Dielectric and Electric Properties of Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> Ceramics Doped with Europium and Hafnium Ions
Lanthanum-modified BaTiO<sub>3</sub> electroceramic materials have superior dielectric and piezoelectric properties. Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> (BLT4) seems to be a serious candidate for ultracondens...
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| Online Access: | https://www.mdpi.com/1996-1944/15/2/413 |
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| author | Małgorzata Adamczyk-Habrajska Beata Wodecka-Duś Tomasz Goryczka Diana Szalbot Mateusz Bara Łukasz Ciepły |
| author_facet | Małgorzata Adamczyk-Habrajska Beata Wodecka-Duś Tomasz Goryczka Diana Szalbot Mateusz Bara Łukasz Ciepły |
| author_sort | Małgorzata Adamczyk-Habrajska |
| collection | DOAJ |
| description | Lanthanum-modified BaTiO<sub>3</sub> electroceramic materials have superior dielectric and piezoelectric properties. Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> (BLT4) seems to be a serious candidate for ultracondensator applications. This manuscript describes the results of hafnium and europium modification of BLT 4 ceramics. The pure and doped ceramic materials were synthesized by the conventional mixed oxide method. The microstructure of obtained samples was examined by scanning electron microscope. The investigations reveal strong correlations between the presence of admixture and the grain size, which was especially visible in the case of the hafnium dopant. The frequency and temperature dielectric characteristics measurements revealed a decrease in electric permittivity. Moreover, the impedance spectroscopy investigations showed severe changes in grains and grain-boundary resistivity, which was connected with changes in electric conductivity. |
| first_indexed | 2024-03-10T01:04:56Z |
| format | Article |
| id | doaj.art-e3a45169d6934ce4924f6590cb7fbb38 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:04:56Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e3a45169d6934ce4924f6590cb7fbb382023-11-23T14:28:45ZengMDPI AGMaterials1996-19442022-01-0115241310.3390/ma15020413Dielectric and Electric Properties of Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> Ceramics Doped with Europium and Hafnium IonsMałgorzata Adamczyk-Habrajska0Beata Wodecka-Duś1Tomasz Goryczka2Diana Szalbot3Mateusz Bara4Łukasz Ciepły5Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 41-500 Chorzów, PolandFaculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 41-500 Chorzów, PolandFaculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 41-500 Chorzów, PolandFaculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 41-500 Chorzów, PolandFaculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 41-500 Chorzów, PolandFaculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 41-500 Chorzów, PolandLanthanum-modified BaTiO<sub>3</sub> electroceramic materials have superior dielectric and piezoelectric properties. Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> (BLT4) seems to be a serious candidate for ultracondensator applications. This manuscript describes the results of hafnium and europium modification of BLT 4 ceramics. The pure and doped ceramic materials were synthesized by the conventional mixed oxide method. The microstructure of obtained samples was examined by scanning electron microscope. The investigations reveal strong correlations between the presence of admixture and the grain size, which was especially visible in the case of the hafnium dopant. The frequency and temperature dielectric characteristics measurements revealed a decrease in electric permittivity. Moreover, the impedance spectroscopy investigations showed severe changes in grains and grain-boundary resistivity, which was connected with changes in electric conductivity.https://www.mdpi.com/1996-1944/15/2/413ferroelectric propertiesceramicsdielectric propertiesimpedance spectroscopy |
| spellingShingle | Małgorzata Adamczyk-Habrajska Beata Wodecka-Duś Tomasz Goryczka Diana Szalbot Mateusz Bara Łukasz Ciepły Dielectric and Electric Properties of Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> Ceramics Doped with Europium and Hafnium Ions Materials ferroelectric properties ceramics dielectric properties impedance spectroscopy |
| title | Dielectric and Electric Properties of Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> Ceramics Doped with Europium and Hafnium Ions |
| title_full | Dielectric and Electric Properties of Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> Ceramics Doped with Europium and Hafnium Ions |
| title_fullStr | Dielectric and Electric Properties of Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> Ceramics Doped with Europium and Hafnium Ions |
| title_full_unstemmed | Dielectric and Electric Properties of Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> Ceramics Doped with Europium and Hafnium Ions |
| title_short | Dielectric and Electric Properties of Ba<sub>0.996</sub>La<sub>0.004</sub>Ti<sub>0.999</sub>O<sub>3</sub> Ceramics Doped with Europium and Hafnium Ions |
| title_sort | dielectric and electric properties of ba sub 0 996 sub la sub 0 004 sub ti sub 0 999 sub o sub 3 sub ceramics doped with europium and hafnium ions |
| topic | ferroelectric properties ceramics dielectric properties impedance spectroscopy |
| url | https://www.mdpi.com/1996-1944/15/2/413 |
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