The relationship between magnetism and magneto-optical effects in rare earth doped aluminophosphate glasses. (15th January 2016)

• Record Type: Journal Article
• Authors: Valeanu, M; Sofronie, M; Galca, A C; Tolea, F; Elisa, M; Sava, B; Boroica, L; Kuncser, V
• Is Part Of: Journal of physics. Volume 49:Number 7(2016)
• Publication Date: 2016-01-15
• Subjects: magneto-optical effects -- Verdet constant -- Faraday rotation -- magnetic susceptibility -- ellipsometry -- SQUID magnetometry; Physics -- Periodicals; 530
• DOI: 10.1088/0022-3727/49/7/075001
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: Aluminophosphate glasses from the Li2 O-BaO-Al2 O3 -P2 O5 system with the addition of nonmagnetic and paramagnetic rare earth ions, were prepared using a wet nonconventional method to process the raw materials, followed by a melting–quenching procedure. The glasses obtained were characterized with respect to their magnetic and magneto-optical properties using superconducting quantum interference device magnetometry and spectroscopic ellipsometry. The assumption of a linear dependence of the Verdet constant on the magnetic susceptibility, with a proportionality constant dependent on the type of vitreous matrix and doping ion, is critically discussed. The diamagnetic and paramagnetic contributions to the Faraday rotation were separately analyzed and specific designs for optimal active and passive elements are proposed.