TY - JOUR
T1 - Preparation of the bulk superconductor Tl2Ba2Ca3Cu4O12
AU - Kikuchi, M.
AU - Nakajima, S.
AU - Syono, Y.
AU - Hiraga, K.
AU - Oku, T.
AU - Shindo, D.
AU - Kobayashi, N.
AU - Iwasaki, H.
AU - Muto, Y.
N1 - Funding Information:
The authors are grateful to Professor K, Nagase and Mrs. R. Suzuki, College of General Education, Tohoku University, for warm encouragemenatn d technicals upport.This work was partly supported by the Grant-in-Aidf or ScientificR esearch oPnr ior-ity Areas "Mechanism of Superconductivityg"iv en by the Ministry of Education,S ciencea nd Culture, Japan.
PY - 1989/4/1
Y1 - 1989/4/1
N2 - The bulk superconductor Tl2Ba2Ca3Cu4O12 with Tc (onset) above 112 K has been prepared and structure and chemical composition were examined by X-ray powder diffraction, analytical (EDX) and high resolution electron microscopy. Unit cell dimensions for the tetragonal cell determined by the least squares method are a = 3.853 (1) A ̊, c=41.98 (3) Å. The transition temperature, Tc, of the double layered Tl system increases with the number of Cu-O layers (n) up to n = 3, while it turns down at n = 4.
AB - The bulk superconductor Tl2Ba2Ca3Cu4O12 with Tc (onset) above 112 K has been prepared and structure and chemical composition were examined by X-ray powder diffraction, analytical (EDX) and high resolution electron microscopy. Unit cell dimensions for the tetragonal cell determined by the least squares method are a = 3.853 (1) A ̊, c=41.98 (3) Å. The transition temperature, Tc, of the double layered Tl system increases with the number of Cu-O layers (n) up to n = 3, while it turns down at n = 4.
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U2 - 10.1016/0921-4534(89)90300-6
DO - 10.1016/0921-4534(89)90300-6
M3 - Article
AN - SCOPUS:0024640401
SN - 0921-4534
VL - 158
SP - 79
EP - 82
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - 1-2
ER -