Evidence of the pressure-induced conductivity switching of yttrium-doped srtio3
文献类型：期刊论文
| 作者 | Dai, LiDong1; Wu, Lei1; Li, HePing1; Hu, HaiYing1; Zhuang, Yukai1,2; Liu, KaiXiang1,2 |
| 刊名 | Journal of physics-condensed matter
 |
| 出版日期 | 2016-11-30 |
| 卷号 | 28期号:47页码:9 |
| 关键词 | Electrical properties Grain boundaries Phase transformation High pressure Strontium titanate |
| ISSN号 | 0953-8984 |
| DOI | 10.1088/0953-8984/28/47/475501 |
| 通讯作者 | Wu, lei(wulei@mail.gyig.ac.cn) |
| 英文摘要 | The electrical transport properties of undoped and yttrium-doped strontium titanate (sr(ti1-xyx) o3-delta, x = 0, 0.02) under high pressure were investigated with in situ impedance spectroscopy measurements. a pressure-induced conductivity switching for undoped and 2 mole% y-doped strontium titanate is observed at around similar to 10.0 and 7.0 gpa respectively, which are caused by a cubic to tetragonal i4/mcm phase transition. the decrease of the phase transition point of 2 mole% y-doped strontium titanate can be attributed to larger y3+ atoms occupying the b-site and the creation of more oxygen vacancies, which lead to octahedra tilting and symmetry breaking. the results of the voltage-bias dependence of grain-boundary impedance of undoped and 2 mole% y-doped strontium titanate at different pressures revealed that schottky-type potential barriers formed at grain boundaries are the key factor for the accumulation of oxygen vacancy at the interface under pressure. |
| WOS关键词 | PHASE-TRANSITION ; IMPEDANCE SPECTROSCOPY ; IONIC-CONDUCTIVITY ; STRONTIUM-TITANATE ; ELECTRICAL-CONDUCTIVITY ; BRILLOUIN-SCATTERING ; IMPROVEMENT ; SRZRO3 ; BAZRO3 ; MEMORY |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Condensed Matter |
| 语种 | 英语 |
| WOS记录号 | WOS:000385447100001 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2374913 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wu, Lei |
| 作者单位 | 1.Chinese Acad Sci, Key Lab High Temp & High Pressure Study Earths In, Inst Geochem, Guiyang 550081, Guizhou, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, LiDong,Wu, Lei,Li, HePing,et al. Evidence of the pressure-induced conductivity switching of yttrium-doped srtio3[J]. Journal of physics-condensed matter,2016,28(47):9. |
| APA | Dai, LiDong,Wu, Lei,Li, HePing,Hu, HaiYing,Zhuang, Yukai,&Liu, KaiXiang.(2016).Evidence of the pressure-induced conductivity switching of yttrium-doped srtio3.Journal of physics-condensed matter,28(47),9. |
| MLA | Dai, LiDong,et al."Evidence of the pressure-induced conductivity switching of yttrium-doped srtio3".Journal of physics-condensed matter 28.47(2016):9. |
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来源：中国科学院大学
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