| 摘要 |
An oxide is provided that contains the oxide represented by Formula (I) as the main component thereof, that has a Verdet constant at a wavelength of 1.06μm of at least 0.18 min/(Oe�cm), and that has a transmittance at a wavelength of 1.06μm and for an optical length of 3 mm of at least 70%, (TbxR1-x)2O3 (I) wherein x is 0.4≰x≰1.0; R includes at least one element selected from the group consisting of scandium, yttrium, lanthanum, europium, gadolinium, ytterbium, holmium and lutetium. |
