A New Zinc Phosphate-Tellurite Glass for Magneto-Optical Applications
Mihail Elisa,
Raluca Constantina Stefan,
Ileana Cristina Vasiliu,
Stefan Marian Iordache,
Ana-Maria Iordache,
Bogdan Alexandru Sava,
Lucica Boroica,
Marius Catalin Dinca,
Ana Violeta Filip,
Aurelian Catalin Galca,
Cristina Bartha,
Nicusor Iacob,
Madalin Ion Rusu,
Mihai Eftimie,
Victor Kuncser
Affiliations
Mihail Elisa
National Institute of R & D for Optoelectronics, INOE 2000, 409 Atomistilor Str., 077125 Magurele, Jud. Ilfov, Romania
Raluca Constantina Stefan
National Institute of R & D for Optoelectronics, INOE 2000, 409 Atomistilor Str., 077125 Magurele, Jud. Ilfov, Romania
Ileana Cristina Vasiliu
National Institute of R & D for Optoelectronics, INOE 2000, 409 Atomistilor Str., 077125 Magurele, Jud. Ilfov, Romania
Stefan Marian Iordache
National Institute of R & D for Optoelectronics, INOE 2000, 409 Atomistilor Str., 077125 Magurele, Jud. Ilfov, Romania
Ana-Maria Iordache
National Institute of R & D for Optoelectronics, INOE 2000, 409 Atomistilor Str., 077125 Magurele, Jud. Ilfov, Romania
Bogdan Alexandru Sava
National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Str, 077125 Magurele, Jud. Ilfov, Romania
Lucica Boroica
National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Str, 077125 Magurele, Jud. Ilfov, Romania
Marius Catalin Dinca
National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Str, 077125 Magurele, Jud. Ilfov, Romania
Ana Violeta Filip
National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Str, 077125 Magurele, Jud. Ilfov, Romania
Aurelian Catalin Galca
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Jud. Ilfov, Romania
Cristina Bartha
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Jud. Ilfov, Romania
Nicusor Iacob
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Jud. Ilfov, Romania
Madalin Ion Rusu
National Institute of R & D for Optoelectronics, INOE 2000, 409 Atomistilor Str., 077125 Magurele, Jud. Ilfov, Romania
Mihai Eftimie
Department Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 313 Spl. Independentei, 060042 Bucharest, Romania
Victor Kuncser
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Jud. Ilfov, Romania
This work investigates the structural, magnetic and magneto-optical properties of a new zinc phosphate-tellurite glass belonging to the 45ZnO-10Al2O3-40P2O5-5TeO2 system. The glass was prepared by a wet method of processing the starting reagents followed by suitable melting–stirring–quenching–annealing steps. Specific parameters such as density, average molecular mass, molar volume, oxygen packaging density, refractive index, molar refractivity, electronic polarizability, reflection loss, optical transmission, band gap and optical basicity have been reported together with thermal, magnetic and magneto-optical characteristics. Absorption bands appear in the blue and red visible region, while over 600 nm the glass becomes more transparent. FTIR and Raman spectra evidenced phosphate-tellurite vibration modes proving the P2O5 and TeO2 network forming role. Magnetic measurements reveal the diamagnetic character of the Te-doped glass with an additional weak ferromagnetic signal, specific to diluted ferromagnetic oxides. Positive Faraday rotation angle with monotonous decreasing value at increasing wavelength was evidenced from magneto-optical measurements. The final product is a composite material comprising of a non-crystalline vitreous phase and Te-based nanoclusters accompanied by oxygen vacancies. The metallic-like Te colloids are responsible for the dark reddish color of the glass whereas the accompanying oxygen vacancies might be responsible for the weak ferromagnetic signal persisting up to room temperature.