Crystal structure alpha-quartz, lithium disilicate, and lithium monosilicate; optical filters; electronic circuits; magnetic discsdoi:US7589038 B2The present invention provides an inorganic composition for use in information recording medium disc substrate and such, having an excellent surface property ...
The history of the use of alpha quartz, SiO/sub 2/, one of the nine forms of silica is sketched, and its structure and crystallography are described. Piezoelectricity, the most important property of quartz from an electrical standpoint, is explained. Processing of quartz crystals to ensure prop...
Crystal chemistry of alpha-quartz is discussed in relation to the nature, concentration and distribution of the common impurities. Two schemes for incorporation of impurities in the host structure, viz. , the charge compensation model for untwinned natural quartz, and the broken-bond model for ...
Base Chakra:Bastnasite, Bismuth, Bixbite, Black Agate, Black Ammonite, Black Andradite Garnet, Black Calcite, Black Coral, Black Diopside, Black Kyanite, Black Moonstone, Black Morella Smokey Quartz, Black Obsidian, Black Onyx, Black Quartz, Black Spinel, Black Tourmaline, Blue Jadeite, Black M...
This chapter presents the numerical data and the simulated powder patterns of Alpha Quartz material with 39.49° as 2θ value. Two compositions, which are expressed in terms of the full unit cell content, are provided. The chemical composition is the nominal material composition provided in the ...
Experimental/ borosilicate glasses dielectric losses dielectric resonance glass ceramics permittivity quartz sintering zinc compounds/ Zn silicate-alpha-quartz-borosilicate glass composite high frequency ceramic multilayer parts low-temperature glass ceramic sintering system dielectric constant low dissipation factor ...
Recent experiments [Kruger and Jeanloz, Science 249, 647 (1990)] have shown that the pressure-induced amorphous form of AlPOreverts to its original ``single-crystal'' form on release of pressure. Here we present the results of a Brillouin scattering study of the sister compound α-quartz, ...
Other structures are constructed out of traditional materials, such as chalcedonic quartz, which does not preserve nearly so well. These structures employ complex geometric shapes that appear to operate in dimensions higher than human understanding can comprehend.[21] The Forerunners also decorated the...
This is clear quartz crystal that has had the surfaces bonded with a mixture of vaporized metals such as Gold, Indium, Niobium and other trace minerals. Tanzan Aura Quartz This is an artificial process and many people dislike how this is done and will not use them. Yet I feel that these...
Potato amylopectin with phosphate groups was immobilized on a quartz crystal microbalance with dissipation monitoring (QCMD) using the attractive interacti... Tomoko,Sasaki,Timothy,... - 《Journal of Agricultural & Food Chemistry》 被引量: 31发表: 2008年 The effect of process conditions on the a...