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Eiken Haussühl, Siegfried Haussühl, Ekkehart Tillmanns

Crystal growth, pyroelectric, piezoelectric, and elastic properties of monoclinic bis (nitrilotriacetato) zirconates X[C(NH₂)₃] Zr(N(CH₂COO)₃)₂ × yH₂O (y=2 for X

Large single crystals of optical quality and di-mensions up to 50 mm of double salts of the type X[C(NH₂)₃] Zr(N(CH₂COO)₃)₂ × y H₂O (X= Rb, Tl, NH₄, Cs, CH₃NH₃) have been grown from aqueous solutions. They crystallize in the space group P2₁ and exhibit quasi-isotypic structures. Complete elastic and thermoelastic tensors have been derived from ultrasonic resonances of plane-parallel plates. In addition, thermal expansion, py-roelectric, dielectric and piezoelectric properties have been measured. The maximum longitudinal piezoelectric effects d₂₂₂ exceed d₁₁₁ of α-quartz roughly by a factor of 7. The pyroelectric constants π₂ surmount π₃ of tourmaline by about a factor of 9. The structural and physical properties are closely related to those of the constituent salts.

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Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0044-2968
Volume: 216, 10/2001
Pages: 534

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