Three-Step Ferroelastic Transitions from Hexagonal to Triclinic Phases in a Hybrid Perovskite : (1-Fluoromethyl-1-methylpyrrolidine)[CdCl3
Hybrid ferroelastic crystals have emerged as a hot research topic in recent years owing to their prospective applications in piezoelectric sensors, mechanical switches, and optoelectronic devices. Nevertheless, most of the documented materials exhibit one-step or two-step ferroelastic phase transition(s), and those with multistep ferroelastic transitions are extremely scarce. We present a new hexagonal molecular perovskite based on a fluoro-substituted flexible cyclic ammonium cation, (1-fluoromethyl-1-methylpyrrolidine)[CdCl3] (1), undergoing unusual three-step ferroelastic phase transitions from hexagonal paraelastic phase to orthorhombic, monoclinic, and triclinic ferroelastic phases at 388, 376, and 311 K, respectively, with Aizu notation of 6/mmmFmmm, mmmF2/m, and 2/mF-1, featuring spontaneous strain of 0.002, 0.023, and 0.110, respectively. Furthermore, variable-temperature single-crystal diffraction reveals that the phase-transition mechanism in 1 principally originates from intriguing dynamic change of organic cations and synchronous displacement of inorganic chains. This scarce instance of multistep hybrid ferroelastic provides important clues for finding advanced ferroelastic materials.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:63 |
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| Enthalten in: |
Inorganic chemistry - 63(2024), 17 vom: 29. Apr., Seite 7966-7972 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Chen, Shuai [VerfasserIn] |
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| Anmerkungen: |
Date Revised 29.04.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acs.inorgchem.4c00986 |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM371093724 |
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| 245 | 1 | 0 | |a Three-Step Ferroelastic Transitions from Hexagonal to Triclinic Phases in a Hybrid Perovskite |b (1-Fluoromethyl-1-methylpyrrolidine)[CdCl3 |
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| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Hybrid ferroelastic crystals have emerged as a hot research topic in recent years owing to their prospective applications in piezoelectric sensors, mechanical switches, and optoelectronic devices. Nevertheless, most of the documented materials exhibit one-step or two-step ferroelastic phase transition(s), and those with multistep ferroelastic transitions are extremely scarce. We present a new hexagonal molecular perovskite based on a fluoro-substituted flexible cyclic ammonium cation, (1-fluoromethyl-1-methylpyrrolidine)[CdCl3] (1), undergoing unusual three-step ferroelastic phase transitions from hexagonal paraelastic phase to orthorhombic, monoclinic, and triclinic ferroelastic phases at 388, 376, and 311 K, respectively, with Aizu notation of 6/mmmFmmm, mmmF2/m, and 2/mF-1, featuring spontaneous strain of 0.002, 0.023, and 0.110, respectively. Furthermore, variable-temperature single-crystal diffraction reveals that the phase-transition mechanism in 1 principally originates from intriguing dynamic change of organic cations and synchronous displacement of inorganic chains. This scarce instance of multistep hybrid ferroelastic provides important clues for finding advanced ferroelastic materials | ||
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| 700 | 1 | |a Han, Ding-Chong |e verfasserin |4 aut | |
| 700 | 1 | |a Ye, Le |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Wei-Xiong |e verfasserin |4 aut | |
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