Preparation and characterization of Bi4–xPrxTi3O12 solid solutions
The Bi4–xPrxTi3O12 (BPT) solid solutions (x = 0.05, 0.10, 0.15) with small praseodymium content were prepared by solid-state method. Thermal, electric, and dielectric properties of BPT were studied. It was revealed that BPT titanates crystalize in аn orthorhombic structure and exhibit p-type semicon...
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Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina
2017-12-01
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| Series: | Chimica Techno Acta |
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| Online Access: | https://chimicatechnoacta.ru/article/view/2640 |
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| author | A. I. Klyndyuk E. A. Chizhova A. I. Poznyak |
| author_facet | A. I. Klyndyuk E. A. Chizhova A. I. Poznyak |
| author_sort | A. I. Klyndyuk |
| collection | DOAJ |
| description | The Bi4–xPrxTi3O12 (BPT) solid solutions (x = 0.05, 0.10, 0.15) with small praseodymium content were prepared by solid-state method. Thermal, electric, and dielectric properties of BPT were studied. It was revealed that BPT titanates crystalize in аn orthorhombic structure and exhibit p-type semiconductivity. Dielectric constant of BPT increased, Curie temperature (TC), electrical conductivity and dielectric losses decreased, but lattice parameters and thermo-EMF coefficient remained practically unchanged with the increase of praseodymium content in layered Bi4–xPrxTi3O12. It was determined that activation energy of direct current (DC) electrical conductivity and linear thermal expansion coefficient (LTEC) of BPT changes at ferroelectric (FE) → paraelectric (PE) phase transition. The activation energy and LTEC changed below and above TC from 1.08–1.56 eV to 0.45–0.86 eV and from (9.10–10.80)×10–6 K–1 to (13.12-14.61)×10–6 K–1, respectively. The AC electrical conductivity studies of BPT illustrated short-range order with ionic translations assisted by small-polaron hopping. |
| format | Article |
| id | doaj-art-c9b6bfafbb174cdeb1a4ba6400fb9f12 |
| institution | Kabale University |
| issn | 2411-1414 |
| language | English |
| publishDate | 2017-12-01 |
| publisher | Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina |
| record_format | Article |
| series | Chimica Techno Acta |
| spelling | doaj-art-c9b6bfafbb174cdeb1a4ba6400fb9f122024-12-25T09:36:53ZengUralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. ElʹcinaChimica Techno Acta2411-14142017-12-014421021710.15826/chimtech/2017.4.4.012357Preparation and characterization of Bi4–xPrxTi3O12 solid solutionsA. I. Klyndyuk0E. A. Chizhova1A. I. Poznyak2Belarus State Technological University, MinskBelarus State Technological University, MinskBelarus State Technological University, MinskThe Bi4–xPrxTi3O12 (BPT) solid solutions (x = 0.05, 0.10, 0.15) with small praseodymium content were prepared by solid-state method. Thermal, electric, and dielectric properties of BPT were studied. It was revealed that BPT titanates crystalize in аn orthorhombic structure and exhibit p-type semiconductivity. Dielectric constant of BPT increased, Curie temperature (TC), electrical conductivity and dielectric losses decreased, but lattice parameters and thermo-EMF coefficient remained practically unchanged with the increase of praseodymium content in layered Bi4–xPrxTi3O12. It was determined that activation energy of direct current (DC) electrical conductivity and linear thermal expansion coefficient (LTEC) of BPT changes at ferroelectric (FE) → paraelectric (PE) phase transition. The activation energy and LTEC changed below and above TC from 1.08–1.56 eV to 0.45–0.86 eV and from (9.10–10.80)×10–6 K–1 to (13.12-14.61)×10–6 K–1, respectively. The AC electrical conductivity studies of BPT illustrated short-range order with ionic translations assisted by small-polaron hopping.https://chimicatechnoacta.ru/article/view/2640layered bismuth titanatesdielectric constantdielectric losseselectrical conductivitythermo-emfthermal expansion |
| spellingShingle | A. I. Klyndyuk E. A. Chizhova A. I. Poznyak Preparation and characterization of Bi4–xPrxTi3O12 solid solutions Chimica Techno Acta layered bismuth titanates dielectric constant dielectric losses electrical conductivity thermo-emf thermal expansion |
| title | Preparation and characterization of Bi4–xPrxTi3O12 solid solutions |
| title_full | Preparation and characterization of Bi4–xPrxTi3O12 solid solutions |
| title_fullStr | Preparation and characterization of Bi4–xPrxTi3O12 solid solutions |
| title_full_unstemmed | Preparation and characterization of Bi4–xPrxTi3O12 solid solutions |
| title_short | Preparation and characterization of Bi4–xPrxTi3O12 solid solutions |
| title_sort | preparation and characterization of bi4 xprxti3o12 solid solutions |
| topic | layered bismuth titanates dielectric constant dielectric losses electrical conductivity thermo-emf thermal expansion |
| url | https://chimicatechnoacta.ru/article/view/2640 |
| work_keys_str_mv | AT aiklyndyuk preparationandcharacterizationofbi4xprxti3o12solidsolutions AT eachizhova preparationandcharacterizationofbi4xprxti3o12solidsolutions AT aipoznyak preparationandcharacterizationofbi4xprxti3o12solidsolutions |