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Proceedings Paper

Physical properties of potassium erbium double tungstate KEr(WO4)2
Author(s): Tatiana Zayarniuk; Mieczyslaw Tadeusz Borowiec; V. P. Dyakonov; K. Wozniak; L. Dobrzycki; I. Krynetski; Edward Michalski; A. Szewczyk; A. Jedrzejczak; Alexsandr V. Prochorov; E. E. Zubov; Yu. Bukhantsev; B. Kundys; Henryk Szymczak
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Paper Abstract

The paper presents the results of complex investigations of the potassium-erbium double tungstate. The following properties have been measured: specific heat, specific heat in magnetic field, thermal expansion, thermal expansion in magnetic field, magnetization and X-ray structural data, reflectance and optical absorption spectra. The experiments were performed in the broad temperature range from 0.4 K to 300 K, spectral range from 4000 cm-1 to 40000 cm-1 and magnetic field up to 10T. The magnetic phase transition was found at temperature T=0.84K. In thermal expansion experiment the strong anomaly was found at T=7.6 K in magnetic field 10T. The KEr(WO4)2 belongs to the optical class of biaxial and pleochroic (trichroic) crystals. Using spectroscopy methods, the orientation of optical axes and refractive indices have been found. The main optical absorption spectra have been measured. The temperature dependence of optical absorption was determined.

Paper Details

Date Published: 22 October 2003
PDF: 6 pages
Proc. SPIE 5136, Solid State Crystals 2002: Crystalline Materials for Optoelectronics, (22 October 2003); doi: 10.1117/12.518763
Show Author Affiliations
Tatiana Zayarniuk, Institute of Physics (Poland)
Mieczyslaw Tadeusz Borowiec, Institute of Physics (Poland)
V. P. Dyakonov, Institute of Physics (Poland)
A.A. Galkin Donetsk Physico-Technical Institute (Ukraine)
K. Wozniak, Warsaw Univ. (Poland)
L. Dobrzycki, Warsaw Univ. (Poland)
I. Krynetski, Moscow State Univ. (Russia)
Edward Michalski, Military Univ. of Technology (Poland)
A. Szewczyk, Institute of Physics (Poland)
A. Jedrzejczak, Institute of Physics (Poland)
Alexsandr V. Prochorov, A.A. Galkin Donetsk Physico-Technical Institute (Russia)
E. E. Zubov, A.A. Galkin Donetsk Physico-Technical Institute (Ukraine)
Yu. Bukhantsev, Institute of Physics (Poland)
B. Kundys, Institute of Physics (Poland)
Henryk Szymczak, Institute of Physics (Poland)

Published in SPIE Proceedings Vol. 5136:
Solid State Crystals 2002: Crystalline Materials for Optoelectronics
Jaroslaw Rutkowski; Antoni Rogalski, Editor(s)

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