Crystal Structures of YBa2Cu3-δAδO9-γ (A=Ni, Zn and Co)
Crystal Structures of YBa2Cu3-δAδO9-γ (A=Ni, Zn and Co)
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YBa2Cu3-δAδO9-γ (A=Ni、Zn 和 Co) 的晶体结构
DOI：
10.1143/jjap.27.l354
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
M. Hirabayashi
中科院分区：
文献类型：
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作者：
T. Kajitani;K. Kusaba;M. Kikuchi;Y. Syono;M. Hirabayashi
利用 X 射线和飞行时间型 (TOF) 中子衍射仪对斜方晶系 YBa2Cu3O6.94、YBa2Cu2.8Ni0.2O6.85 和 YBa2Cu2.7Zn0.3O6.75 和四方晶系 YBa2Cu2CoO7.16 进行了结构研究，以确定掺杂原子 Ni、Zn 和 Ni 的位置。 Co，1-2-3（Y/Ba/Cu）氧化物。镍原子仅占据 Cu2 位点 2q(00z)，z=0.36。锌原子占据Cu1位点1a(000)和Cu2位点，占据率为0.20(5)和0.05(2)。在四方晶系YBa2Cu2CoO7.16中，在Cu1和Cu2位点上均发现了钴原子，其占据量分别为0.83(2)和0.08(1)。
A structural study of orthorhombic YBa2Cu3O6.94, YBa2Cu2.8Ni0.2O6.85 and YBa2Cu2.7Zn0.3O6.75, and tetragonal YBa2Cu2CoO7.16 by means of X-ray and time-of-flight type (TOF) neutron diffractometers was carried out to determine the locations of the dopant atoms, Ni, Zn and Co, in the 1-2-3 (Y/Ba/Cu) oxide. The nickel atoms occupy only the Cu2 site 2q(00z) with z=0.36. The zinc atoms occupy the Cu1 site 1a(000) and the Cu2 site with occupancies of 0.20(5) and 0.05(2). In the tetragonal YBa2Cu2CoO7.16, cobalt atoms were found at both the Cu1 and Cu2 sites with occupancies of 0.83(2) and 0.08(1).