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SM ISO690:2012 BOROICA, Lucica, SAVA, Bogdan Alexandru, ELIŞA, Mihail, VALEANU, M., KUNCSER, Victor Eugen, SOFRONIE, M., SHIKIMAKA, Olga A., GRABCO, Daria. Magneto-optical and mechanical properties of rare-earth doped phosphate glasses. In: Materials Science and Condensed Matter Physics, Ed. 7, 16-19 septembrie 2014, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2014, Editia 7, p. 88. |
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Materials Science and Condensed Matter Physics Editia 7, 2014 |
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Conferința "Materials Science and Condensed Matter Physics" 7, Chișinău, Moldova, 16-19 septembrie 2014 | |
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Pag. 88-88 | |
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Un-doped and rare-eaiih Doped phosphate glasses with molai· composition (mol. %) 56,66LiPO3 28,33Al(PO3)3 l0Ba(PO3)2 2La2O3 3 RE2O3 (RE= Dy, Tb), 56 LiPO3 28 Al(PO3)3 l0Ba(PO3)2 6RE2O3 (RE= Dy, Tb) and 58LiPO3 29Al(PO3)3 l0Ba(PO3)2 3La2O3 were prepared by a wet route ofraw materials processing, followed by melt-quenching of the batch [1-2]. Magneto-optical effects were studied in conelation with magnetic prope1iies and local electronic configurations of the doping element. The magnetic state of the doped glasses was investigated by SQUID magnetometi·y perfo1med over a large range of temperature and applied field. The Faraday rotation angle and Verdet constant were measured using a modified Ken equipment and by elipsometiy. Magnetization in dependency on temperature and magnetic field revealed the dia- or pai·ainagnetic behavior of the glass sainples, depending on the glass composition. The Verdet constant for La, Dy and Tb-doped samples in dependency on wavelength is presented in the figure bellow. This constant was calculated based on me The Verdet constant is positive for La and Tb-La glass, showing diainagnetic behavior and negative for the Dy samples, having parainagnetic properties. For all the samples the value of the constant decreases with wavelength and it is about -0.08 min/Oe/cm at 350 nm in the case of the glass with higher Dy2O3 content (6 % mol.). The mechanical characterization of the investigated glasses was perfo1med using nanoindentation technique [3] and atomic force microscopy (AFM). |
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