PARAMAGNETIC GARNET-TYPE TRANSPARENT CERAMIC, MAGNETO-OPTICAL MATERIAL, AND MAGNETO-OPTICAL DEVICE

Provided is a paramagnetic garnet-type transparent ceramic which is truly transparent and has high optical homogeneity, the transparent ceramic being a sintered object of a composite oxide represented by formula (1), containing Si02 as a sintering aid in an amount larger than 0 mass% but not larger...

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Bibliographische Detailangaben
Hauptverfasser:	IKARI, Masanori, MATSUMOTO, Takuto
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING LIME, MAGNESIA METALLURGY NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS REFRACTORIES SLAG TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	Provided is a paramagnetic garnet-type transparent ceramic which is truly transparent and has high optical homogeneity, the transparent ceramic being a sintered object of a composite oxide represented by formula (1), containing Si02 as a sintering aid in an amount larger than 0 mass% but not larger than 0.1 mass%, and having an average sinter-grain diameter of 5 µm or larger. The transparent ceramic has a total light transmittance of 84.0% or greater and a forward scatter of 0.5% or less at an optical path length of 25 mm and a wavelength of 1,064 nm and has a total light transmittance of 84.0% or greater and a forward scatter of 0.5% or less at an optical path length of 25 mm and a wavelength of 1,300 nm. Formula (1): (Tb1-x-yYxScy)3(Al1-zScz)5O12(In the formula, 0.05 ≤ x < 0.4, 0 ≤ y < 0.004, 0.6 ≤ 1-x-y < 0.95, 0 ≤ z < 0.004, and 0.001 < y+z < 0.005.)