Growth of {Tb₃}[Sc_2−xLu_x](Al₃)O₁₂ Single Crystals for Visible-Infrared Optical Isolators

Abstract

3 }[Sc 2-x Lu x ](Al 3 )O 12 crystals have been grown and investigated for the first time for magneto-optical applications. Tb 3 Al 5 O 12 exhibits the best magneto-optical features; however, its incongruent melting nature has led to the industrial use of Tb 3 Ga 5 O 12 . Tb 3 Sc 2 Al 3 O 12 had been proposed as an alternative to Tb 3 Al 5 O 12 , but unfortunately its growth also presents several drawbacks. The present investigation shows that by the isovalent substitution of Sc 3þ by Lu 3þ in the octahedral site of the garnet structure, it is possible to improve the growth characteristics while preserving the superior magneto-optical properties. We demonstrate that {Tb 3 }[Sc 2-x Lu x ](Al 3 )O 12 crystals show a higher visible transparency and a larger Faraday rotation than Tb 3 Ga 5 O 12 crystals. {Tb 3 }[Sc 2-x Lu x ](Al 3 )O 12 is therefore a very promising material in particular for new magneto-optical applications in the visible-near IR wavelength region.

Czochralski Growth, Magnetic Properties and Faraday Characteristics of CeAlO3 Crystals

“…Paramagnetic magneto-optical materials containing rare earth ions (such as Tb 3+ , Eu 2+ and Ce 3+ ) are suitable for use in this band, although their Verdet constants are smaller than those of doped YIG. As is known, crystals [3][4][5][6], glasses [7][8][9] and ceramics [10,11] containing Tb 3+ ions have been extensively investigated as Faraday rotator materials due to its good magneto-optic effect in the visible and near-infrared bands and relatively easy preparation process. However, at the present, the crystals containing Ce 3+ ions have drawn people's attention [12][13][14][15].…”

Thermal, spectroscopic, and laser characterization of Nd:LuxY1-xVO4 series crystals

“…As we expected that the substitution of some Y 3+ by smaller Lu 3+ will decrease the cell parameters and therefore result in the bigger reflection angles, the XRPD results show that the diffraction peaks of the Nd:Lu x Y 1-x VO 4 mixed crystals shift slightly towards bigger 2θ angles when the parameter x tends to 1.00 gradually. 25 We can see from of LuVO 4 single crystal, shifting slightly towards bigger 2θ angles compared with those of YVO 4 single crystal.…”

Preparation of (Tb0.8Y0.2)3Al5O12 transparent ceramic as novel magneto-optical isolator material

“…or Al 3+ ions [6,7] and stabilize the garnet phase. Other scholars have developed new synthesis methods, such as the hybrid floating zone method [8] .…”