Bridging the Gap between Bulk Compression and Indentation Test on Room-Temperature Plasticity in Oxides: Case Study on SrTiO<sub>3</sub>
Dislocation-based functionalities in inorganic ceramics and semiconductors are drawing increasing attention, contrasting the conventional belief that the majority of ceramic materials are brittle at room temperature. Understanding the dislocation behavior in ceramics and advanced semiconducting mate...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/10/10/933 |
| _version_ | 1827704363455348736 |
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| author | Xufei Fang Lukas Porz Kuan Ding Atsutomo Nakamura |
| author_facet | Xufei Fang Lukas Porz Kuan Ding Atsutomo Nakamura |
| author_sort | Xufei Fang |
| collection | DOAJ |
| description | Dislocation-based functionalities in inorganic ceramics and semiconductors are drawing increasing attention, contrasting the conventional belief that the majority of ceramic materials are brittle at room temperature. Understanding the dislocation behavior in ceramics and advanced semiconducting materials is therefore critical for the mechanical reliability of such materials and devices designed for harvesting the dislocation-based functionalities. Here we compare the mechanical testing between indentation at nano-/microscale and bulk uniaxial deformation at macroscale and highlight the dislocation plasticity in single crystal SrTiO<sub>3</sub>, a model perovskite. The similarities and differences as well as the advantages and limitations of both testing protocols are discussed based on the experimental outcome of the crystal plasticity, with a focus on the pre-existing defect population being probed with different volumes across the length scales (“size effect”). We expect this work to pave the road for studying dislocation-based plasticity in various advanced functional ceramics and semiconductors. |
| first_indexed | 2024-03-10T15:38:40Z |
| format | Article |
| id | doaj.art-88224ee377a74ce79a67fb5beaafe94d |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T15:38:40Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-88224ee377a74ce79a67fb5beaafe94d2023-11-20T17:00:37ZengMDPI AGCrystals2073-43522020-10-01101093310.3390/cryst10100933Bridging the Gap between Bulk Compression and Indentation Test on Room-Temperature Plasticity in Oxides: Case Study on SrTiO<sub>3</sub>Xufei Fang0Lukas Porz1Kuan Ding2Atsutomo Nakamura3Department of Materials and Earth Sciences, Technical University of Darmstadt, 64287 Darmstadt, GermanyDepartment of Materials and Earth Sciences, Technical University of Darmstadt, 64287 Darmstadt, GermanyDepartment of Materials and Earth Sciences, Technical University of Darmstadt, 64287 Darmstadt, GermanyDepartment of Materials Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, JapanDislocation-based functionalities in inorganic ceramics and semiconductors are drawing increasing attention, contrasting the conventional belief that the majority of ceramic materials are brittle at room temperature. Understanding the dislocation behavior in ceramics and advanced semiconducting materials is therefore critical for the mechanical reliability of such materials and devices designed for harvesting the dislocation-based functionalities. Here we compare the mechanical testing between indentation at nano-/microscale and bulk uniaxial deformation at macroscale and highlight the dislocation plasticity in single crystal SrTiO<sub>3</sub>, a model perovskite. The similarities and differences as well as the advantages and limitations of both testing protocols are discussed based on the experimental outcome of the crystal plasticity, with a focus on the pre-existing defect population being probed with different volumes across the length scales (“size effect”). We expect this work to pave the road for studying dislocation-based plasticity in various advanced functional ceramics and semiconductors.https://www.mdpi.com/2073-4352/10/10/933dislocation plasticityceramicsSrTiO<sub>3</sub>nanoindentationbulk deformation |
| spellingShingle | Xufei Fang Lukas Porz Kuan Ding Atsutomo Nakamura Bridging the Gap between Bulk Compression and Indentation Test on Room-Temperature Plasticity in Oxides: Case Study on SrTiO<sub>3</sub> Crystals dislocation plasticity ceramics SrTiO<sub>3</sub> nanoindentation bulk deformation |
| title | Bridging the Gap between Bulk Compression and Indentation Test on Room-Temperature Plasticity in Oxides: Case Study on SrTiO<sub>3</sub> |
| title_full | Bridging the Gap between Bulk Compression and Indentation Test on Room-Temperature Plasticity in Oxides: Case Study on SrTiO<sub>3</sub> |
| title_fullStr | Bridging the Gap between Bulk Compression and Indentation Test on Room-Temperature Plasticity in Oxides: Case Study on SrTiO<sub>3</sub> |
| title_full_unstemmed | Bridging the Gap between Bulk Compression and Indentation Test on Room-Temperature Plasticity in Oxides: Case Study on SrTiO<sub>3</sub> |
| title_short | Bridging the Gap between Bulk Compression and Indentation Test on Room-Temperature Plasticity in Oxides: Case Study on SrTiO<sub>3</sub> |
| title_sort | bridging the gap between bulk compression and indentation test on room temperature plasticity in oxides case study on srtio sub 3 sub |
| topic | dislocation plasticity ceramics SrTiO<sub>3</sub> nanoindentation bulk deformation |
| url | https://www.mdpi.com/2073-4352/10/10/933 |
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