Effect of Cl substitution on the microstructure, dielectric and optical properties of CaCu3Ti4O12 ceramics
This study investigates the enhanced properties of CaCu3Ti4O12 (CCTO) ceramics by substituting oxygen anions with chlorine to form CaCu3Ti4O10Cl2 (CCTO-Cl2). The structural, morphological, optical, and dielectric characteristics of CCTO-Cl2 were systematically analyzed. Among the calcination tempera...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
|
| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379724007575 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832595746833039360 |
|---|---|
| author | Najwa. Gouitaa Sahil Kumar Fatima Zahra. Ahjyaje Taj-dine. Lamcharfi Amina. Benatia Mustapha. Abarkan Mamta Shandilya |
| author_facet | Najwa. Gouitaa Sahil Kumar Fatima Zahra. Ahjyaje Taj-dine. Lamcharfi Amina. Benatia Mustapha. Abarkan Mamta Shandilya |
| author_sort | Najwa. Gouitaa |
| collection | DOAJ |
| description | This study investigates the enhanced properties of CaCu3Ti4O12 (CCTO) ceramics by substituting oxygen anions with chlorine to form CaCu3Ti4O10Cl2 (CCTO-Cl2). The structural, morphological, optical, and dielectric characteristics of CCTO-Cl2 were systematically analyzed. Among the calcination temperatures studied, 900 °C emerged as the optimal condition, significantly enhancing all properties. X-ray diffraction (XRD) confirmed phase formation and a reduction in lattice parameters due to Cl− substitution and thermal treatment. Scanning electron microscopy (SEM) revealed substantial grain growth and densification, contributing to improved material density. Optical analysis showed a redshift in absorption peaks, and the band gap energy reduced to 1.68 eV, attributed to enhanced crystallinity and phase transformations. Dielectric measurements at 900 °C demonstrated a colossal dielectric constant of 3.259 × 104 and a reduced dielectric loss of 0.17, indicating exceptional energy storage potential. These findings underscore the effectiveness of Cl− substitution and calcination at 900 °C in optimizing CCTO-Cl2 ceramics for advanced dielectric and electronic applications. |
| format | Article |
| id | doaj-art-3e6c77414524444bb82a4322b13d7b28 |
| institution | Kabale University |
| issn | 2211-3797 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj-art-3e6c77414524444bb82a4322b13d7b282025-01-18T05:04:29ZengElsevierResults in Physics2211-37972025-01-0168108072Effect of Cl substitution on the microstructure, dielectric and optical properties of CaCu3Ti4O12 ceramicsNajwa. Gouitaa0Sahil Kumar1Fatima Zahra. Ahjyaje2Taj-dine. Lamcharfi3Amina. Benatia4Mustapha. Abarkan5Mamta Shandilya6Signals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, University Sidi Mohamed Ben Abdellah USMBA, FST. Fez, Imouzzer Road B.P. 2202, Morocco; Corresponding authors.School of Physics and Materials Science, Shoolini University, Solan 173229, India; Corresponding authors.Signals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, University Sidi Mohamed Ben Abdellah USMBA, FST. Fez, Imouzzer Road B.P. 2202, MoroccoSignals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, University Sidi Mohamed Ben Abdellah USMBA, FST. Fez, Imouzzer Road B.P. 2202, MoroccoSignals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, University Sidi Mohamed Ben Abdellah USMBA, FST. Fez, Imouzzer Road B.P. 2202, MoroccoLSI, Department of Mathematics, Physics and Computer Science, Polydisciplinary Faculty, Sidi Mohamed Ben Abdellah University, B.P. 1223, Taza, MoroccoSchool of Physics and Materials Science, Shoolini University, Solan 173229, IndiaThis study investigates the enhanced properties of CaCu3Ti4O12 (CCTO) ceramics by substituting oxygen anions with chlorine to form CaCu3Ti4O10Cl2 (CCTO-Cl2). The structural, morphological, optical, and dielectric characteristics of CCTO-Cl2 were systematically analyzed. Among the calcination temperatures studied, 900 °C emerged as the optimal condition, significantly enhancing all properties. X-ray diffraction (XRD) confirmed phase formation and a reduction in lattice parameters due to Cl− substitution and thermal treatment. Scanning electron microscopy (SEM) revealed substantial grain growth and densification, contributing to improved material density. Optical analysis showed a redshift in absorption peaks, and the band gap energy reduced to 1.68 eV, attributed to enhanced crystallinity and phase transformations. Dielectric measurements at 900 °C demonstrated a colossal dielectric constant of 3.259 × 104 and a reduced dielectric loss of 0.17, indicating exceptional energy storage potential. These findings underscore the effectiveness of Cl− substitution and calcination at 900 °C in optimizing CCTO-Cl2 ceramics for advanced dielectric and electronic applications.http://www.sciencedirect.com/science/article/pii/S2211379724007575CeramicsCaCu3Ti4O12DopingOpticalDielectricImpedance |
| spellingShingle | Najwa. Gouitaa Sahil Kumar Fatima Zahra. Ahjyaje Taj-dine. Lamcharfi Amina. Benatia Mustapha. Abarkan Mamta Shandilya Effect of Cl substitution on the microstructure, dielectric and optical properties of CaCu3Ti4O12 ceramics Results in Physics Ceramics CaCu3Ti4O12 Doping Optical Dielectric Impedance |
| title | Effect of Cl substitution on the microstructure, dielectric and optical properties of CaCu3Ti4O12 ceramics |
| title_full | Effect of Cl substitution on the microstructure, dielectric and optical properties of CaCu3Ti4O12 ceramics |
| title_fullStr | Effect of Cl substitution on the microstructure, dielectric and optical properties of CaCu3Ti4O12 ceramics |
| title_full_unstemmed | Effect of Cl substitution on the microstructure, dielectric and optical properties of CaCu3Ti4O12 ceramics |
| title_short | Effect of Cl substitution on the microstructure, dielectric and optical properties of CaCu3Ti4O12 ceramics |
| title_sort | effect of cl substitution on the microstructure dielectric and optical properties of cacu3ti4o12 ceramics |
| topic | Ceramics CaCu3Ti4O12 Doping Optical Dielectric Impedance |
| url | http://www.sciencedirect.com/science/article/pii/S2211379724007575 |
| work_keys_str_mv | AT najwagouitaa effectofclsubstitutiononthemicrostructuredielectricandopticalpropertiesofcacu3ti4o12ceramics AT sahilkumar effectofclsubstitutiononthemicrostructuredielectricandopticalpropertiesofcacu3ti4o12ceramics AT fatimazahraahjyaje effectofclsubstitutiononthemicrostructuredielectricandopticalpropertiesofcacu3ti4o12ceramics AT tajdinelamcharfi effectofclsubstitutiononthemicrostructuredielectricandopticalpropertiesofcacu3ti4o12ceramics AT aminabenatia effectofclsubstitutiononthemicrostructuredielectricandopticalpropertiesofcacu3ti4o12ceramics AT mustaphaabarkan effectofclsubstitutiononthemicrostructuredielectricandopticalpropertiesofcacu3ti4o12ceramics AT mamtashandilya effectofclsubstitutiononthemicrostructuredielectricandopticalpropertiesofcacu3ti4o12ceramics |