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- Publisher Website: 10.1016/j.rinp.2017.11.015
- Scopus: eid_2-s2.0-85040781376
- WOS: WOS:000428027700030
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Article: Temperature-dependent electron paramagnetic resonance detect oxygen vacancy defects and Cr valence of tetragonal Ba(Ti1− x Crx )O3 ceramics
Title | Temperature-dependent electron paramagnetic resonance detect oxygen vacancy defects and Cr valence of tetragonal Ba(Ti<inf>1−</inf><inf>x</inf>Cr<inf>x</inf>)O<inf>3</inf> ceramics |
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Authors | |
Keywords | Ceramics Defects Dielectrics Structural |
Issue Date | 2018 |
Citation | Results in Physics, 2018, v. 8, p. 190-193 How to Cite? |
Abstract | Temperature-dependent electron paramagnetic resonance (EPR) study was employed to detect oxygen vacancy defects in the tetragonal Ba(Ti1−xCrx)O3 (x = 5%) ceramic for the first time. In the rhombohedral phase below −150 °C, an EPR signal at g = 1.955 appeared in the insulating Ba(Ti1−xCrx)O3 (x = 5%) ceramic with an electrical resistivity of 108 Ω cm and was assigned to ionized oxygen vacancy defects. Ba(Ti1−xCrx)O3 ceramics exhibited a tetragonal structure except Ba(Ti1−xCrx)O3 (x = 10%) with a tetragonal-hexagonal mixed phase and a first-order phase transition dielectric behavior (ε′m > 11,000). Mixed valence Cr ions could coexist in ceramics, form CrTi′–VO[rad][rad] or CrTi[rad]–TiTi′ defect complexes and make no contribution to a dielectric peak shift towards low temperature. |
Persistent Identifier | http://hdl.handle.net/10722/335818 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Han, Dan Dan | - |
dc.contributor.author | Lu, Da Yong | - |
dc.contributor.author | Meng, Fan Ling | - |
dc.contributor.author | Yu, Xin Yu | - |
dc.date.accessioned | 2023-12-28T08:48:58Z | - |
dc.date.available | 2023-12-28T08:48:58Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Results in Physics, 2018, v. 8, p. 190-193 | - |
dc.identifier.uri | http://hdl.handle.net/10722/335818 | - |
dc.description.abstract | Temperature-dependent electron paramagnetic resonance (EPR) study was employed to detect oxygen vacancy defects in the tetragonal Ba(Ti1−xCrx)O3 (x = 5%) ceramic for the first time. In the rhombohedral phase below −150 °C, an EPR signal at g = 1.955 appeared in the insulating Ba(Ti1−xCrx)O3 (x = 5%) ceramic with an electrical resistivity of 108 Ω cm and was assigned to ionized oxygen vacancy defects. Ba(Ti1−xCrx)O3 ceramics exhibited a tetragonal structure except Ba(Ti1−xCrx)O3 (x = 10%) with a tetragonal-hexagonal mixed phase and a first-order phase transition dielectric behavior (ε′m > 11,000). Mixed valence Cr ions could coexist in ceramics, form CrTi′–VO[rad][rad] or CrTi[rad]–TiTi′ defect complexes and make no contribution to a dielectric peak shift towards low temperature. | - |
dc.language | eng | - |
dc.relation.ispartof | Results in Physics | - |
dc.subject | Ceramics | - |
dc.subject | Defects | - |
dc.subject | Dielectrics | - |
dc.subject | Structural | - |
dc.title | Temperature-dependent electron paramagnetic resonance detect oxygen vacancy defects and Cr valence of tetragonal Ba(Ti<inf>1−</inf><inf>x</inf>Cr<inf>x</inf>)O<inf>3</inf> ceramics | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.rinp.2017.11.015 | - |
dc.identifier.scopus | eid_2-s2.0-85040781376 | - |
dc.identifier.volume | 8 | - |
dc.identifier.spage | 190 | - |
dc.identifier.epage | 193 | - |
dc.identifier.eissn | 2211-3797 | - |
dc.identifier.isi | WOS:000428027700030 | - |