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Citation: Zhou Dingyun, Zhu Wenjie*, Chen Fengxiang, Li Neng, Lin Bingxiong, Tang Youqi, Chen Kaixuan, Lu Guo. PREPARATIVE AND STRUCTURAL STUDIES ON SUPERCONDUCTING PHASE TLI₂Ca₃Ba₂Cu₄O₁₂[J]. Acta Physico-Chimica Sinica, ;1989, 5(03): 260-263. doi: 10.3866/PKU.WHXB19890302 shu

PREPARATIVE AND STRUCTURAL STUDIES ON SUPERCONDUCTING PHASE TLI₂Ca₃Ba₂Cu₄O₁₂

1.

Laboratory for Applied Physical Chemistry Institute of Physical Chemistry Peking University

Physics Department; Peking University

Received Date: 4 February 1989
Available Online: 15 June 1989

The superconducting phase Tl_2Ca_3Ba_2Cu_40_(12), with Tc=108K and Meissner effect 66%, has been prepared. The unit cell is body-centred tetra nal, space group D_(4h)~(17)/mmm, lattice parameters a=0.3854(1)nm, c=4.2070(11)nm. In crystal two structural units{(O_2Cu)(BaO)(TlO_2Tl)(OBa)(CuO_2)}are separated by two CaCuO_2 slabs. Also, the relation between c axial increment and Tc in double Tl-O layer system is discussed.
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PREPARATIVE AND STRUCTURAL STUDIES ON SUPERCONDUCTING PHASE TLI₂Ca₃Ba₂Cu₄O₁₂