Electrical properties of calcium doped BiFeO3 films on LaNiO3 coated Pt substrates
Pure and calcium-modified (CaxBi1-xFeO3, x = 0.0, 0.1, 0.2, 0.30) thin films were fabricated on Pt(111)/Ti/SiO2/Si substrates by the soft chemical method using LaNiO3 as the bottom electrode. Highly (200)-oriented BFO film was coherently grown on LNO at 500 °C. Ca-doped BiFeO3 films have a dense mic...
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| Format: | Article |
| Language: | English |
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University of Novi Sad
2018-06-01
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| Series: | Processing and Application of Ceramics |
| Subjects: | |
| Online Access: | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2040%2009.pdf |
| _version_ | 1818511094622191616 |
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| author | Lucas Fabricio Goncalves Leandro Silva Rosa Rocha Bruno Hangai Pedro Paulo Silva Ortega Elson Longo Alexandre Z. Simões |
| author_facet | Lucas Fabricio Goncalves Leandro Silva Rosa Rocha Bruno Hangai Pedro Paulo Silva Ortega Elson Longo Alexandre Z. Simões |
| author_sort | Lucas Fabricio Goncalves |
| collection | DOAJ |
| description | Pure and calcium-modified (CaxBi1-xFeO3, x = 0.0, 0.1, 0.2, 0.30) thin films were fabricated on Pt(111)/Ti/SiO2/Si substrates by the soft chemical method using LaNiO3 as the bottom electrode. Highly (200)-oriented BFO film was coherently grown on LNO at 500 °C. Ca-doped BiFeO3 films have a dense microstructure and rounded grains. The conventional problem of the leakage current for the highest doped film was reduced from 10-5 to 10-10 with remarkable improvement in the film/electrode interface, chemical homogeneity, crystallinity, and morphology of the BFO film. Enhanced ferroelectricity was observed at room temperature due to the bottom electrode. Fatigue-free films were grown on LaNiO3 bottom electrodes with no degradation after 1×1010 switching cycles at an applied voltage of 5 V with a frequency of 1 MHz. After several tests the capacitors retained 77% of its polarization upon a retention time of 104 s. Room temperature magnetic coercive field measurements indicate that the magnetic behaviour is influenced by the nature of the bottom electrode. |
| first_indexed | 2024-12-10T23:28:50Z |
| format | Article |
| id | doaj.art-661a6b3cfb844134836021f54746c122 |
| institution | Directory Open Access Journal |
| issn | 1820-6131 2406-1034 |
| language | English |
| last_indexed | 2024-12-10T23:28:50Z |
| publishDate | 2018-06-01 |
| publisher | University of Novi Sad |
| record_format | Article |
| series | Processing and Application of Ceramics |
| spelling | doaj.art-661a6b3cfb844134836021f54746c1222022-12-22T01:29:28ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312406-10342018-06-0112215316310.2298/PAC1802153GElectrical properties of calcium doped BiFeO3 films on LaNiO3 coated Pt substratesLucas Fabricio Goncalves0Leandro Silva Rosa Rocha1Bruno Hangai2Pedro Paulo Silva Ortega3Elson Longo4Alexandre Z. Simões5Sao Paulo State University (Unesp), School of Engineering, Guaratinguetá, BrazilSao Paulo State University (Unesp), School of Engineering, Guaratinguetá, BrazilSao Paulo State University (Unesp), School of Engineering, Guaratinguetá, BrazilSao Paulo State University (Unesp), School of Engineering, Guaratinguetá, BrazilSao Paulo State University (Unesp), Institute of Chemistry, Araraquara, BrazilSao Paulo State University (Unesp), School of Engineering, Guaratinguetá, BrazilPure and calcium-modified (CaxBi1-xFeO3, x = 0.0, 0.1, 0.2, 0.30) thin films were fabricated on Pt(111)/Ti/SiO2/Si substrates by the soft chemical method using LaNiO3 as the bottom electrode. Highly (200)-oriented BFO film was coherently grown on LNO at 500 °C. Ca-doped BiFeO3 films have a dense microstructure and rounded grains. The conventional problem of the leakage current for the highest doped film was reduced from 10-5 to 10-10 with remarkable improvement in the film/electrode interface, chemical homogeneity, crystallinity, and morphology of the BFO film. Enhanced ferroelectricity was observed at room temperature due to the bottom electrode. Fatigue-free films were grown on LaNiO3 bottom electrodes with no degradation after 1×1010 switching cycles at an applied voltage of 5 V with a frequency of 1 MHz. After several tests the capacitors retained 77% of its polarization upon a retention time of 104 s. Room temperature magnetic coercive field measurements indicate that the magnetic behaviour is influenced by the nature of the bottom electrode.http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2040%2009.pdfbismuth ferritemultiferroicslanthanum nickelatethin films |
| spellingShingle | Lucas Fabricio Goncalves Leandro Silva Rosa Rocha Bruno Hangai Pedro Paulo Silva Ortega Elson Longo Alexandre Z. Simões Electrical properties of calcium doped BiFeO3 films on LaNiO3 coated Pt substrates Processing and Application of Ceramics bismuth ferrite multiferroics lanthanum nickelate thin films |
| title | Electrical properties of calcium doped BiFeO3 films on LaNiO3 coated Pt substrates |
| title_full | Electrical properties of calcium doped BiFeO3 films on LaNiO3 coated Pt substrates |
| title_fullStr | Electrical properties of calcium doped BiFeO3 films on LaNiO3 coated Pt substrates |
| title_full_unstemmed | Electrical properties of calcium doped BiFeO3 films on LaNiO3 coated Pt substrates |
| title_short | Electrical properties of calcium doped BiFeO3 films on LaNiO3 coated Pt substrates |
| title_sort | electrical properties of calcium doped bifeo3 films on lanio3 coated pt substrates |
| topic | bismuth ferrite multiferroics lanthanum nickelate thin films |
| url | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2040%2009.pdf |
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