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Haussühl E, Haussühl S, Tillmanns E. Elastic, thermoelastic and piezoelectric properties of 11 new bis(alkylammonium) and bis(polyalkylammonium) zirconium bis(nitrilotriacetates). Z KRIST-CRYST MATER 2015. [DOI: 10.1515/zkri-2015-1850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Single crystals with dimensions up to 20 × 20 × 20 mm3 of 11 new bis(alkylammonium) zirconium bis(nitrilotriacetates) have been grown from aqueous solutions. Their elastic and thermoelastic properties were derived from ultrasonic resonant frequencies of plane-parallel plates and their shift upon variation of temperature, respectively. All of these crystal species belong to the monoclinic or orthorhombic crystal systems. The majority possesses an acentric crystal structure giving rise to piezoelectric effects, which surmount the maximum longitudinal piezoelectric effect d
111 of α-quartz by a factor of two. The pyroelectric effect of two of these specimens is about three to four times larger than
π
3
σ
$\pi _3^\sigma $
of tourmaline. In addition, the tensors of thermal expansion were determined. Owing to the dominating large size of the anion most physical properties of the salts with different cations behave quite similar. Branched or more globular alkylammonium cations generate a slightly larger mean elastic stiffness than unbranched cations.
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Affiliation(s)
- Eiken Haussühl
- Institut für Geowissenschaften, Abteilung Kristallographie, Goethe-Universität Frankfurt, Altenhöferallee 1, D-60438, Germany
| | | | - Ekkehart Tillmanns
- Universität Wien, Institut für Mineralogie und Kristallographie, Althanstr. 14, A-1090 Wien, Austria
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Lu Z, Cheng L, Li J, Zhang K, Yi S, Qin J. Synthesis and structural characterization of novel, fluorinated poly(phthalazinone ether)s containing perfluorophenylene moieties. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.11054] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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