Joule self-heating effects and controlling oxygen vacancy in La0.8Ba0.2MnO3 ultrathin films with nano-sized labyrinth morphology
文献类型：期刊论文
| 作者 | Lin, Guankai2; Wang, Haoru2; Cai, Xuhui2; Tong, Wei1 ; Zhu, Hong2,3
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| 刊名 | AIP ADVANCES
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 10 |
| DOI | 10.1063/5.0009801 |
| 通讯作者 | Zhu, Hong(zhuh@ustc.edu.cn) |
| 英文摘要 | Electric current induced Joule heating effects have been investigated in La0.8Ba0.2MnO3 ultrathin films deposited on a LaAlO3(001) single crystal substrate with a smaller lattice constant by using the sol-gel method. By applying moderate bias currents (similar to 10 mA), it is found that Joule self-heating simply gives rise to a temperature deviation between the thermostat and the test sample, but the intrinsic rho (T) relationship measured at a low current (0.1 mA) changes a little. However, it is noteworthy that the low-temperature transport behavior degrades from the metallic to the insulating state after applying higher bias currents (>31 mA) in vacuum. Furthermore, the metallic transport can be recovered by placing the degraded film in air. The results clearly suggest that the oxygen vacancy in the La0.8Ba0.2MnO3 films is controllable in different atmospheres, particularly with the aid of the Joule self-heating. According to the SEM images, we attribute the controlled oxygen vacancy to the nano-sized labyrinth pattern of the films, where the large surface-to-volume ratio plays a crucial role. |
| WOS关键词 | ELECTRORESISTANCE ; TRANSPORT |
| 资助项目 | National Natural Science Foundation of China[11474262] ; National Natural Science Foundation of China[11674298] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000532377200001 |
| 出版者 | AMER INST PHYSICS |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103257]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhu, Hong |
| 作者单位 | 1.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Field Magnet Lab, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Key Lab Strongly Coupled Quantum Matter Phys, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Guankai,Wang, Haoru,Cai, Xuhui,et al. Joule self-heating effects and controlling oxygen vacancy in La0.8Ba0.2MnO3 ultrathin films with nano-sized labyrinth morphology[J]. AIP ADVANCES,2020,10. |
| APA | Lin, Guankai,Wang, Haoru,Cai, Xuhui,Tong, Wei,&Zhu, Hong.(2020).Joule self-heating effects and controlling oxygen vacancy in La0.8Ba0.2MnO3 ultrathin films with nano-sized labyrinth morphology.AIP ADVANCES,10. |
| MLA | Lin, Guankai,et al."Joule self-heating effects and controlling oxygen vacancy in La0.8Ba0.2MnO3 ultrathin films with nano-sized labyrinth morphology".AIP ADVANCES 10(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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