Physical properties of potassium erbium double tungstate KEr(WO4)2

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

doi:10.1117/12.518763

22 October 2003 Physical properties of potassium erbium double tungstate KEr(WO₄)₂

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

Author Affiliations +

Proceedings Volume 5136, Solid State Crystals 2002: Crystalline Materials for Optoelectronics; (2003) https://doi.org/10.1117/12.518763
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

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.

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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, and Henryk Szymczak "Physical properties of potassium erbium double tungstate KEr(WO₄)₂", Proc. SPIE 5136, Solid State Crystals 2002: Crystalline Materials for Optoelectronics, (22 October 2003); https://doi.org/10.1117/12.518763

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