TY - JOUR
T1 - Synthesis of oxycarbonate solid solutions (Tl1-xHgx)Sr2Ba2Cu2(CO3) (x=0-1.0) and superconductivity
AU - Noda, T.
AU - Ogawa, M.
AU - Akimitsu, J.
AU - Kikuchi, M.
AU - Ohshima, E.
AU - Syono, Y.
N1 - Funding Information:
The authors are grateful to E. Aoyagi and Y. Hay-asaka for technical support in electron microscopy. This work was partly supported by a Grant-in-Aid for Scientific Research on Priority Area, "Science of High-To Superconductivity" the Ministry of Education, Science and Culture, Japan.
PY - 1995/2/1
Y1 - 1995/2/1
N2 - Solid solution superconductors (Tl1-xHgx)Sr2Ba2Cu2(CO3)Oy were synthetized for x=0-1.0. The crystal structures, especially its superstructure and superconducting properties, were examined by X-ray powder diffraction, electron microscopy, resistivity and susceptibility measurements. The three different crystallographic phases have been observed; Phases I and II have an 8 times commensurate and 7.5 times incommensurate crystal structure and their propagation vector is along [010]. Phase III has a 4.7-4.5 times incommensurate structure along the [110] direction. The discontinuous change at about x=0.7-0.8 is due to the oxygen deficiency with increasing Hg content Tc also suddenly dropped from 70 to 60 K at about x=0.7-0.8.
AB - Solid solution superconductors (Tl1-xHgx)Sr2Ba2Cu2(CO3)Oy were synthetized for x=0-1.0. The crystal structures, especially its superstructure and superconducting properties, were examined by X-ray powder diffraction, electron microscopy, resistivity and susceptibility measurements. The three different crystallographic phases have been observed; Phases I and II have an 8 times commensurate and 7.5 times incommensurate crystal structure and their propagation vector is along [010]. Phase III has a 4.7-4.5 times incommensurate structure along the [110] direction. The discontinuous change at about x=0.7-0.8 is due to the oxygen deficiency with increasing Hg content Tc also suddenly dropped from 70 to 60 K at about x=0.7-0.8.
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U2 - 10.1016/0921-4534(94)02392-1
DO - 10.1016/0921-4534(94)02392-1
M3 - Article
AN - SCOPUS:0006856519
VL - 242
SP - 12
EP - 16
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -