Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics
La/Mn codoped BaTiO3 with different La2O3 content, ranging from 0.1 to 5.0 at% La, was investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all investigated samples. The samples were sintered at 1320°C and 1350°C for two hours. Micro...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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University of Novi Sad
2010-12-01
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| Series: | Processing and Application of Ceramics |
| Subjects: | |
| Online Access: | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2010%2004.pdf |
| _version_ | 1818419021008076800 |
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| author | Vesna Paunović Vojislav Mitić Vladimir Pavlović Miroslav Miljković Ljiljana Živković |
| author_facet | Vesna Paunović Vojislav Mitić Vladimir Pavlović Miroslav Miljković Ljiljana Živković |
| author_sort | Vesna Paunović |
| collection | DOAJ |
| description | La/Mn codoped BaTiO3 with different La2O3 content, ranging from 0.1 to 5.0 at% La, was investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all investigated samples. The samples were sintered at 1320°C and 1350°C for two hours. Microstructural studies were done using SEM and EDS analysis. The fine-grained microstructure was obtained even for low content of La. The appearance of secondary abnormal grains with serrated features along grain boundaries was observed in 1.0 at% La-BaTiO3 sintered at 1350°C. Nearly flat permittivity-temperature response was obtained in specimens with 2.0 and 5.0 at% La. Using the modified Curie-Weiss law a critical exponent γ and C’were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 and great departure from the Curie-Weiss law for low doped ceramics. |
| first_indexed | 2024-12-14T12:31:56Z |
| format | Article |
| id | doaj.art-b72245c4c20143c094752fdf8ec9e810 |
| institution | Directory Open Access Journal |
| issn | 1820-6131 |
| language | English |
| last_indexed | 2024-12-14T12:31:56Z |
| publishDate | 2010-12-01 |
| publisher | University of Novi Sad |
| record_format | Article |
| series | Processing and Application of Ceramics |
| spelling | doaj.art-b72245c4c20143c094752fdf8ec9e8102022-12-21T23:01:10ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312010-12-0144253258Microstructure evolution and phase transition in La/Mn doped barium titanate ceramicsVesna PaunovićVojislav MitićVladimir PavlovićMiroslav MiljkovićLjiljana ŽivkovićLa/Mn codoped BaTiO3 with different La2O3 content, ranging from 0.1 to 5.0 at% La, was investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all investigated samples. The samples were sintered at 1320°C and 1350°C for two hours. Microstructural studies were done using SEM and EDS analysis. The fine-grained microstructure was obtained even for low content of La. The appearance of secondary abnormal grains with serrated features along grain boundaries was observed in 1.0 at% La-BaTiO3 sintered at 1350°C. Nearly flat permittivity-temperature response was obtained in specimens with 2.0 and 5.0 at% La. Using the modified Curie-Weiss law a critical exponent γ and C’were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 and great departure from the Curie-Weiss law for low doped ceramics.http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2010%2004.pdfBaTiO3SinteringMicrostructuresFerroelectric properties |
| spellingShingle | Vesna Paunović Vojislav Mitić Vladimir Pavlović Miroslav Miljković Ljiljana Živković Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics Processing and Application of Ceramics BaTiO3 Sintering Microstructures Ferroelectric properties |
| title | Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics |
| title_full | Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics |
| title_fullStr | Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics |
| title_full_unstemmed | Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics |
| title_short | Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics |
| title_sort | microstructure evolution and phase transition in la mn doped barium titanate ceramics |
| topic | BaTiO3 Sintering Microstructures Ferroelectric properties |
| url | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2010%2004.pdf |
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