“…The absorption spectrum of as-grown PSO crystal was tested by using a Lambda900 UV-Vis-NIR spectrophotometer (Perkin-Elmer, Waltham, MA, USA), over the spectral range of 200-800 nm at room temperature with a 2 nm resolution. The temperature-dependence of the field-cooled (FC) and zero-field-cooled (ZFC) magnetic susceptibilities were tested by using a superconducting quantum interference device magnetometer (SQUID, Quantum Design MPMS-XL, San Diego, CA, USA) in the temperature range from 2 to 300 K with an applied field of 0.1 T. Faraday rotation angles of the as-grown PSO single crystal along the crystallographic c-axis were measured by using the photo-extinction technique [31] at room temperature with the average values of six data for interpretation. A commercial TGG single crystal, supplied by Physcience Opto-electronic Co., Ltd. Beijing, was used as a reference material and has also been evaluated under the same test conditions.…”