Universität zu Köln

Bohaty, Ladislav, Bayarjargal, Lkhamsuren, Andersen, Lionel, Held, Peter and Becker, Petra (2020). Triclinic Pedial Sarcosinium Hydrogen L(+)-Tartrate-Crystal Growth, Pyroelectricity, Thermal Expansion, and Linear Optical Properties. Cryst. Res. Technol., 55 (2). WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1521-4079

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Abstract

Single crystals of optical quality and dimensions up to 25 x 25 x 40 mm(3) of sarcosinium hydrogen L(+)-tartrate and up to 15 x 20 x 30 mm(3) of sarcosinium hydrogen D(-)-tartrate are grown from aqueous solution during growth periods of 10-14 weeks. For sarcosinium hydrogen L(+)-tartrate refractive indices and their dispersion in the wavelength range 365-1083 nm are determined. The biaxial positive crystals show marked optical anisotropy with maximum birefringence at 365 nm of Delta n = 0.089 and only small orientation dispersion of the principal axes of the optical indicatrix. Based on the linear optical data, phase matching conditions for collinear second harmonic generation (SHG) are analyzed. The optical properties allow SHG phase matching for both, type I and type II processes. Temperature-dependent coefficients of the tensor of thermal expansion [alpha(ij)] between 145 and 300 K show pronounced anisotropy and moderate orientation dispersion of thermal expansion, with principal values at 293 K of alpha(0)(11) = -3.3(1) x 10(-6) K-1, alpha(0)(22) = 35.7(1) x 10(-6) K-1, and alpha(0)(33) = 66.6(1) x 10-6 K-1. The absolute value of the pyroelectric vector vertical bar p(sigma)vertical bar of sarcosinium hydrogen L(+)-tartrate amounts to about 20 mu C K-1 m(-2) and varies only slightly with temperature in the temperature range 100-320 K.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bohaty, Ladislav UNSPECIFIED UNSPECIFIED UNSPECIFIED Bayarjargal, Lkhamsuren UNSPECIFIED UNSPECIFIED UNSPECIFIED Andersen, Lionel UNSPECIFIED UNSPECIFIED UNSPECIFIED Held, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Becker, Petra UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-346223
DOI:	10.1002/crat.201900040
Journal or Publication Title:	Cryst. Res. Technol.
Volume:	55
Number:	2
Date:	2020
Publisher:	WILEY-V C H VERLAG GMBH
Place of Publication:	WEINHEIM
ISSN:	1521-4079
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CRYSTAL-STRUCTURE Multiple languages Crystallography Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/34622