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Although YBa 2 Cu 3 O 7 is a well-defined chemical compound with a specific structure and stoichiometry, materials with fewer than seven oxygen atoms per formula unit are non-stoichiometric compounds. The structure of these materials depends on the oxygen content. This non-stoichiometry is denoted by the x in the chemical formula YBa 2 Cu 3 O 7 ...
Yttrium is a key ingredient in the yttrium barium copper oxide (YBa 2 Cu 3 O 7, aka 'YBCO' or '1-2-3') superconductor developed at the University of Alabama in Huntsville and the University of Houston in 1987. [49]
The uptake and loss of oxygen are reversible in YBa 2 Cu 3 O 7−x. A fully oxygenated orthorhombic YBa 2 Cu 3 O 7−x sample can be transformed into tetragonal YBa 2 Cu 3 O 6 by heating in a vacuum at temperature above 973 K (700 °C). [68] The preparation of Bi-, Tl- and Hg-based high-T c superconductors is more difficult than the YBCO ...
The barium mineral, benitoite (barium titanium silicate), occurs as a very rare blue fluorescent gemstone, and is the official state gem of California.
YBA or yba can refer to a number of things: Young British Artists, a movement of British artists in the 1980s and 1990s; Yala language, a language spoken in Ogoja, Nigeria, by ISO 639 code; Young Buddhist Association, an association of Buddhists in the U.S. Banff Airport, an airstrip near Banff, Alberta, Canada, by IATA code
An example of a tier list, subjectively ranking fruits.Higher tiers represent a more favorable ranking. The letters are inspired by grading in education, [1] especially in Japanese culture, which may include an 'S' grade.
Jotaro "JoJo" Kujo (Japanese: 空条 承太郎, Hepburn: Kūjō Jōtarō) is a fictional character in the Japanese manga series JoJo's Bizarre Adventure, written and illustrated by Hirohiko Araki.
Yba'sokug is a great beast that is said to be come to devour the world, sending depravity before him in the form of his heralds. He is depicted as a froglike creature with a great multitude of eyes. He is depicted as a froglike creature with a great multitude of eyes.