Synthesis of superconducting pyrochlore RbOs2O6
Synthesis of superconducting pyrochlore RbOs2O6
复制标题
超导烧绿石RbOs2O6的合成
DOI：
10.1088/0953-2048/17/10/015
复制
发表时间：
2004
影响因子：
3.6
通讯作者：
J. Karpiński
中科院分区：
文献类型：
--
作者：
S. Kazakov;Nikolai Zhigadlo;M. Bruhwiler;B. Batlogg;J. Karpiński
RbOs2O6，第三种超导烧绿石氧化物（迄今为止已知），是通过封装和高压技术合成的。对所制备的样品进行适当的后化学处理使我们能够消除杂质相。在磁化强度和比热测量中观察到 Tc = 6.4 K 的体超导性。发现两种制备方法的 RbOs2O6 的转变温度相同。结构研究表明，Rb原子占据烧绿石晶格中的8b位，晶格参数为10.1137(1) A。
RbOs2O6, the third superconducting pyrochlore oxide (known so far), has been synthesized by encapsulation and by high pressure techniques. Suitable post chemical treatment of the as-prepared sample allowed us to eliminate the impurity phases. Bulk superconductivity with Tc = 6.4 K was observed in magnetization and specific heat measurements. The transition temperature of RbOs2O6 was found to be the same for both preparation methods. Structural investigations showed that Rb atoms occupy the 8b site in the pyrochlore lattice with a lattice parameter of 10.1137(1) A.