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Sol–gel synthesis of doped Cu2V2O7 fine particles showing giant negative thermal expansion
- Source :
- AIP Advances, Vol 10, Iss 7, Pp 075207-075207-6 (2020)
- Publication Year :
- 2020
- Publisher :
- AIP Publishing, 2020.
-
Abstract
- We report the sol–gel synthesis of Cu2V2O7 fine particles, in which some of the constituent Cu is replaced with other elements. The sintered body of Zn substituted β-Cu1.8Zn0.2V2O7 shows a large negative thermal expansion (NTE) over a wide temperature range due to microstructural effects peculiar to a ceramic body. Using the sol–gel method, we successfully produced β-Cu1.8Zn0.2V2O7 ceramic fine particles that retain the same level of thermal expansion suppression capabilities as the bulk with a size of about 1 μm. We also succeeded in performing rare earth metal (Ce, Sm, Yb) substitutions, which might be a clue for improving NTE performance. These achievements provide particulate filler for thermal expansion control of a micrometer region, which has been earnestly sought in many fields of technology.
- Subjects :
- 010302 applied physics
Materials science
Doping
General Physics and Astronomy
02 engineering and technology
Atmospheric temperature range
021001 nanoscience & nanotechnology
01 natural sciences
lcsh:QC1-999
Thermal expansion
Micrometre
Metal
Negative thermal expansion
Chemical engineering
visual_art
0103 physical sciences
visual_art.visual_art_medium
Ceramic
0210 nano-technology
lcsh:Physics
Sol-gel
Subjects
Details
- ISSN :
- 21583226
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- AIP Advances
- Accession number :
- edsair.doi.dedup.....3f7c859ee225f59a728a6bbce0dd0f94