Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 15, Issue 10, Pages 1621-1626Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.202000241
Keywords
ferroelectricity; dielectric switch; phase transitions; organic-inorganic hybrid; structural manipulation
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Funding
- National Natural Science Foundation of China [21661016, 21361012, 21461013]
- Science and Technology Project of Jiangxi Provincial Department of Education [GJJ160734]
- Major Science and Technology Project of Ji'An City [2019[55]]
- [201810419003]
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Both ferroelectric and switchable dielectric behaviors are of great academic value and practical significance, but they usually exist alone. If combine the two properties into one compound, it will be more valuable in practical application. In this paper, quasi-spherical (2-bromoethyl) trimethylammonium cation was used to match with [CdBr4](2-) anion, and a new organic-inorganic hybrid compound ([BrCH2CH2N(CH3)(3)](+)(2)[CdBr4](2-), BETABCdBr) was obtained and carefully characterized. The results indicate that this compound undergoes two continuous reversible phase transition around 342 K and 390 K. It could respectively exhibit ferroelectric and switchable dielectric properties over different temperature range. This work may provide a new clue to explore new types of bifunctional phase transition smart materials to meet various application requirements.
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