Physical properties and phase transitions of bis (guanidinium) zirconium bis (nitrilotriacetate) hydrate, [C(NH₂)₃]₂ Zr [N(CH₂COO)₃]₂•H₂O

Autor(en)

Eiken Haussühl, Ekkehart Tillmanns

Abstrakt

Large single crystals of optical quality of bis(guanidinium)zirconium bis(nitrilotriacetate) hydrate were grown from aq. solns. Complete elastic, thermoelastic, and piezoelastic tensors were detd. by ultrasonic methods. In addn., the tensor of thermal expansion, refractive indexes, dielec. and piezoelec. consts. were studied at 210-330 K. Most phys. properties investigated show a strong anisotropy. The piezoelec. const. d123 exceeds d111 of alpha-quartz by a factor of 25. Two higher-order phase transitions appear at about 287 K and 290 K. The intermediate phase exhibits strong anomalies of the temp. and pressure dependence of the propagation velocities of quasi-longitudinal elastic waves having a large component of the displacement vector parallel to [010].

Organisation(en)

Institut für Mineralogie und Kristallographie

Journal

Zeitschrift für Kristallographie : international journal for structural, physical, and chemical aspects of crystalline materials

Seiten

826-831

Anzahl der Seiten

6

ISSN

0044-2968

Publikationsdatum

1997

Peer-reviewed

Ja

ÖFOS 2012

103009 Festkörperphysik, 105113 Kristallographie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c93a3d72-e46b-4300-8fba-b0328a88abfe