Enhanced Ferromagnetism Induced by Chemical Doping and Epitaxial Strain in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> Films
The perovskite LaCoO<sub>3</sub> and La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> thin films were synthesized successfully by a polymer-assisted deposition method. The structural characterization and thermal decomposition measurements indicate that...
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MDPI AG
2023-04-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/4/623 |
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| author | Changzheng Xie Zhijie Chen Xinghua Wang Ying Meng Yihao Wang |
| author_facet | Changzheng Xie Zhijie Chen Xinghua Wang Ying Meng Yihao Wang |
| author_sort | Changzheng Xie |
| collection | DOAJ |
| description | The perovskite LaCoO<sub>3</sub> and La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> thin films were synthesized successfully by a polymer-assisted deposition method. The structural characterization and thermal decomposition measurements indicate that appropriately increasing the annealing temperature is helpful in improving the film crystallinity. Compared with LaCoO<sub>3</sub> films, the Curie temperature is enhanced to a higher temperature in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> films, which is attributed to the changes in both the valence state and spin state induced by the chemical doping. In addition, a broad transition temperature region is observed in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> films, revealing the existence of inhomogeneous ground states in this system. |
| first_indexed | 2024-03-11T05:07:01Z |
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| language | English |
| last_indexed | 2024-03-11T05:07:01Z |
| publishDate | 2023-04-01 |
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| series | Crystals |
| spelling | doaj.art-7580b4998d394bb1b5cc939a69c8841c2023-11-17T18:51:10ZengMDPI AGCrystals2073-43522023-04-0113462310.3390/cryst13040623Enhanced Ferromagnetism Induced by Chemical Doping and Epitaxial Strain in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> FilmsChangzheng Xie0Zhijie Chen1Xinghua Wang2Ying Meng3Yihao Wang4Universities Joint Key Laboratory of Photoelectric Detection Science and Technology in Anhui Province, School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, ChinaUniversities Joint Key Laboratory of Photoelectric Detection Science and Technology in Anhui Province, School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, ChinaUniversities Joint Key Laboratory of Photoelectric Detection Science and Technology in Anhui Province, School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, ChinaUniversities Joint Key Laboratory of Photoelectric Detection Science and Technology in Anhui Province, School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, ChinaAnhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei 230031, ChinaThe perovskite LaCoO<sub>3</sub> and La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> thin films were synthesized successfully by a polymer-assisted deposition method. The structural characterization and thermal decomposition measurements indicate that appropriately increasing the annealing temperature is helpful in improving the film crystallinity. Compared with LaCoO<sub>3</sub> films, the Curie temperature is enhanced to a higher temperature in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> films, which is attributed to the changes in both the valence state and spin state induced by the chemical doping. In addition, a broad transition temperature region is observed in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> films, revealing the existence of inhomogeneous ground states in this system.https://www.mdpi.com/2073-4352/13/4/623ferromagnetic perovskitechemical dopingspin-state transitionlattice relaxation |
| spellingShingle | Changzheng Xie Zhijie Chen Xinghua Wang Ying Meng Yihao Wang Enhanced Ferromagnetism Induced by Chemical Doping and Epitaxial Strain in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> Films Crystals ferromagnetic perovskite chemical doping spin-state transition lattice relaxation |
| title | Enhanced Ferromagnetism Induced by Chemical Doping and Epitaxial Strain in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> Films |
| title_full | Enhanced Ferromagnetism Induced by Chemical Doping and Epitaxial Strain in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> Films |
| title_fullStr | Enhanced Ferromagnetism Induced by Chemical Doping and Epitaxial Strain in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> Films |
| title_full_unstemmed | Enhanced Ferromagnetism Induced by Chemical Doping and Epitaxial Strain in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> Films |
| title_short | Enhanced Ferromagnetism Induced by Chemical Doping and Epitaxial Strain in La<sub>0.8</sub>Sr<sub>0.2</sub>CoO<sub>3</sub> Films |
| title_sort | enhanced ferromagnetism induced by chemical doping and epitaxial strain in la sub 0 8 sub sr sub 0 2 sub coo sub 3 sub films |
| topic | ferromagnetic perovskite chemical doping spin-state transition lattice relaxation |
| url | https://www.mdpi.com/2073-4352/13/4/623 |
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