Preparation and Properties of Single Crystals of the High-Tc Oxide Superconductor in the Bi-Sr-Ca-Cu-O System
Preparation and Properties of Single Crystals of the High-Tc Oxide Superconductor in the Bi-Sr-Ca-Cu-O System
复制标题
Bi-Sr-Ca-Cu-O体系高Tc氧化物超导体单晶的制备及性能
DOI：
10.1143/jjap.27.l786
复制
发表时间：
1988
影响因子：
1.5
通讯作者：
F. Okamura
中科院分区：
文献类型：
--
作者：
A. Ono;S. Sueno;F. Okamura
用坩埚下降法制备了Bi-Sr-Ca-Cu-O系超导体单晶。通过电阻率测量和单晶X射线衍射研究，检查了在各种物理条件下退火的片状晶体。超导转变温度（Tc）依赖于退火温度和氧分压。对应于退火条件，单晶X-射线衍射图案（hk 1）* 层旋进照片系统地改变在室温下。这可能与各样品的细胞参数略有差异有关。
Single crystals of the superconductor in the Bi-Sr-Ca-Cu-O system were prepared by the Bridgman method. Platy crystals annealed at various physical conditions were examined by electrical resistivity measurements and single crystal X-ray diffraction studies. The superconducting transition temperature (Tc) depended on the annealing temperatures and oxygen pressure. Corresponding to annealing conditions, single crystal X-ray diffraction patterns on (hk1)* Layer precession photographs systematically changed at room temperature. This may be related to the slight differences of the cell parameters of each specimen.