摘要:
To provide a substrate for information recording medium having various properties, in particular higher fracture toughness, required for application of the substrate for information recording medium of the next generation such as perpendicular magnetic recording system, etc. and a material with excellent workability for such purpose. A crystallized glass substrate for information recording medium, consisting of a crystallized glass which comprises one or more selected from RAl2O4 and R2TiO4 as a main crystal phase, in which R is one or more selected from Zn, Mg and Fe, and in which the main crystal phase has a crystal grain size in a range of from 0.5 nm to 20 nm, a degree of crystallinity of 15% or less, and a specific gravity of 3.00 or less.
摘要:
Embodiments of compositions comprising materials satisfying the general formula AM1−xM′xM″yO3+y are disclosed, along with methods of making the materials and compositions. In some embodiments, M and M′ are +3 cations, at least a portion of the M cations and the M′ cations are bound to oxygen in trigonal bipyramidal coordination, and the material is chromophoric. In some embodiments, the material forms a crystal structure having a hexagonal unit cell wherein edge a has a length of 3.50-3.70 Å and edge c has a length of 10-13 Å. In other embodiments, edge a has a length of 5.5-7.0 Å. In particular embodiments, M′ is Mn, and Mn is bonded to oxygen with an apical Mn—O bond length of 1.80 Å to 1.95 Å. In some embodiments, the material is YIn1−xMnxO3, x is greater than 0.0 and less than 0.75, and the material exhibits a surprisingly intense blue color.
摘要:
A glass for laser processing that is processed through laser beam irradiation, wherein the glass for laser processing has a composition that satisfies the following relationships: 40≦M[NFO]≦70; 5≦(M[TiO2])≦45; and 5≦M[NMO]≦40, where M[NFO], M[TiO2], and M[NMO] denote the content by percentage of network forming oxides (mol %), that of TiO2 (mol %), and that of network modifying oxides (mol %), respectively. With this structure, a glass for laser processing is obtained in which not only the vicinity of the surface thereof but also the inner portion thereof can be laser-processed.
摘要:
Optical glass having a refractive index (nd) of 1.75 or greater, and an Abbe number (νd) falling within the range of 15 to 40, which is suitable for molding by precision mold press is provided. The optical glass is characterized by including B2O3+SiO2 in an amount of 10 to 70%, Bi2O3 in an amount of 5% or more and less than 25%, RO+Rn2O in an amount of 5 to 60% (wherein R represents one or more selected from a group consisting of Zn, Ba, Sr, Ca, and Mg; and Rn represents one or more selected from a group consisting of Li, Na, K, and Cs), with each component in the range expressed in oxide-based mole, and is characterized in that transparency in the visible region is high, and that the transition point (Tg) is 520° C. or lower. The optical glass is characterized by having a spectral transmittance of 70% or greater at a wavelength of 550 nm, for a thickness of 10 mm.
摘要翻译:提供折射率(nd)为1.75以上的光学玻璃,并且适合于精密模压成型的阿贝数(&ngr; d)在15〜40的范围内。 光学玻璃的特征在于,含有10〜70%的B 2 O 3 + SiO 2,5〜60%的Bi 2 O 3,5〜60%的RO + Rn 2 O(其中R表示1 或更多选自Zn,Ba,Sr,Ca和Mg; Rn表示选自Li,Na,K和Cs中的一种或多种),其中各成分在氧化物中表示 的特征在于可见区域的透明度高,转变点(Tg)为520℃以下。 光学玻璃的特征在于在550nm的波长下的光谱透射率为70%以上,厚度为10mm。
摘要:
Lead and arsenic free, and preferably gadolinium and further preferably also fluorine free, optical glasses for the application fields mapping, projection, telecommunication, optical communication engineering, mobile drive, laser technology and/or micro lens arrays have a refractive index of 1.91≦nd≦2.05, an Abbe number of 19≦νd≦25 and have a low transformation temperature, namely of less than or equal to 470° C. and preferably of less than or equal to 450° C., as well as good producability and processability and crystallization stability.
摘要:
The present invention provides novel glasses, methods of formulating glasses having a reduced stress-optic coefficient at visible wavelengths under anisotropic stress, and novel optical systems comprising a such glass.
摘要:
A low-dispersion optical glass suitable for producing a quality preform from a molten glass and suitable for precision press-molding, which is a fluorophosphate glass containing, as essential cationic components, P5+, Al3+, at least two members selected from Mg2+, Ca2+, Sr2+ and Ba2+ as divalent cationic components (R2+) and Li+ and containing, by cationic %, 10 to 45% of P5+, 5 to 30% of Al3+, 0 to 20% of Mg2+, 0 to 25% of Ca2+, 0 to 30% of Sr2+, 0 to 33% of Ba2+, 1 to 30% of Li+, 0 to 10% of Na+, 0 to 10% of K+, 0 to 5% of Y3+, and 0 to 15% of B3+, the molar ratio of the content of F− to the total content of F− and O2−, F−/(F−+O2−), being 0.25 to 0.85, the optical glass having a refractive index (Nd) of 1.40 to 1.58 and an Abbe's number (νd) of 67 to 90.
摘要:
A tellurite glass composition doped with a first lanthanide, preferably Tm, and codoped with another lanthanide oxide, e.g. Ho, is provided. The glass includes 4-12 mole % of alkalihalide XY, X being selected from the group of Li, Na, K, Rb, Cs and Fr and Y being selected from the group of F, Cl, Br and I. A preferred glass contains about 10 mole % of the alkalihalide CsCI. The addition of alkalihalide XY results in an enhanced energy transfer from the first to the second lanthanide ion, whereby the lower energy level of the first lanthanide ion is depopulated. The ratio between upper and lower energy level lifetimes for the first lanthanide ion can be reduced to a value below one, enabling efficient amplifier fibers.
摘要:
Glass for covering electrodes which can minimize a warpage of e.g. a front substrate of a plasma display device. Glass for covering electrodes, consisting essentially of, as represented by mol %, from 30 to 47% of B2O3, from 25 to 42% of SiO2, from 5 to 17% of ZnO, and from 9 to 17% of Li2O+Na2O+K2O, provided that K2O and either one or both of Li2O and Na2O are contained, and Li2O is from 0 to 2.5%, and that no PbO is contained. The glass for covering electrodes, wherein Na2O/K2O is less than 0.25, and Li2O is from 0.1 to 2.5%. The glass for covering electrodes, wherein Na2O/K2O is from 0.25 to 1, and Li2O is from 0 to 1.5%.
摘要翻译:用于覆盖电极的玻璃,其可以最小化例如玻璃的翘曲。 等离子体显示装置的前基板。 用于覆盖电极的玻璃,基本上由摩尔%表示,30〜47%的B 2 O 3 3,25〜42%的SiO 2, 2%,5至17%的ZnO和9至17%的Li 2 O + Na 2 O + K 2 / 只要K 2 O 2和Li 2 O 2和Na 2 O 2中的任一个或两者都包含,并且Li 2 0为0〜2.5%,不含有PbO。 用于覆盖电极的玻璃,其中Na 2 O / K 2 O O小于0.25,Li 2 O 2为0.1至2.5% 。 用于覆盖电极的玻璃,其中Na 2 O / K 2 O 2为0.25至1,Li 2 O为0至1.5 %。
摘要:
Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al2O3, (b) Y2O3, or (c) at least one of ZrO2 or HfO2. Embodiments of ceramics according to the present invention can be made, formed as, or converted into optical waveguides, glass beads, articles (e.g., plates), fibers, particles (e.g., abrasive particles), and thin coatings.
摘要翻译:陶瓷包括(i)Nb 2 O 5 O 5或Ta 2 O 5 5中的至少一种和(ii) (a)Al 2 O 3 3,(b)Y 2 O 3 3中的至少两个或(a) c)ZrO 2 2或HfO 2 2中的至少一种。 根据本发明的陶瓷的实施例可以由玻璃珠,制品(例如板),纤维,颗粒(例如磨料颗粒)和薄涂层制成或形成光波导。