GROWTH AND CHARACTERIZATION OF HIGH-QUALITY SINGLE-CRYSTALS OF R2-XCEXCUO4-Y (R = ND, SM)

被引:101
作者
PENG, JL [1 ]
LI, ZY [1 ]
GREENE, RL [1 ]
机构
[1] IBM CORP,DIV RES,YORKTOWN HTS,NY 10598
来源
PHYSICA C | 1991年 / 177卷 / 1-3期
关键词
D O I
10.1016/0921-4534(91)90300-N
中图分类号
O59 [应用物理学];
学科分类号
摘要
High-quality single crystals of R2-xCexCuO4-y (R = Nd, Sm) were prepared over a range of Ce dopings x using CuO flux. By optimizing the growth conditions, free standing platelet single crystals as large as 10 X 10 X 0.1 mm3 were obtained reproducibly. TEM and SEM analyses verified that the crystals were single-phase with uniform Ce distribution. Both resistivity and magnetization showed sharp superconducting transitions (DELTA-T < 1 K) for x = 0.15. Because of the improved quality, the crystals are suitable for a definitive study of intrinsic properties. Details of the methods, post-growth annealing, and characterization of the crystals will be described.
引用
收藏
页码:79 / 85
页数:7
相关论文
共 22 条
  • [21] ENERGY GAPS OF ND1.85CE0.15CUO4-Y AND ND1.85TH0.15CUO4-Y DETERMINED BY FAR-INFRARED SPECTROSCOPY
    WANG, SH
    SONG, Q
    CLAYMAN, BP
    PENG, JL
    ZHANG, L
    SHELTON, RN
    [J]. PHYSICAL REVIEW LETTERS, 1990, 64 (09) : 1067 - 1070
  • [22] WANG Z, IN PRESS