| 摘要 |
PURPOSE:To obtain a magnetooptic element material having good matching in lattice constant between a non-magnetic Nd3Ga5O12 single crystal (111) substrate and a garnet epitaxial film made of the specific compsn. consisting of Gd-Bi- Fe-Al-Ga-O12 and excellent performance by forming said film from the melt of PbO-Bi2O3-B2O3 on said substrate. CONSTITUTION:The garnet film is formed on the substrate consisting of Nd3Ga5O12 from the melt of PbO-Bi2O3-B2O3 by growing the thick film having the thickness ranging >=40mum and 300mum as shown by the compsn. formula (x= 0.9-1.3, y=0-0.08, z=0.25-0.30) by a liquid phase epitaxial growth. The magnetooptic element which has the approximate lattice constants of the substrate and the thick garnet film, obviates the defects occurring from mis-matching and has the specular boundary face is thus obtd. The element which has >=100deg/dB performance index and is suitable for an optical isolator, circulator or switch, etc. utilizing the Faraday rotating effect is thereby obtd. |
