielectric responses of the grain at high frequency and grain boundary at low frequency were illustrated, respectively. The combination of imaginary impedance ([Formula: see text] and imaginary modulus ([Formula: see text] versus log[Formula: see text]f plots revealed that the charge carriers’ motion was not entirely long-range, short-range migration also exists. Through calculations based on Curie–Weiss Law, the relaxation activation energy ([Formula: see text] and conductance activation energy ([Formula: see text] were investigated, confirming that doping Nd[Formula: see text] effectively mitigates the concentration of oxygen vacancies (OVs) and prevents the formation of oxygen vacancies clusters, ultimately suppressing conductivity in BNFO–BTO ceramics. |
| format | Article |
| id | doaj-art-b6bf5cbea6784730b2eca20c08645c1e |
| institution | Kabale University |
| issn | 2010-135X 2010-1368 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | World Scientific Publishing |
| record_format | Article |
| series | Journal of Advanced Dielectrics |
| spelling | doaj-art-b6bf5cbea6784730b2eca20c08645c1e2025-01-07T03:28:07ZengWorld Scientific PublishingJournal of Advanced Dielectrics2010-135X2010-13682025-04-01150210.1142/S2010135X24500140Impedance spectroscopy and electrical conductivity of 0.7BiNdxFeO3–0.3BaTiO3 ferroelectric ceramicsHui Tang0Xiao-Cao Peng1Jiu-Ming Ma2Zhi-Peng Yang3Xiang Niu4Jun-Xia Wen5Xin-Gui Tang6Sheng-Guo Lu7School of Mechanical and Electrical Engineering, Liuzhou Vocational & Technical College, Liuzhou 545006, P. R. ChinaGuangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, P. R. ChinaSchool of Automotive Technology, Liuzhou Railway Vocational Technical College, Liuzhou 545006, P. R. ChinaGuangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, P. R. ChinaGuangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, P. R. ChinaGuangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, P. R. ChinaSchool of Physics & Optoelectric Engineering, Guangdong University of Technology, Guangzhou 510006, P. R. ChinaGuangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, P. R. China0.7Bi[Formula: see text]NdxFeO3–0.3BaTiO3 (BNFO–BTO, [Formula: see text], 0.010, 0.020 and 0.050) ceramics were fabricated using the high-temperature solid-state reaction method. The X-ray diffraction (XRD) patterns revealed that the primary phase in these ceramics was pseudocubic. The Scanning Electron Microscopy (SEM) micrographs exhibited dense microstructures throughout all BNFO–BTO ceramics. Furthermore, the temperature dependence of dielectric behaviors and ferroelectric hysteresis loop shapes suggested the occurrence of a relaxor ferroelectric-type phase transition in BNFO–BTO ceramics. Additionally, the frequency dispersion characteristics and remnant polarization were enhanced with increasing substitution of Bi[Formula: see text] by Nd[Formula: see text]. Conducted impedance analysis on 0.7Bi[Formula: see text]NdxFeO3–0.3BaTiO3 ceramics and two dielectric responses of the grain at high frequency and grain boundary at low frequency were illustrated, respectively. The combination of imaginary impedance ([Formula: see text] and imaginary modulus ([Formula: see text] versus log[Formula: see text]f plots revealed that the charge carriers’ motion was not entirely long-range, short-range migration also exists. Through calculations based on Curie–Weiss Law, the relaxation activation energy ([Formula: see text] and conductance activation energy ([Formula: see text] were investigated, confirming that doping Nd[Formula: see text] effectively mitigates the concentration of oxygen vacancies (OVs) and prevents the formation of oxygen vacancies clusters, ultimately suppressing conductivity in BNFO–BTO ceramics.https://www.worldscientific.com/doi/10.1142/S2010135X24500140Ferroelectric ceramicimpedanceactivation energy |
| spellingShingle | Hui Tang Xiao-Cao Peng Jiu-Ming Ma Zhi-Peng Yang Xiang Niu Jun-Xia Wen Xin-Gui Tang Sheng-Guo Lu Impedance spectroscopy and electrical conductivity of 0.7BiNdxFeO3–0.3BaTiO3 ferroelectric ceramics Journal of Advanced Dielectrics Ferroelectric ceramic impedance activation energy |
| title | Impedance spectroscopy and electrical conductivity of 0.7BiNdxFeO3–0.3BaTiO3 ferroelectric ceramics |
| title_full | Impedance spectroscopy and electrical conductivity of 0.7BiNdxFeO3–0.3BaTiO3 ferroelectric ceramics |
| title_fullStr | Impedance spectroscopy and electrical conductivity of 0.7BiNdxFeO3–0.3BaTiO3 ferroelectric ceramics |
| title_full_unstemmed | Impedance spectroscopy and electrical conductivity of 0.7BiNdxFeO3–0.3BaTiO3 ferroelectric ceramics |
| title_short | Impedance spectroscopy and electrical conductivity of 0.7BiNdxFeO3–0.3BaTiO3 ferroelectric ceramics |
| title_sort | impedance spectroscopy and electrical conductivity of 0 7bindxfeo3 0 3batio3 ferroelectric ceramics |
| topic | Ferroelectric ceramic impedance activation energy |
| url | https://www.worldscientific.com/doi/10.1142/S2010135X24500140 |
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