Growth and magnetic-optical properties of Sr3Gd(BO3)3 and Sr3TbxGd1-x(BO3)3 single crystals

✍ Scribed by Lu Junye; Chen Jianzhong

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 133 KB
• Volume: 45
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.201000417

✦ Synopsis

Sr 3 Gd(BO 3 ) 3 , terbium, magneto optical properties.

Single crystals of Sr 3 Gd(BO 3 ) 3 (SGB) and Sr 3 Tb x Gd 1-x (BO 3 ) 3 (TSGB) with dimension Ø 20 mm×20 mm have been grown by Czochralski method. The grown crystals were characterized by X-ray powder diffraction analysis which showed the crystals belong to hexagonal structure with lattice parameters of a=b=1.254 nm, c=0.926 nm (SGB) and a=b=1.253 nm, c=0.925 nm (TSGB). In TSGB, x=17.7% was obtained by X-ray fluorometry which showed the segregation coefficient of Tb is closed to 1. The transmission spectrum was measured, which indicated the crystals have high transmittance in 400-1100 nm region. The Faraday rotation of single crystals at 532 nm wavelength was measured at room temperature. Finally, the Verdet constants were investigated, (SGB) V=17.9 degcm -1 T -1 and (TSGB) V=21.3 degcm -1 T -1 .