Premium
Pyroelectric, dielectric, piezoelectric and electrooptic properties of monoclinic nitrilotriacetic acid N(CH 2 COOH) 3 and orthorhombic X 2 Zr[N(CH 2 COO) 3 ] 2 · 2 H 2 O (X = K, Rb, Cs)
Author(s) -
Richter U.,
Haussühl S.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170220417
Subject(s) - orthorhombic crystal system , monoclinic crystal system , pyroelectricity , crystallography , dielectric , piezoelectricity , analytical chemistry (journal) , materials science , chemistry , crystal structure , ferroelectricity , optoelectronics , chromatography , composite material
Large single crystals of monoclinic nitrilotriacetic acid, N(CH 2 COOH) 3 , NTA, and of orthorhombic isotypic X 2 Zr[N(CH 2 COO) 3 ] 2 · 2 H 2 O (X = K, Rb, Cs) have been grown from aqueous solutions. They possess optical quality and have dimensions up to 10 mm and larger. The complete dielectric, piezoelectric and electrooptic tensors have been determined. The maximum longitudinal and transversal piezoelectric effects exceed those of α‐quartz by roughly a factor 11. The pyroelectric effects in NTA and in the X 2 Zr‐salts (X = K, Rb, Cs) are by about a factor 3 larger than that in tourmaline, whereas the maximum electrooptic effects amount only to about half of that in KH 2 PO 4 . Qualitative measurements of the nonlinear optical properties by the aid of a SHG powder test and on single crystals revealed effects comparable with those observed in LiIO 3 . Phase matching is possible in these compounds. Replacing X by NH 4 or Tl also acentric crystals are obtained with strong polar properties.