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一般认为,Ba_2Y_1Cu_3O_(6.5+x)体系具有超导性质是与Cu~(3+)存在有关,Cu~(3+)含量(2x/3·100％)可由x值来确定。由于氧原子体积较大,难以通过进一步增大x值来提高Cu~(3+)的含量,因此它们之间的依赖关系无法进行深入的了解。本文通过Ba_2Y_1Cu_3O_(6.9)吸氟作用,在氧空位处引入体积较小且电负性大的氟原子,以便较大范围地增加Cu~(3+)的含量,这一方法为研究依赖关系提供途径。
It is generally believed that the superconductivity of Ba_2Y_1Cu_3O_ (6.5 + x) system is related to the presence of Cu 3+, and the content of Cu 3+ (2x / 3 · 100%) can be determined by the value of x. Due to the large volume of oxygen atoms, it is difficult to increase the content of Cu 3+ by further increasing the value of x, so that the relationship between them can not be further understood. In this paper, the fluorine atom with small size and large electronegativity is introduced into oxygen vacancies through fluorine absorption by Ba_2Y_1Cu_3O_ (6.9) in order to increase the content of Cu 3+ in a wide range. This method can provide way.