TY - JOUR
T1 - Crystal growth of Bi2(Sr,Nd/Sm)2CuOy and their superconductivity
AU - Kikuchi, M.
AU - Itou, M.
AU - Faqir, H.
AU - Atou, T.
AU - Murakami, Y.
AU - Syono, Y.
N1 - Funding Information:
This work was partly supported by the Laboratory for Developmental Research of Advanced Materials, Institute for Materials Research, Tohoku University. SQUID measurements were performed at the Center for Low Temperature Science, Tohoku University.
PY - 2001/7/2
Y1 - 2001/7/2
N2 - Bi2Sr2-xLnxCuOy (Ln=Nd, Sm) was synthesized in the range of x=0.2-0.6 and a single phase was obtained in the range of x=0.3-0.6. A diamagnetic signal was observed for x=0.2-0.6 and the maximum Tc of 23 K for Nd3+ and 17 K for Sm3+ was obtained around x=0.5 and 0.4, respectively. Single crystals of Bi2Sr2-xLnxCuOy (Ln = Nd, Sm) were successfully grown by the self-flux method from the melt of stoichiometric composition. DTA was used to determine the thermal cycle. The as-grown crystal from the melt of Bi2Sr1.6Nd0.4CuOy was Bi2Sr1.6Nd0.4CuOy with dimensions over 2mm and exhibited superconductivity at Tc∼20K. The crystal growth of Bi2Sr2-xSmxCuOy was examined for the stoichiometric melt of Bi2Sr1.5Sm0.5CuOy. However, we could not observe single crystal with 2 2 0 1 structure. The crystal had 2 2 1 2 structure and showed no superconductivity.
AB - Bi2Sr2-xLnxCuOy (Ln=Nd, Sm) was synthesized in the range of x=0.2-0.6 and a single phase was obtained in the range of x=0.3-0.6. A diamagnetic signal was observed for x=0.2-0.6 and the maximum Tc of 23 K for Nd3+ and 17 K for Sm3+ was obtained around x=0.5 and 0.4, respectively. Single crystals of Bi2Sr2-xLnxCuOy (Ln = Nd, Sm) were successfully grown by the self-flux method from the melt of stoichiometric composition. DTA was used to determine the thermal cycle. The as-grown crystal from the melt of Bi2Sr1.6Nd0.4CuOy was Bi2Sr1.6Nd0.4CuOy with dimensions over 2mm and exhibited superconductivity at Tc∼20K. The crystal growth of Bi2Sr2-xSmxCuOy was examined for the stoichiometric melt of Bi2Sr1.5Sm0.5CuOy. However, we could not observe single crystal with 2 2 0 1 structure. The crystal had 2 2 1 2 structure and showed no superconductivity.
UR - https://www.scopus.com/pages/publications/0035399409
UR - https://www.scopus.com/pages/publications/0035399409#tab=citedBy
U2 - 10.1016/S0022-0248(01)01188-5
DO - 10.1016/S0022-0248(01)01188-5
M3 - Article
AN - SCOPUS:0035399409
SN - 0022-0248
VL - 229
SP - 396
EP - 400
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 1
ER -